How to set up BMV Battery Monitor for lead and lithium batteries

[@michaelo6003]

If you stick with him, and pay close attention, the information is actually very important and helpful. What would have been nice is to see some BMV screens as he was going through the settings.

[@Maktokind]

Thanks for the content. Had to listen to it a few times to understand such a complex and important part of the system . Some visuals would. Have made it so much easier especially as I usually screenshot them

[@Bob9999]

I believe it would benefit Victron Energy greatly if they provided proper videos of the installation and the required app settings for ALL the equipment they manufacture.

[@johannesboonstra6917]

? There are many video on this , please search for Victron in KZbin and find one of many

[@RIVNUTBrainCaseSugaryGoodness]

settings recommended for BVM for LITHIUM LIFPO4. ok so he says for lithium 14.2v is full charge for a 12v battery. so for the charged voltage setting would be 14.2v minus 0.2v giving 14v. CHARGED VOLTAGE set to 14V. (12v) 28v(24v) 56v(48v) DISCHARGE FLOOR set at between 10% and 50% i use 20% TAIL CURRENT set to 5%. CHARGED DETECTION TIME set to 5 minutes. PEUKERT EXPONENT set to 1.05. CHARGE EFFICIENCY FACTOR set to 99% Hope that helps

[@SamCarleton]

Thank you for all,the info, I’ll have to watch it a few more times to get it all right. If you ever update this video, if you could provide some visuals, I think it would make it easier to follow along.

[@luminousveiws]

All the VE videos I've seen have this problem. A talking head isn't much better than reading instructions, and sometimes worse,

[@boaterderek]

It would be so helpful if they came up with some type of chart or system where you could enter your battery's capacity/type and then it would tell you what numbers to put into the system. It seems like the majority of questions are related to that.

[@johannesboonstra6917]

yes I understand, but as batteries tend to be different the settings are not equal per chemistry/type/model.

[@RIVNUTBrainCaseSugaryGoodness]

Johannes starts talking about Lithium at 14:10

[@nickgood8166]

Solid stuff! Will be watching this multiple times.

[@bobjary9382]

Full of all the info im looking for but why no graphics ???? Im going through the transcript but its so laborious , pictures please

[@johannesboonstra6917]

Pictures of what? a charge current dropping down and a charge voltage remains high?

[@bobjary9382]

@@johannesboonstra6917 Yeah why not? . If this guy was genuinely trying to teach what he talks about for such a long time he would have diagrams or pictures Imagine explaining something relatively simple like newtonian laws of motion just by talking ? Youd get confused unless familiar with the subject , with pictures it would be so much easier

[@deanervik]

Fantastic. Thank you! More on just lithium charging alone would be welcome.

[@johannesboonstra6917]

Could be that's coming !

[@TheHulioG]

Thanks for this in-depth explanation, great video!

[@waynehobbs5175]

Great info. Would really like this in writing. And or subtitles as I cannot pickup all of this gentlemans words. I want to.

[@johannesboonstra6917]

sorry for the dialect....English isn't my native as you heard ...

[@VictronEnergyBV]

Subtitles is available in 7 different languages.

[@yellowglider]

I second this question. I really appreciate the presentation, but I’d like to have a transcript so that I’m sure I’m understanding all of it. And I’d rather have it as a file, the subtitles are nice but are not usable on the field...

[@johannesboonstra6917]

@@yellowglider as most is done without having a script , this is quite hard for me to do.

[@yellowglider]

@@johannesboonstra6917 , once again pls do not take this as a negative comment... But it would really help to have a transcript! ;-) (p.s.: I'm not a mother-tongue myself, so I know how hard it is! ;-) )

[@sailingaphrodite4189]

Has anybody pulled the main points together? I've really struggled to follow this and I'm a native English speaker with a first degree in electronics. Some well written documentation, and I've read the manual a heap of times, on the points covered would really, really help.

[@makaveli7771]

cheers, I have just posted this question on victron community 2 days ago. I will link this video as an answer :)

[@jhe4982]

Dear Johannes, you state that in the original full charged state of a lead acid battery the positive plate will be covered with lead and the negative plate will be coverd with leaddioxide. In my opinion this is the other way around, In the fully-charged state, the negative plate consists of lead, and the positive plate is lead dioxide. mvg Jurgen

[@johannesboonstra6917]

Yes correct, in fact both are plates of lead although the positive is covered with lead-oxide and the negative is pure lead.

[@Lkabouter]

Good video. But can I find this complete story in a written pdf document somewhere ?

[@johannesboonstra6917]

thanks, I am afraid its not on paper available

[@lecramred4453]

Great vid, but I suggest to use Power point or so in addition to visualize. Now the talk goes fast and it is cluttered.

[@TheEpicPUG]

Very helpful explanation, Thanks!

[@georgek719]

Why doesn't Victron have a customer service/tech rep call-in service?

[@johannesboonstra6917]

I understand the question but the answers is quite simple, Victron has about 100 employers and the numbers sold of only the BMV for example is 100K plus yearly. This means that if even 1% of the users would call the delay would be enormous. So all technical information is found online in write, video and presentations. Also of course, the network of dealers is there to help. They helped you selecting the right device for your system and can also advise you to set it up. In you case, what setting isn't clear to you?

[@Chris.Tian.]

Great explanation!

[@johnmuntanga9455]

Many thanks for this well explained videao. I just installed a Smart Shunt on my offgrid system and followed your recommendation to use the absorption Voltage as the "Charged Voltage". On my MPPT, my float voltage is 27.4V, absorption Voltage 28.6V. I have set my Charged Voltage at 28.2V, Discharge floor at 80% as I only use 15% of of 220AH battery. I have set the Charge efficiency at 75% and charge detection time to 3 minutes and the tail current to 5.5% (12.1A). When my battery was full, I the current reamined at 1.5A, Could my tail current be set too high? Also, the shunt nuver sychronised automatically? Could there be something wrong with my settings? If yes, what should I adjust my settings to?

[@ABOSfilm]

Interesting Info, to understand the BMV

[@MarkPingel]

This is awesome. Such great info. Keep up the good videos!

[@qualiamaxwell6305]

Keep them comming

[@johnbee1107]

Do you guys at Victron see a chance that "Low SOC relay" and "Discharge floor" could be set independently in BMV settings? I use the relay of the BMV to stop alternator charging of my Lithium battery at 90% SOC and restart alternator charging below 85% SOC. As discharge floor is automatically adjusted to 85% SOC in this case, the "Time remaining" display becomes useless.

[@johannesboonstra6917]

Well, the time remaining is then the time you start the generator isn't it? I am not sure you also have the Ve Bus SOC overwritten by the BMV, in case you did you could start/stop from there on any SOC level you want.

[@johnbee1107]

@@johannesboonstra6917 Actually I do not start the generator with the BMV relay. I just use the relay to prevent the alternator of the propulsion engine from charging the lithium battery when it is already almost full. So I want to set "discharge floor" to 10% to have a reasonable "time remaining" reading. But "low SOC relay" needs to be set much higher for my application. I do not see a reason why both settings cannot be set to different values. When I set "low SOC relay" to 85% under relay tab in Victron connect, the "discharge floor" under battery tab is automatically changed to also 85%. Is there a chance that this will be corrected in a future firmware update?

[@davidl1338]

@@johnbee1107 For what it is worth, I have exactly the same opinion :) On one installation, I use the BMV relay to control an electric water heater, enabling it when the battery is above a high SOC - 90% - to make best use of excess solar harvesting which would otherwise be wasted. On another installation, I use the relay to disable the inverter supply to a Water Heater and Fridge so those two items switch to Gas instead when the SOC drops below 80%, in order to reserve remaining electricity for systems that are electric only (again this is to maximize solar harvesting benefit). In both cases it makes the Discharge floor and time remaining totally inaccurate/irrelevant.

[@astoddard1967]

Looking for settings for my system. 400ah 24v lifepo4 charging with Victron 150/60. Victron defaults to 28.4v absorption and 27v float. What should I set the "charged voltage" to? There's conflicting information online, in the manual, etc.

[@johannesboonstra6917]

when the absorption on the MPPT is set at 28,4, the Sync voltage could be 28.1-28.1Vdc

[@astoddard1967]

@@johannesboonstra6917 thank you!

[@eddyl.8478]

I have a MP-II connected to a LiFeOO4 battery pack with BMS which has no connection to the MP-II. I use ESS in ‘Optimized(without Battery Life)’ mode. With the help of your good explanation in this video, I set my MP-II as the battery monitor with 90% as the SoC when bulk charging stops and 10% as the SoC limit in ESS. I therefore only use 80% of the battery capacity in a hope to keep its life longer. It works fine but I found that the system somehow forced the SoC to 100% when it changes from absorption to float. This messed up my SoC calculation. To prevent this from happening, I set the absorption time to 23 hrs so the system would not change to float state before the next daily 4-hour charge during mid-night low-rate period. May I know the possible causes of the force change to 100% at float? How can it be prevented? I can’t find it mentioned in any manual or setting.

[@johannesboonstra6917]

When the charger goes to float, your batteries are full I suppose, or not? Normally the lithium batteries need to be brought up to a specific voltage to have them fully charged, the absorption isn't actually absorption but only a period of high voltage to allow the balancing work the cells.

[@eddyl.8478]

@Johannes Boonstra , thanks for the reply. In my case, the MP-II goes to float just because it is at the end of the absorption (not because the battery is full) and the duration of the absorption is set my me. I defined it as 90% SoC at the end of Bulk charging. I originally set the absorption to 1 hr (which is the minimum that I can set) and I found that the SoC went up from 90% to around 93% at the end of that 1 hr absorption. After the absorption, the system changed to Float and also changed the SoC from 93% to 100%! Such sudden change of SoC to 100% is not what I wanted. I therefore set the absorption time to 23 hours so that it would not change to Float during the scheduled charging period. I set the system to change to 90% SoC at the end of the Bulk and it is working fine. May I know how I can stop the system from changing the SoC to 100% when it changes to Float?

[@excavatorsUK]

Really good explanation, thanks! Brings together various strands from the manual and elsewhere and helped me make sense of it all. One question came to mind regarding when an Orion is in use: say there are a number of short driving periods between which the engine is switched off (and therefore so is the Orion) does the same apply as for charged voltage and tail current on solar? Ie the charger going off at any point in the cycle is like a cloud passed over? Assuming absorption should be 14.4V for a lead battery the charged voltage set at 14.2? If so is there any issue when a proper float at 13.8V happens on a long drive or when a mains charge can be done?

[@johannesboonstra6917]

the battery monitor will sync when the voltage is high enough combined with a low current, so if that's happening with an Orion its the same, as then also the battery is full.

[@christianlewisphotography6910]

I want to replace my standard caravan charger in my campervan. It charges and supplies 12v power. Only thing is the 85 amp hour AGM leisure battery is in the engine bay and the battery charger is in the living area at about 3m to 4m of 29amp sheaved automotive cable. WOULD THE VICTRON BLUESMART IP22 12V 15AMP 3 OUTPUT BATTERY CHARGER BE OK AS A REPLACEMENT?

[@johannesboonstra6917]

Yes , although you didn't state the size of the battery, this should be ok up to 150-200Ah

[@christianlewisphotography6910]

@@johannesboonstra6917 85 amp hour AGM

[@PierreBlouin]

Couple questions. I have a Lithium LiPO4 900AmpHr @ 24V battery bank. Have a BMV-712 and a MultiPlus, generator and have solar with 3 Victron MPPTs. Q1 - I am struggling with where to set the "Charged Voltage" Setting in my BMV-712. My battery manufacturer tells me Bulk Voltage (same as Absorption) should be at 29.2V, and Float be at 27.6V. I have set the charged voltage at 27.2V (based on prior info gathered) but in this video (@14:37min) Johannes mentions I should set it much higher at 0.4V below the Bulk Voltage (which is same as Absorption), so this means set it at 28.8V. That's a huge difference, is that correct, I should set "Charged Voltage" at 28.8V in my situation, with Float V at 27.6. almost does not make sense, but seeking advice. Q2 - When does the MP charger move to Float, what setting/criteria actually controls the MP charger to go to Float? Is it SoC @100%? Voltage level reached the "Charged Voltage" setting? other? thanks

[@johannesboonstra6917]

1 Vc should normally be based on the float (just below this) but with solar systems just below Abs. 2 float is entered after the absorption period is done. this should be 100% doc but that's not controlling the state

[@sagitter140]

What if I decide to set a Life Saving profile setting for my Lifepo4 Victron 200ah in my PV MPPT for the time my RV stays parked for 1 month but still need electricity in there ? Now i've created a profile for this with Absorption 13.6 Float 13.4...I don't want the battery to sit at high voltage... but what about the absorption time ? ... what would be the better configuration to have in the victron mmpt for this period of time?

[@johannesboonstra6917]

For lithium the absorption time is use to balance the cells, when the batterie isn't used there isn't unbalance either. So absorption isn't needed then. PS the "high" voltage of 14,4 or higher might limited the lifespan when always applied, when the float is 13,3 (my advise) your are safe to have the battery sit at that level.

[@73smoo]

I have a BMV 712 in use for two years in my van and it worked flawlessly. Until a couple of weeks ago. Then suddenly it just showed 0.02V for the starter battery and 0.03V for the leisure battery. Both batteries fully charged and everything working. All other values which the BMV shows are correct. I resetted the device, checked all cables (both positive red cables connected to the shunt measure 12.xV) -but still the same problem. Is it kaputt just after warranty time? What else can I check?

[@johannesboonstra6917]

Sorry to hear this! its is most likely a warranty issue as this seems a hardware failure. Sure there wasn't a (too) high voltage there? mostly these are known to be pretty robust. Please ask the dealer for further support.

[@73smoo]

Finally I found the cause of the problem. The plug in the BMV was loose. Sounds easy to find but it was not so that the BMV didn't show anything anymore, then I would have looked for it at first. But it was so that the BMV was working, it was under voltage, there were just some values wrong, therefore I didn't think the plug could be the problem.

[@simonphillips8636]

Awesome so I only discharge my victron agms to 80 % ie 20 % dod . What should I set my efficiency at ? Also

[@johannesboonstra6917]

then the efficiency is about 75%

[@sikkepossu]

What would be a recommended value for absorption voltage as the battery manufacturer states for the cyclic use 14,6 - 14,8V charging voltage and for the stand by use 13,6-13,8V. Should I use the cyclic values here? And what about the float voltage?

[@johannesboonstra6917]

as low as possible, that's better for the lifespan. so 14.6Vdc /13.6 Vdc

[@reginaldpotts2037]

04:20 "gassing should be prevented at all times" this may be true with AGM or Gel but with FLA you MUST allow them to gas as this is part of the absorption cycle. Without this gassing the plates will sulfate over time and fail prematurely which is exactly what happens with most lead acid batteries that fail early. If you are not putting distilled water in your FLA batteries every month then you are under charging them!

[@johannesboonstra6917]

What most is used is the VRLA type, so there is gassing but this will not open te valves normally, for flooded (limited) gassing is OK to mix the fluids and have the charge process be optimal

[@lawrencecraig]

Great video, @Johannes, thank you. I have an academic question based on my current situation and observations. I have a SmartShunt connected to MPPTs and Bosch 500 aH Lead acid batteries that are fairly new. Peukert is 1.3, Charge Efficiency is 75%, I have set capacity to 90% of labelled capacity. State of charge starts the day at 85% (75aH consumed since full/float). It will roughly increase in a fairly linear way throughout the day due to charge from MPPTs. Absorption phase doesn't start till SoC is 95-98%. This suggests that SoC on the controller is increasing too rapidly or not declining enough overnight. What parameters should I be looking at to adjust this? As you state in your video, the charge efficiency is variable depending on the SoC of the battery yet this is a fixed value, is this possibly the issue? I have tried adjusting to extremes yet every time my SoC is >95% when absorption starts which can be misleading. Thanks a lot.

[@johannesboonstra6917]

soc is increasing to rapid? Why have the Ah set lower then they are ? the absorption is based on voltage, so if you would have entered the AH correct the absorption would start at 80-85 which would be correct

[@lawrencecraig]

@@johannesboonstra6917 The battery bank is a Bosch L5075 Lead Acid (4 x 140aH) and been through about 100-200 cycles with DoD not dropping below 60%. With Absorption starting when the SoC is at >95%, I can only assume that the capacity of the bank is much less than I think they are.

[@srqutube]

Our new system includes 600Ah of Battleborn lithium, a 1200w of Solar, a 250/85 SmartSolar MPPT, a 3000w MultiPlus and a BMV-712. Please clarify settings to ensure the SOC calculation from the BMV algorithm overrides any other SOC calculation. Thanks.

[@johannesboonstra6917]

Just fill in the battle born "charged" values in the BMV. To override the Multi SOC reading there is also a Cerbo or other VenusOS device needed.

[@srqutube]

@@johannesboonstra6917 We do have CerboGX with color display. Forgot to include it in my 1st post. How do I override SOC. Thanks

[@johannesboonstra6917]

@@srqutube in the Cerbo menu under system settings you van select which SOC source to use and if you want to overwrite the Ve bus soc So select the BMV as source , and choose overwrite

[@KotoriOnWheels]

I'm so lost. This stuff is like another language to me. I have lithium (3 of them each 100ah) and when I set my Peukert from 1.25 (default) to 1.05, as he says to do in video, the SOC dropped 20% instantly. I am now awaiting batteries to fully charge again to "synchronize"? I am not sure I am doing this right.

[@johannesboonstra6917]

After you make a setting change the sync is needed to get all true as far as readout again. so just charge the battery full and want for a full charge/sync

[@johnfitzgerald963]

I have a question about batteries - I am upgrading my camping trailer to lithium using victron smart AC/DC charger, MPPT smart solar charger and Orion Tr 12-12-30 for alternator input. Is it best to have 2 x 100AH battery OR 1 x 200AH battery?

[@johannesboonstra6917]

To reduce the change of inmablance between the cell (for wich there is a balancing circuit of course) having larger batteries is preferred over smaller/higher number.

[@Rickydbaby]

Trying to better understand tail current setting on the bmv shunt. It says to use 4% my battery is a 200ah batt. 4% is 8amps. My 200w solar charger which is my primary charger bulk charges the batt at 8~9amps. Seems like I would want a smaller tail current around 1-2amps or less with this type of charging. That would be .5% - 1% does this seem accurate?

[@Rickydbaby]

Forgot to mention. Lithium.

[@johannesboonstra6917]

The tail current is the current which will flow when the battery is full/under charge voltage. So that's determined by the battery. This value is more needed to be set for lead acid batteries. Lithium is full when the end voltage is reached

[@nacholeon8392]

Un vídeo muy necesario para entender como funciona el BMV. Tengo una duda. Cuando en lugar del BMV se utiliza el medidor de batería del V.E. Bus System de un Multiplus. ¿Hay que configurar la capacidad de batería en C20 también? Gracias

[@nacholeon8392]

A very necessary video to understand how the BMV works. I have a doubt. When instead of the BMV the battery meter you use the V.E. Bus System of a Multiplus. Do you have to set the battery capacity on C20 as well? Thank you

[@johannesboonstra6917]

@@nacholeon8392 Yes, sorry if that wasn't mentioned clearly by me, always use the C20 capacity of the battery capacity

[@nacholeon8392]

@@johannesboonstra6917 Thank you. I think that at some point in the video you do indicate the capacity in C20. But what was not clear to me is whether in the multiplus configuration you also had to put the value of C20. Now it is clear to me. Thanks again. We learn a lot from your videos. As a suggestion, it would have been good to have images of the BMV while you were commenting on the configuration 😉😁

[@jamesm361]

I have a new SmartShunt IP65 installed and synchronized to my Dakota Li 12v 100ah battery after a full charge. The shunt is reporting the current voltage at 13.3 (verified with a multimeter). In the VictronConnect App, my Charged Voltage (per the manufacturer) is 13.2 volts, with a discharge floor of 10%, tail current set to 2%, and the peukert set to 1.05. I am correctly wired. While under load, the app appears to report correctly. However, after a short period of time off load, the app will reset the SOC back to 100% and the ah consumed to 0. This is a new battery. It's being used with a trolling motor, and after a recent trip i used 7ah. While the main screen reads 100% and no ah consumed, the history does show that i've been using ah's. Is it possible that the relaxation period where the voltage is boosted responsible for resetting the SOC and ah consumed?

[@johannesboonstra6917]

13.2 Vdc as charge voltage might be too low, I guess you charge 14-14.4V ?

[@haidan84]

Seriously? You are making a video here. A talking head is.... Just that that why not some visual aids?

[@johannesboonstra6917]

Well its about the information to understand why/how something works, mainly for technical users. beside this there are many other visual instructions to set up a battery monitor. I hope you did get your battery monitor set up correctly. perhaps otherwise your installer might help you further.

[@Altenurgy]

Thank you for this. I once found an online manual from Victron that detailed the settings for LifePo4 but cannot find it again. Where might I find that? Thank you.

[@johannesboonstra6917]

thats in the manual of the battery monitor.

[@richeastmain4031]

Wow, I thought I knew a little about this stuff but now I’m really lost. I tried to watch it again but I think I passed out at around 3 minutes.

[@johannesboonstra6917]

i am sorry, Are you saying its explained too complicated?

[@TonyLing]

Very illuminating

[@fabriziobertoldo7653]

Dear Johannes, I have installed the Victron smartshunt in my motorhome. I have two 95ah agm batteries and three charging sources: from the electric grid (IUoU 18A abs. 14,3v and fl. 13.8v), from a solar regulator (IUoU about 18A, abs. 14,7v and fl. 13,7v) and a battery to battery chargher (booster) (IUoU 25A max limited current, abs.14.7v and fl.13.7v). How should I correctly set the smart shunt parameters so that the readings are true considering the three charging modes? I want to find the best compromise of these settings for my setup Thanks very much in advance. Fabrizio

[@johannesboonstra6917]

Good question, of course you do realize that the battery is the criterium all charge settings should be based one, So if you have three various settings at least two are not 100% correct. If you feel the battery get ill with the lowest abs voltage, that's the settings to use.

[@fabriziobertoldo7653]

@@johannesboonstra6917 ok, thanks. At the moment I set: capacity 190 ah c20, VC 14.2 (I think better 14.1), discharge fl. 50%, Tail current 4.5%, CDT 5 min, charge efficency factor 83%. What do you think about these?

[@fc436]

@@fabriziobertoldo7653 ciao parli italiano? Volevo dirti la mia sulla tail current dello smartshuunt... Secondo me è esageratamente alta. Una batteria al pb al 100% assorbe meno del. 2% a 14.4v e meno di 1% a 13.8v. In realtà i test FIAMM dicono che una Agm completamente carica davvero, assorbe solo 0.3mA per ah di capacità a 13.8v. Significa che una agm da 100 ah realmente al 100% assorbe solo 0.03 A a 13.8v. Quindi secondo me, settare la tail current al 4 o 4.5% causa una sincronizzazione molto anticipata. Tanto più se la tensione di sincronizzazione impostata è bassa (es 13.5v), ma anche se è impostata vicino alla tensione di assorbimento (d es 14.2v). Io vivo nel camper esclusivamente con solare da 300 watt e una batteria agm victronenergy da 110ah. Ho impostato la tail current a 0.8% e la tensione di sincronizzazione a 13.5v. E tempo 6 minuti. Questo fa si che mi sincronizza sempre e solo dopo che l assorbimento è terminato. Cioè dopo essere entrato in floating. E dopo un pó di floating. Infatti alla fine. Dell assorbimento una batteria non è al 100% ma piuttosto al 97%. In realtà ci vogliono parecchie ore di floating per completare l ultimo scalino. La prova che queste impostazioni vanno bene è che quando lo schunt ogni giorno sincronizza il 100%, il salto che vedo è solo da 98% a 100%. Impostando una tail current alta, si vedrà un salto più grande, che non è proprio corretto... Ciao

[@fabriziobertoldo7653]

@@fc436 Grazie. Tenendo conto che carico con 3 fonti, volevo trovare il settaggio che sia una buona via di mezzo. Cosa mi suggeriresti per tutti i vari parametri?

[@fc436]

@@fabriziobertoldo7653 ciao... Guarda non conosco così bene la fonte 220. Quello che posso dirti è che con il solare, io ho degli ottimi risultati di precisione impostando una corrente di coda di 0.8%, e una tensione di sincronizzazione di 13.5v e un tempo di 5 minuti. Con queste impostazioni la sincronizzazione avverrà SEMPRE DOPO CHE LA FASE ASSORBIMENTO È STATA TERMINATA. UNA MEZZ ORETTA DOPO CHE È INIZIATA IL MANTENIMENTO. Credo che puoi ottenere lo stesso risultato impostando una tensione di 14.1/14.2v e una corrente di 2.5%. Personalmente penso che una corrente di coda di 4% causi una sincronizzazione anticipata prima che sia veramente completamente carica. Infatti se noti i cb e regolatori victronenergy hanno una corrente di fine assorbimento di 2% e non di 4%. Solo lo. Smartshuunt ha una impostazione predefinita di 4% per sincronizzare il 100%, ma non ne capisco il motivo ....

[@anthonylangton3664]

Hi I have A Multi with new Victron Lead Carbon batteries. I understand these are more efficient than standard Lead acid so what would \i set as an efficiency value and a Peukert value?

[@dethleffsglobebus8624]

Please tell me if I can use any of the Victron Batery protect models for my 48 volt Lithium battery system?

[@johannesboonstra6917]

not all, but there is a 48V model as well!

[@michaelmunnelly-v9z]

Having 4 x 12 volt 270 ah batteries in series and paralell giving 24 volts and 540 ah. I am charging this with a Panda 6000KW generator but seems to take days to charge the batteries form 55% to 90% CEF is set to AU ?

[@johannesboonstra6917]

This is an DC or AC generator ? od DC , sure the negative is on the correct end of the shunt /On AC , where are you charging with?

[@michaelmunnelly-v9z]

@@johannesboonstra6917 This is DC Generator, shunt is wired correct what are the correct settings my BMV Battery monitor for this set up ?

[@michaelmunnelly-v9z]

looking to set the discharge floor to 50% and the relay to start the generator at 50% and stop at 90% what would the efficiency need to be set at also ?

[@johannesboonstra6917]

@@michaelmunnelly-v9z for lead that's about 75-80% , on lithium its 98%

[@kevinh7985]

Thank you for the very detailed explanation. I had no difficulty at all understanding your accent at all as I worked with FLS for several years. Additionally you speak in a very distinct and measured pace. A trait i noticed was common with many of my Danish colleagues at FLS. I will be installing the 712 monitor in the spring. I have 3 lithium for the house bank and 2 led acid for the starter and bow thruster banks. What would be the optimum setting to accommodate a mixed lithium & led acid chemistry bank or do I need to completely separate the disimiilar banks? Cheers Kevin

[@tonysmith9255]

Dear sir, I have a mppt 150 85 -tr. On many occasions on a cloudy but with clear sky's the controller reaches its maximum of 85a and remains at this for some time. Will this blow the internal fuse or cause it to shut down. I ask this because for the first time the controller stopped working, was not hot just warm. After switching off the pv and switching it off in the app the main fuse for the battery from the controller was removed. After about 4mins , fuse refitted, pv switched ON, the switched ON in the app. It restarted and all was OK. Would appreciate your comments on this please, thank you. Regards. Tony.

[@johannesboonstra6917]

no, the unit will limit the current , and is ablate do this 24/7 . IF it stops working its most likely to overvolste on the PV side which potentially can damage the controller. So please check if the Voc cannot be higher /too close to the maximal value (150Vdc in your setup)

[@cooocooo3880]

Heeft de smart bmv invloed op de mppt 100/50 wat betreft het laadproces of is de smart bmv puur een monitoring system?

[@johannesboonstra6917]

De batterij monitor is alleen als monitor te gebruiken en beïnvloed het laadproces niet.

[@ulrich5910]

Danke. Eine Grafik oder ein Screenshot aus Victro Connect würden helfen.

[@johannesboonstra6917]

Agree !

[@bozhang8269]

agree

[@petertomas3665]

Hello, I bought the Blue Smart Charger IP22 12/30/(3) today and when my batteries (2x AGM 12v 140ah in parallel) are charging the charger makes a disturbing loud enough humming noise. As the battery charges up the noise reduces. It doesnt get very hot but i didnt expect that noise from a premium charger like Victron. Im wondering if i need to send it back because its faulty or something but the store i got it from says they may need to send it to Victron which means i will be without a charger for at least two weeks which is not ok. Anyone else with same expirience on that noise ? Thank you.

[@johannesboonstra6917]

there is a noise coming from the charger , mainly depending on the AC voltage level. If you think yours is too Lous, please contact the dealer and have them have a look/listen. PS two week waiting for a replacement IF something is wrong is not true when contacting the official dealers (found on the website)

[@petertomas3665]

@@johannesboonstra6917 Thank you very much.

[@kgroth]

Regarding capacity, just to be sure; I have 3x 12V 115ah batteries in parallel. Do I then set the capacity to 345ah? And use 345ah for the calculation of tail current? My SOC is not helpful at all so I’m trying to find out why. Tail current (what the battery is receiving after being charged for 12 hours) is 4,1a. That gives my a tail current of 1,1% if I use 345 as capacity.

[@johannesboonstra6917]

ye correct

[@beewee201]

M

[@MotorhomeDIY]

This is interesting where did you look at tail current ? The current for 4amp from your solar app that was putting current into the battery or the current from the mains charger looking in the bmv settings app for current going in

[@MotorhomeDIY]

Also do you have to turn all loads off to test this current or use loads ? Sorry I’m trying to learn myself instead of someone doing the settings for me I have 230ah lead battery and trying to figure out the tail current in the bmv app I’ve turned solar tail current off. surly you only need tail current in the bmv app not both

[@MotorhomeDIY]

It’s 0.04 x345 which is 13.8amps which is your charge current so 1.1% is 4amp 2.2% is 8 amp 3.3% is 12amp so I would pick 3.8% tail current

[@pfoxharp]

You say "a lithium battery doesn't need an absorption phase", but then later, "take for the voltage charge, the absorption voltage minus 0.2V". Why do you refer to the absorption voltage for lithium, when there's no such thing?

[@johannesboonstra6917]

the lithium does not need absorption , But the charger does have a absorbtion setting which is used to balance the lithium battery

[@zsolti789]

Isn't easier and user friendly - even for humans like me - to choose battery type directly in bmv? Number of cells is also useful parameter (my first 48V battery pack contained just 15 lifepo cells = 48V (not 51.2V, because I am human ;) Everybody talks about 12V systems, however 48V is a must have for homes. Also, you haven't mentioned how the communication/charging is handled if mppt and bmv are connected to color control gx. Thanks.

[@paulshanesmith]

My BMV712 was a complete waste of money, I'm guessing like most similar monitors. It counts the state of charge downwards but doesn't count upwards, all it can do is reset to 100% when it sees the voltage you've told it equals fully charged. This means that as soon as I do any trip, unless the voltage hits the fully charged level, the soc reading will be wrong and misleading.

[@johannesboonstra6917]

When it only counts down and not up, I advise you to have a look at the wiring as then most likely the charge current is not flowing trough the shunt but directly to the battery. The monitor does NOT work with the voltage level to determine the SOC (as that's not a good indictor) but on current/energy instead (which is the right way to do this) So please check the manual and installation and I am sure the BMV will make you happy!

[@paulshanesmith]

@@johannesboonstra6917 of course the charge current isn't flowing through the shunt, the shunt is on the negative side exactly as per the instructions. I didn't say it monitored usage based on voltage, I said it resets to 100% when it reaches a (user defined) voltage, that's all it's capable of. Total waste of money.

[@johannesboonstra6917]

@@paulshanesmith per instruction, both charge AND discharge current need to flow through the shunt Please read the manual well , if you don’t follow the instructions, yes then it’s a waste of money

[@MotorhomeDIY]

Hi everyone a little help please Am I right with these setting with using a mppt with lead 230ah battery mppt settings are Absorbsion 14.6 float 13.5 tail current 4… bmv-712 settings Charge 13.3v Discharge floor 50% Tail current 4% Charged detection time 3 mins peukert 1.25 Charged efficient factor 85% Multiplus settings absorbsion 14.6v Float 13.5v Or have I got this all the wrong way ? my understanding the charged voltage on the bmv needs to be 0.2v lower then the float in the mppt which is 13.5v so remove 0.2v leaves 13.3v or is it 0.2v lower then the absorb charge in the mppt so that would be 14.4v it’s very confusing sorry same with multiplus settings it’s confusing giving the mppt the bmv & multiplus all these settings to work together!

[@johannesboonstra6917]

the Vc needs to be lower then the charge setting by 0.2Vdc at least,When having solar this needs to be based on the absorption voltage

[@MotorhomeDIY]

@@johannesboonstra6917 thanks for the reply really appreciate you taking time to buddy 👍 so on my mppt I’ve got 14.6 absorb and 13.3 float so that means in the bmv I have charged at 14.4 and float 13.1 Also in the video he says to adjust the tail current to 6% is this correct ? I have 230ah of lead battery

[@fc436]

In the video (and in the manual) it says that with a solar charge it is advisable to set the synchronization with a voltage 0.2 lower than the absorption voltage, and a tail current of 4%. I adopt another system. I set a sync voltage at 13.5v (-0.3v with respect to the floating voltage) and a tail current of 0.8%. And a time of 6 minutes. In this way the smartshuunt is synchronized every day after the floating phase has begun. And the jump is always 1 or 2%. That is, in the moment of synchronization, the AH count has already reached 98 or 99%. And the passing of clouds cannot cause false synchronizations. (((I'd like to remind that the real current of a fully charged lead acid battery agm is 0.3 mA for Ah of capacity. This means that a 100 ah fully charged battery absorb ONLY 0.03 Amp at 13.8v. Otherwise the battery is not really 100% but about 99%.)))) Is there any contraindication in these settings? THANK YOU

[@johannesboonstra6917]

In your case you will see a lot false syncs on a cloudy day as the amps drop off fast at a cloud but the voltage drop slow....

[@fc436]

@@johannesboonstra6917 Thanks for. Answer. In fact, I have never seen a false sync in 6 months that I have the smartshuunt. I live in the camper. There is one synchronization every day, around noon, or later if it is cloudy. When there is very bad weather, the synchronization does not happen. If a cloud passes, it is true that the current drops. But having set a voltage of 13.5v, the schunt does not sync. All synchronizations always take place when the charge has reached 98 or 99%. And the AH bill is about - 2 ah. I think this is a good result. I think a 4% tail current does not indicate a fully charged battery. Rather it indicates a 90/95% battery.

[@fc436]

@@johannesboonstra6917 in fact, if pass a cloud, it's true that the current drop fast. But also the voltage drop under the set voltage(13.5v) almost immediately, if the battery is not fully charged, and there is not enough current to maintain the voltage above the set voltage (13.5v). Today, with a clouds alternate sun day, the battery start with - 20ah from the previous night . The absorption lasted 1h and 10 minutes, and the synchronization happened only after 3 hours after the end of absorption. When the AH count was at - 2 Ah, the percentage was at 99%, and the voltage was at 13. 79v and current in to the battery was 0.79A. I think the jump only from 98-99% to 100% indicates a very realistic reading of the smartshunt with these settings in these conditions. With defaults setting (13.2v 4%) I have a jump from 93 to 100%. And synchronization happens ever before the end of absorption. With settings suggested in the video for solar configuration (14.2v 4%) also I have a jump from 93-96% to 100%. And synchronization happens ever before the end of absorption. I use the battery every night from 100 to 80/88%. And the charge current of solar charge controller is on average 5-12 Amp. Maybe for these reasons the default settings doesn't work fine in my case. In conclusion I think the default settings (synchronization before the end of absorption) is OK. But if you now very good your battery, your charge controller, and all your system, you can set better the smartshuunt. With a synchronization only AFTER the end of absorption phase. In this way, the reading will be more precise.

[@MotorhomeDIY]

@@fc436 this is very interesting 🧐 I use 230ah of lead battery banner bull could I also try the settings you mentioned above because I’m also having issues following mentioned in the video ? I use a 50 amp mppt and bmv-712

[@rolfsliep]

Ik heb een smart solar 75/15 moet de spanning van zonnepaneel dan ook aan gepast worden op de bmv 712 smart

[@johannesboonstra6917]

Nee , de MPPT wordt afgesteld op de accu , niet op de monitor

[@odin8647]

Hi Johannes, Thank you for your informative video's! How long before a Victron smarthsunt will drain a fully charged 100 ah lifepo4 battery (superpack) if the smarthsunt is the only thing connected to the battery? (i.e. when caravan is not in use in winter) Or should I disconnect the smarthsunt together with the battery?

[@johannesboonstra6917]

the self consumption is

[@odin8647]

@@johannesboonstra6917 So no worries. Thank you for the answer!!

[@kevgermany]

Thanks, just what I needed to know, really helpful. Now I to sit down with pen and paper, go through it slowly and make notes. Just too much to take in in one go. So in reviewing... Question. I have easy solar with mains and solar charging. I should set the BMV according to solar rules, will this still be ok for mains charging? Seems yes, but...

[@GeorgiosAKounis_GNEMS]

Hello Johannes. In 8:52 you are referred to a graph of discharge and charging. Where this Graph can be found?

[@thisguy2588]

Anyone know what I can do about my “low voltage” alarm? I have 300ah lithium battery with 400W solar. I left my iPad charging overnight which cause the voltage to drop to 11.62v which it’s been floating at all day

[@johannesboonstra6917]

Then please recharge the battery asap with solar or a AC charger

[@mbilal429]

what about 220Ah battery float, absorption voltage and charging Amps when charging from Solar

[@johannesboonstra6917]

that depends on the battery and charger setting. Please ask the installer to make the correct settings.

[@jh665]

Thank you for the great explanation @victron. just to confirm. According to the battery supplier, the absorption voltage is 29.4V. That means that the setting fot the charged voltage should be at 29.6V. And not to 26.4V as recommended in the BMV manual. Also should I raise the tail current to 5%-6% instead the default 4%.

[@johannesboonstra6917]

if absorption is 29,6, Charged voltage is 29.4! higher then 29.6 will never be reached

[@jh665]

@@johannesboonstra6917 I think there is a misunderstanding. My settings are above 29V and not 26V as recommended by the BMV.

[@johnmachter40]

​@@johannesboonstra6917dont you say at 6:50 that the charged voltage (VC) should be set 0.24V lower than the FLOAT voltage (not the absorption voltage like you mention here)? that would be quite a difference between 29.4 and 26.4V

[@wernerheye1102]

Hochinteressant, wo kann ich den deutschen Text der unter dem Video eingeblendet wir als geschriebenen Text, z.B. als PDF, herunterladen? Mit freundlichen Grüßen Werner

[@johannesboonstra6917]

The subtitles can be selected (between 7 languages)

[@γεωργιοςκοζυρης-μ7φ]

if possible to use between inverter end home 220 v surge protector

[@johannesboonstra6917]

yes

[@AndrewMetcalfe]

I find this product very frustrating. I'm using it with a 200ah LiTime 12V battery, a LiTime charger... I can not find a configuration that will reliably reset the SOC to 100% after charging. I have posted in your community several times and the advice has been unhelpful. I also find your support model of depending on dealers to be a disaster. Your products are complex, with apparent nuance in your settings, and the dealers are entirely unprepared to help figure this out either. Overall this gives a very poor impression of your product. It's too complex for the dealers to configure, it's too complex even for the forum members to advise on. Where am I supposed to go?

[@JohannesBoonstra-ol2nz]

I am sorry to heart this. it's actually not that complicated but it's not plug and play for users without technical background. Then better have an installer set it up. Anyway For your lithium, takes the charger voltage setting minus 0,2Vdc as the Vc setting. take the Ic as 5% so that the current needs to be low and the Tc at 5 min. Should work fine when charged

[@AndrewMetcalfe]

@@JohannesBoonstra-ol2nz It's frustrating to have you say I should just use an installer, when your documentation is so lacking. If you're not wiling to to create clear documentation for end-users, then you should stop selling these via retail channels. You can't have it both ways.

[@JohannesBoonstra-ol2nz]

@@AndrewMetcalfe The product is indeed not plug and play and requires experience on batteries to setup. The documentation and manuals go as detailed as possible but do require technical background. This goes for many technical products in your system I am afraid. It's impossible to make a technical accurate product for almost al batteries and assume the unit can be set up without any knowledge on the battery and charge regime. Most people have managed to set it up though, it's also not that hard. But I am sure your dealer/installer is willing to help you you need assistance

[@AndrewMetcalfe]

@@JohannesBoonstra-ol2nz Thanks for replying, I really do value your engagement. I do think you'd do well to have some independent documentation specialists have a look at the instructions that you are providing. This is a common question in your community.

[@JohannesBoonstra-ol2nz]

@@AndrewMetcalfe the majority of user dont seem to have issues, the ones lacking the experience can contact the dealer/installer, is there anything wrong with that? These are trained and motivated to help and you could even learn something on batteries

[@erwinvanasperen5353]

Anybody can give me right charged voltage setting? I have 300 amp Lifepo4 battery with 2 140 watt solar panels. Thx.

[@johannesboonstra6917]

When that's 0,2Vdc LOWER then the absorption voltage

[@erwinvanasperen5353]

@@johannesboonstra6917 i set it at 14.2 volts. Seems to work fine

[@cskeise]

💙👊😎

[@goatlady7761]

how about a video on setting up victron connect on windows 10??????????

[@fc436]

I think a lead acid battery Battery that absorb 4% of capacity in current, is NOT FULLY CHARGED. Maybe is 90/95%. A fully charged lead acid battery absorb less 2% of capacity at absorption voltage, and less of 1% at floating voltage. A tail current on smartshuunt of 4% means that every synchronization will be anticipated respect to real 100%,and false.

[@johannesboonstra6917]

You may use that as setpoint s well if you like of course. Our experience is that after a bulk period with a 10-15% charge current the SOC is already 80%-85%.

[@fc436]

@@johannesboonstra6917 That's what I think too. After the bulk phase with 10% current there is a SOC of 80/85%. But At the end of the absorption phase there is a SOC of 99% if the absorbed current is less than 2%. In fact, the battery chargers or solar controllers (also victronenergy) that terminate the absorption With the tail current, they do so below 2% or less. A current of 4% on the other hand does not indicate 100% SOC, rather than 95%. I did some tests, and my victronenergy AGM Deep cycle 110ah battery is not at 100% when it draws 4.4 Amps in the absorption phase. It is at 99, x% when it absorbs about 1.7Amp in the absorption phase. Otherwise why do your Smartsolars terminate absorption with a tail current of 2%? And not 4%?

[@frodev728]

@@fc436 so just adjust your settings as you see fit. I also disagree with some of these settings for lithium batteries, especially when charging with solar that only manages a relatively low charge current.

[@MotorhomeDIY]

@@fc436 yes but 1.1% tail current in the bmv is 4amp in the mppt 4amp ia 1.1%

[@justinbelote1768]

That went way over my head very fast lol. Can anyone help me with my settings. I’ll have two lithium 230ah batteries This is what I have so far Absorption 13.8 Float 13.4 Absorption 1-2 hours Equalization? Peukert 1.05 Efficiency 99% Threshold current .10 Time to go 3 Tail current ? Discharge floor 20% I’m sure I. Missing some settings but any help would be appreciated.

[@ScarmackProductions]

You should just scrap this video, worthless without visual aids to go with what you're saying. And I'm not the only one to feel that way I see haha

[@victrontech]

Perhaps then it for you the best to read the manual, there are visuals there. Hopefully that is making it clear to you.

[@ScarmackProductions]

@@victrontech Manual sent me HERE 🤣🤣🤣

[@victrontech]

@@ScarmackProductions I am seriously wondering what it is what you dont get after reading the manual and looking at the clip?

[@ScarmackProductions]

@@victrontech I am seriously wondering what you don't get about someone wanting to see the ACUTAL PROCEDURE done in person rather than some blokes floating head with a terrible accent the entire time?

[@victrontech]

@@ScarmackProductions Most users are not having too much problems finding the correct settings. If you find settings/explainations too hard to grasp I think you would be better off contacting the local dealer or installer. They can try helping you in your own language without an accent. They can be found on the were to buy page on the website.

[@Askme812009]

Kevin Costner is Dutch?

[@johannesboonstra6917]

you bet!!

[@rjverweij8263]

Duidelijke woorden, aanpassen dus!

[@chriscalomino5229]

Copy use voltage to figure out power level and disreguard the % on the monitor because its useless do you so many variables.

[@johannesboonstra6917]

? the voltage isn't telling a reliable SOC, that's why you need to set the unit up right and have a very accurate readout.

[@getubelogin]

Great vid, but I really struggle with that Dutch accent, why not get Jono to do these vids?

[@VictronEnergyBV]

Oh Geoff haha! Victron is a big Dutch company and I'm busy making on location installation and 'what's in the box' videos. Johannes knows his stuff so why not listen to him again and again! Jono PS. I wish i could speak Dutch just as well as Johannes speaks English! :-)

[@getubelogin]

@@VictronEnergyBV I agree the guy is brilliant, but even after listning loads of times I struggle to get all of the info he is trying to impart. On the language front, I'm concious that the Dutch as a nation are very good with languages. I hope Molly is keeping well, give her a stroke from me, we really miss your Vlogs, do you own Alice or has she gone to another lucky owner?l

[@VictronEnergyBV]

Don't forget you can enable subtitles. I personally go through the English versions after created to ensure they are correct - that may help! Molly is asleep next to me now as I edit the next Victron video! I still have Alice and guess what, it's nearly finished inside - shock!! LOL

[@johannesboonstra6917]

@@getubelogin i will try harder next time ;-)

[@helmo5663]

as a German I like the dutch accent and understand Johannes very well. Great explanation

[@ToddM452]

Uh, can you repeat this again.

[@JRathor]

T

[@2598111]

Hhh

[@steveb3791]

Ummmmmm this might be the worst video on youtube it's unfortunate because I really want this info I didn't want a chemistry lesson

[@johannesboonstra6917]

Thanks for the compliment ;-) , unfortunately I couldn't think of a way explaining how a battery monitor works as it does and not explain a battery..

[@TheHulioG]

@Steve Barnes Ummmmm This might be the worst comment on KZbin. It's unfortunate because most people can grasp simple concepts. If the chemistry is to complicated I would recommend speaking to a qualified Electrician before you electrocute yourself.

[@Tom-Fisherman]

@@TheHulioG Touche'