Growatt 3000 24 Volt Settings For Lifepo4

[@albeeright]

This video save me a battery bank. I was trying charge my chinese made battery bank using the lithium ion settings without success. Thanks you very much for the info you shared

[@meghantackett496]

Man I wish I could just hire you to help me get my housing power situated. I will be watching ALL your videos!!!

[@broncstomper]

Gave a like for the first tip of shutting off the button beep (press down and enter buttons at same time). I've seen a few different "this turns off the beep" and no others worked. Thanks for that. Tomorrow will tell if your settings work for getting mine to charge all the way.

[@thinkfreelivefree6951]

Hi Bronc. Thank you for watching and for your support. Glad the video could help in some way. Please consider subscribing if you found the content useful. It really helps the channel grow. Thanks.

[@আমজনতা-প৪ঙ]

Best explanation.

[@lachlanbird9688]

Thank you for the video report .

[@thinkfreelivefree6951]

Hi Lachlan. Thank you for watching and for your support. Please consider subscribing if you found the content useful. Thanks.

[@merrillbalan]

I could not make my Solar to keep charging as my 02 setting kept coming back to 0amps. not sure why but as soon as I use the US2 setting you recommeded, I started charging and never stopped . thanks so much!

[@thinkfreelivefree6951]

Hi Merrill. I am so glad to hear it was able to help your situation in some way. Thank you so much for watching and for your support. Please consider subscribing if you found the content useful. Thanks.

[@junkerzn7312]

For LiFePO4, generally speaking you want to set a Float voltage of between 3.35V and 3.375V per cell. So for a 24V 8s system, Float would be between 26.8V and 27.0V.. The reason you set the float here is because a fully charged LiFePO4 battery will 'settle' (remaining fully charged) at around 3.3V. So this float will provide solar support for your load without depleting your battery, while the sun is up. It will very slowly trickle charge the LiFePO4 battery if there is no load, but for an off-grid system you generally don't care because the instant the sun goes down your loads start to draw the battery down. IF you also have a grid connection most of the time, using the lower 3.35V/cell float (26.8V for an 8s LiFePO4 system) is fairly conservative. For the Bulk target you generally want to set a target of between (roughly) 3.45V to 3.65V per cell, which for an 8s system would be between 27.6V and 29.2V, approximately. Now the bulk setting depends *HEAVILY* on the C rate that your solar system is nominally charging the battery at. If you don't have a lot of panels and can only charge the LiFePO4 battery at a low C rate. For example 0.2C or lower, then you generally need to set a lower bulk target to avoid over-charging the battery. This will still fully charge the battery. However, if you are charging the battery at a higher C rate, for example 0.5C (e.g. if the battery is 100Ah, 0.5C would be 50A), then you need to set a higher bulk target to avoid cutting off the charge too early (the battery will not be fully charged if you are charging at a high C rate and cut-off at a lower bulk target voltage). In this case, charging up to 3.65V cell for the Bulk target might be necessary to get a decent charge. There are other factors too. Lower Bulk targets may leave some solar energy on the table because the charging current will wind up being lower than what the solar can deliver once the battery goes above around 50% charge. Higher bulk target always run the risk of over-charging the battery. Though LiFePO4 is pretty resilient just generally. The rule-of-thumb 'safe' Bulk target voltage is around 3.55V per cell (which would be 28.4V for an 8s LiFePO4 battery). The Growatt should have parameter settings to allow the bulk target and the float voltages to be separately set. Also, I didn't catch the LiFePO4 setup but note that a BMS is mandatory. -Matt

[@thinkfreelivefree6951]

Awesome Post Matt. Thank you for sharing all of that with us, very valuable information and thank you for watching. Please subscribe if you found the content useful. Thank you for your contributions.

[@KampervanemPrzezAmerykę]

Thank you for all that info. It was also very helpful for me.

[@thinkfreelivefree6951]

@@KampervanemPrzezAmerykę Thank you for watching and for your support. Please consider subscribing if you found the content useful it really helps the channel grow. Thank you.

[@awfarms8525]

Aloha, Great Info! I'm running a 24v 3000w Growatt with two 24v 100ah ampere batteries. This has helped me out a lot. I am off grid but using a 3500 generator to supplement. I am wondering how this may apply to me. I am only pulling in 350 watts of solar at best on a 600w solar array and thats when its not cloudy which doesn't cover my 150-400w load and charge the batteries fully for the night. It seems to drop the batteries WAY TOO quickly, it turned off at 5am at 22v low cut off and it only wants to charge up to 26.5-26.6 even though I set my bulk and float to 28.2. I tried various settings with mixed results, but curious whateveryone thinks. I'm still trying to figure out what settings I should be using. Util, Sol? And what about number of batteries setting? Sorry I'm still a noob and really appreciate anyone and everyones input. I'm saving up for a 2000w solar panel array, but any other advice would be appreciated. I live on the Big Island of Hawaii where I get a lot more sun. I know It should be doing better than this. Please Help! Mahalo!

[@junkerzn7312]

@@awfarms8525 Sounds like the panel is not generating enough power and is only able to partially charge the batteries during the day at best. My assumption is that this is why the battery voltage is not able to climb any higher. You have roughly 4.8kWh worth of batteries which, if fully charged, would be able to support roughly a 450W load for 10 hours. The 'solar day' for fixed panels is roughly 6 hours long. 350W x 6 hours is roughly 2.1Kwh, so your current panel setup is only able to charge the batteries half way (and that is only if there is no load). Since you have load too, it is pretty clear that you need more panels. Which you know since you are working on getting 2000W more :-). But in the mean time, see if you can scrounge up a few more panels on the cheap. Even if you have to lay them down on the grass on some 2x4's (make sure they don't wind up in a puddle). Make sure the open-circuit voltage and currents remain within the specifications for the Growatt. It should make a big difference. My second recommendation is that you collect data on just how much energy you use after 5pm until around 9a.m. the next day. That calculation is in kilowatt-hours (kWh). For off-grid living, the #1 thing on the punch list is always to minimize overnight usage. Also note that the Growatt's standby power consumption alone is going to be fairly high. I don't have the number off the top of my head but my assumption is around 60-100 Watts. It will drain the system even if you have no loads connected. -Matt

[@redshedllc9054]

Helped a little thank you ,but. Maybe you can help me , I've been messing with it and spoke to the guy a couple times waiting for a multimeter but I cannot get my panels to charge, I have lithium batteries and it's on user 2 solar battery then utility and I've set it up just like you but it still won't charge solar any ideas

[@thinkfreelivefree6951]

Hi Jacob. Try UTI first on setting 1. Let me know if that works. Can you tell me your other settings? Thanks.

[@redshedllc9054]

@@thinkfreelivefree6951 Hello thank you for your response and yeah it’s funny I put it on utility and unplugged it from shore power and it works perfect so it seems like until I find the proper settings that come nighttime I’m gonna have to put it to shore power because my batteries are set up on a cut off stage on default on user to to where it goes back to shore power if it goes below 2423 votes I believe but I want to run them down to zero basically is there an option to do that?

[@thinkfreelivefree6951]

@@redshedllc9054 Hi. You can adjust your low voltage cut off in setting 21, but I would recommend not to run your battery to zero. For lifepo4, I would not suggest going below 12% or you could damage your cells. Hope this helps.

[@redshedllc9054]

@@thinkfreelivefree6951 oh , ok thank you for the tips . I only have a few cycles on the battery bank but will definitely keep that in n mind ,I thought with lithium batteries it was excepted ,I guess just not recommended. Thank you

[@thinkfreelivefree6951]

@@redshedllc9054 Hi Jacob. With Lithium Iron Phosphate you are correct, you can run them down a lot more than AGM's and Lead Acid, but not to 0%, it will damage your cells. For example if you put a 24v battery bank together with 8 cells, you never want any of the cells to drop below 2.5 volts, that is considered to be below 10% of the battery's capacity. Hope this helps. Take care.

[@chapter4travels]

After all the comments and discussion are you still using the "USE" setting with bulk and float voltage the same?

[@thinkfreelivefree6951]

Hi. Yes I am. I use the USE setting both float and bulk is set to 27.8 volts and it seems to be working extremely well. Thank you for your question and for watching. Please consider subscribing if you found the content useful. Thank you.

[@ryanjooste2294]

​@thinkfreelivefree6951 Thanks for the video and info, please give us some feedback and let me know how it's going a year later

[@timrauscher3965]

This may be a little late, however I was having problems getting my Lifep04 batteries to charge until I watched this video. I changed setting #5 to be USE and then changed a couple settings to be 29.0 volts and they have now charged to 28.9 volts.

[@mcdonaldmatiki9242]

i have a question. my inverter wont start charging from solar after cutting off power from a low battery voltage disconnect. what could be the challenge?

[@thinkfreelivefree6951]

Hi. Thank you for watching and for your support. Depending on your battery chemistry the low voltage cutoff needs to be set at the correct level for your battery chemistry, if it goes too low your inverter may have trouble starting up because it does not have enough power to turn the inverter back on if that makes sense. I hope that helps. Please consider subscribing if you found the content useful. Thank you. Let me know if that works for you setting the low cutoff higher.

[@Tumbleweed5150]

If your inverter has a Setting for Low Voltage Disconnect, try setting it to higher than 24 Volts, (if it's a 24V inverter).

[@PhilippeCJR]

What about the settings 43 - 48, regarding equalized options? Thx for the info!

[@thinkfreelivefree6951]

Hi. Thank you for watching and for your support. I am sorry I do not know anything about those settings. Its not listed in the manual. I think it may have something to do with if you put several inverters in parallel mode. Please consider subscribing if you found the content useful. Thanks

[@Tumbleweed5150]

Equalize charging only applies for lead-acid batteries. LiFePO4 batteries do not require equallizing, so This man didn't use it.

[@dhd1706]

Where did you buy the growatt. All show that SFP 3000 TL HVM24 only works with lead acid. could you explain me thanks

[@van_jigsaw_land8885]

My settings on setting19 and 20 does not want to change from 23v, any advise?

[@GrowingUpGoudie]

Hey Jake, I have played and had many issues with settings. Float and bulk seems to best set to the same with Lifepo4 cells . Tail current will reduce the solar output after you hit the peak voltage setting. You can still obtain max SOC at a lower voltage than 3.65 volts per cell. If you set the voltage too high and you have cloud bursts you may have fault error (08) because the bus goes over 30.2 volts for a moment. Now that is with a 2000w array. I'm running with 27.6 for float and bulk on a 272 ah battery. One more thing to think of is you need to add your consumption to the to the watts going to the battery to know what your panels are producing and the Growatt is also consuming 50 watts. PV to battery is 390 plus the 50 load and the 50 of the Growatt. I've compared my BMS watts to the battery and the Growatt watts to battery and they were very similar so this is why I think you need to add the consumption plus the Growatt usage.

[@thinkfreelivefree6951]

Hey Mark. Thank you so much for this information, I really appreciate it. What do you mean by tail current? Thank you for watching and for your support. Please consider subscribing if you found the content useful. Thanks.

[@GrowingUpGoudie]

@@thinkfreelivefree6951 tail current is when your controller slowly reduces the current. It is similar to absorbing. Once you battery will only accept say 2 amps at the set voltage the charging process shuts down. That’s when you are in float. Your Growatt will need to see the voltage drop due to load before it starts to charge again.

[@thinkfreelivefree6951]

@@GrowingUpGoudie Hi Mark, thank you very much for this info. Have you tried using the US2 setting for lifepo4 and if so what was your results? Thank you again.

[@GrowingUpGoudie]

@@thinkfreelivefree6951 My settings are about the same as using US2 so the results would be the same. I think!

[@thinkfreelivefree6951]

@@GrowingUpGoudie Thank you Mark. I have been testing both and it seems to me that USE works better than US2. I got another question. It seems like my solar production gets really low at around 2pm when the sun is bright. My Growatt Mppt controller pulled only 60 watts at 2pm today while my batteries were not fully charged, they were at 26.5 volts. Any ideas or suggestions? Thanks for your time.

[@DIYwithBatteries]

I want to buy those blue brick shaped lifepo4 batteries soon if they exist here ;) Nice info... Sir! 👍

[@thinkfreelivefree6951]

Thank you Sir. Where are you again? India. I ordered mine from China through Alibaba. I think they should ship to India. Thank you for watching.

[@Cruzian]

My EG4-LL battery communicates perfectly with the RJ45 cable connected to my Growatt 3000tl and set to Lithium. My battery SOC on the Growatt is now in % rather than voltage. I can set cutoff, switch to grid, and start charging battery all in percentages now. Love it. Signaturesolar has great videos and support.

[@thinkfreelivefree6951]

Hi Jeff. Thank you for watching and for your support. That sounds awesome. Please consider subscribing if you found the content useful. Thanks.

[@alonzodesantis6989]

Great video suggestion Growatt recommends charging @ the 2c rate I'm assuming that's for solar and utility made those changes 40 amps solar and utility and my batteries charge much better let me know what happens

[@thinkfreelivefree6951]

Thank you for watching and for your support. Thank you for that suggestion. I will definitely test that out. Just so I understand correctly, are you suggesting that I change setting 2 to 40amps? Thank you, I will test it out. Appreciate the contribution. Please consider subscribing if you found the content useful. Thanks.

[@alonzodesantis6989]

@@thinkfreelivefree6951 yes settings 2&11 you have a 310ah battery bank so the 2c rate would be 62 amps I would do at least 55 amps let me know

[@thinkfreelivefree6951]

@@alonzodesantis6989 Thank you Alonzo. My bms has a max of 50 amps limit for charging. So I will try 50 amps. Do you know what the math is with the 2C rate? Thanks.

[@alonzodesantis6989]

@@thinkfreelivefree6951 simply put it's 20% of the total amp hour rating

[@alonzodesantis6989]

@@thinkfreelivefree6951 curious what's your solar panels wattage and how are they connected

[@freetaylor72]

Hey I have the same system with 4 24v 50ah battle born batteries, I don't have my panels hooked up so I just plug it in to the wall. Haven't got any loads so it just runs on it's own which shows 7 watts. My battery bank is 4800 watt hours, so why does cycle through charge states every 4 to 5 days? Is the unit using more than 7 watts? 7wh x24 hours is 168wh, times 5 days... nowhere near 4800watts. Is this normal? Thanx man

[@thinkfreelivefree6951]

Hi. Thank you for watching and for your support. The inverter uses about 50 watts when turned on and about 2 watts when in standby mode. However, it really all depends on how many watts of solar you will hookup to your system how quickly your batteries will charge. I hope that helps. Let me know if you have other questions. Thanks. Please consider subscribing if you found the content useful.

[@woodknack1]

on setting 10 you have 2 24v batteries in series or 2 12v batteries series to make 24v? I have the same system I put two 12v lith batteries together to make 1 24v 100amp hr battery. i have my setting #10 as 2 in series. I was wondering if I should just have it as 1 instead of two? whats the difference?

[@thinkfreelivefree6951]

Hi, thank you for watching and for your comments. Setting 10 is not settable, I believe the growatt senses the configuration of your batteries once connected. For 24 volts it is 2 and 10. Meaning 2 12volt in series to make 24 volts. If it was 48 volts it would be 4 and 10. Hope that helps. Please consider subscribing if you found the content useful. Thanks.

[@awfarms8525]

@@thinkfreelivefree6951 I have two 24v 100ah connected and its still set on 2, should it be changed? Can I even change it?

[@thinkfreelivefree6951]

@@awfarms8525 No you can't change it, but your settings are correct for your configuration. Hope that helps. Thank you for watching and for your comments. Setting 10 is not settable, I believe the growatt senses the configuration of your batteries once connected. For 24 volts it is 2 and 10. Meaning 2 12volt in series to make 24 volts. If it was 48 volts it would be 4 and 10. Hope that helps. Please consider subscribing if you found the content useful. Thanks.

[@Tumbleweed5150]

@@thinkfreelivefree6951 The 10 shown on the screen is the Setting number,, so it's not "2 and 10", it's "2 IN (setting) 10. FYI.

[@Tumbleweed5150]

@@awfarms8525 Leave it. That is the correct number of 12V batteries in a 24V system.

[@muzwest6905]

I have a spf5000es growatt and by the sound of it it uses the same mppt charge controller logic as I am having the same type of issues you are having.With US2 the controller does not follow my programmed settings eg constant current and float, and also when it does reach the fully charged state the charger does not float or restart bulk charge when a load is applied.It should restart bulk when the battery drops below a certain point but does not. I am also experiencing an issue where the charge controller does not commence a new charge cycle the next day.I have tried USE even though I have LIFPO4 cells and it does follow my programmed settings but still fails to restart a new charge cycle the next day.Regards Mark

[@thinkfreelivefree6951]

Hi Mark. Thank you for your contribution and for watching. I would contact Growatt about the restart issue you are having each day. I kind of have my growatt 3000 worked out. I will share with you what I did. I changed it back to USE on setting 5 and set my float and bulk to 27.8. It has been doing an amazing job. Not having any issues right now with it. Maybe see if you can reset your Growatt and set all settings again. Thanks Mark. Hope this helps in some small way. Please consider subscribing if you found the content useful. Thanks. Let me know if you want all of my specific settings and I can send that to you.

[@Tumbleweed5150]

I have the same 5000W 48V Growatt as you. Here are my settings...that work great: Current settings on both Growatt inverters 001 SOL, 002 100A, 003 UPS, 004 Dis, 005 US2, 006 Dis, 007 ENA, 008 240V, 009 60 Hz, 010 4, 011 20A, 012 48V, 013 52.0V, 014 CSO, 015 OFF, 016 ON, 017 ON, 018 diS, 019 57.8V, 020 57.8V, 021 42.0V, 028 1, 037 to 042 [Current time and date], 043 diS, 044 58.4V, 045 60, 046 120, 047 30, 048 OFF, 049 0000, 050 0000 Hope this helps!

[@axlsavage]

Hi there, since seeing your vid I switched over to USE and set my voltages to what you use. I have finally gotten the most wattage and current I have ever seen in to my batteries. But I did notice something in regards to the unit limiting power in. During my highest point of sunlight I did notice the unit limiting current and PV wattage. I guess when the batterys are full it goes into trickle mode or something of that nature. I have a freezer running full time on this and when it cycled on the unit let wattage and current to flow again to the batterys. Then when the freezer stopped the unit stopped charging the batterys again since they are full. So maybe this is normal? Sometimes I dont see any wattage or current coming in at all. Maybe this is all normal. Seems to be working ok though.

[@trevilights]

Hi Axle. You are correct. When you batteries are full and there is no demand of power by you loads the PV wattage will go down. If your loads suddenly require more power, your PV wattage should go up to cover your demand. I have a Growatt 3000K 24v and It's been running flawlessly for 1.5 years. I have setting 19=27.2v and setting 20= 27.0v

[@thinkfreelivefree6951]

Hi Axl Savage. I am glad my video was able to help you in some way. My growatt has been doing awesome and yes, when your batteries get close to your float charge it will kick over to FC which is kind of like a trickle charge. I recently changed some of my settings, my bulk charge CC to 28 volts and my float or FC charge to 28.5 volts. And my growatt is working flawlessly. I can go for about 5 days without sun. Thank you for watching and for your support. Please consider subscribing if you found the content useful. Thanks.

[@mblydenvlogs]

@@thinkfreelivefree6951 how many solar panels do you have and are they connected in series or parallel?

[@solarenergywithjohnoeze1412]

Can someone help out please I bought 10kw Growatt inverter with 20kwr Felicity Lpbfm lithium battery, the manual says 57.6v and low voltage cutoff 48v, US2 after setting it up the inverter will be showing ero3 battery high even the low voltage cutoff after setting, it will still go back to 45v. Please what could be the solution to this problem?

[@redshedllc9054]

I have another question about this unit with lithium iron phosphate. I made a mobile solar power trailer and when I reconnected everything I have two batteries in series for 24 volts but my LCD screen says in the settings it's 48 volts but when I check with the multimeter it's 26 I'm curious how can I change it to batteries and not four I don't know how and I can't find a way but thank you let me know if anything comes to mind

[@Tumbleweed5150]

Not looking at Settings for a moment, what does the Voltage read on the LCD? The only 48V settings in my User manual for this same unit, (Growatt 3000W/24V), are #s 19 and 20. I suspect that this Page in the manual was mistakenly taken from their 48V version, rather than the 24V version. I have those two settings set at 28.8V, recommended to my by the Battle Born Company.

[@woodknack1]

Also if it doesn't need a float charge then why not just set it up at your max charge rate? I have my max charge set at 28.8 (battery manufacture says 29.2 is max) they also say in my battery documentation for my lith battery the 27.2 is float. So I have it set at that. So I dont think it is charging my battery to the fullest. I and going to try to set the float the same as the max 28.8 and see what happens. Oh and I am in USE mode. I have not tried the other mode yet.

[@thinkfreelivefree6951]

Hey Woodknack, thank you for your contributions. We all appreciate knowing how everyone else is setting their Growatt's up. My concern with going to 28.8 is that if some of the cells are out of balance or becomes out of balance it would push some of the cells higher than 3.65 volts per cell and could degrade some of my cells. So I am trying to play it a bit safer by not charging them up all the way. 28.8 volts would be 3.6 volts per cell, I would be a bit nervous that some of my cells would go over 3.65 volts on the upper limit. Thanks for your questions and input.

[@thinkfreelivefree6951]

So you are also using USE, are you seeing any issues with your Growatt in the afternoon reducing your solar? Thanks.

[@woodknack1]

@@thinkfreelivefree6951 its in my camp. i only go up on weekends. still learning and playing with it. I just installed it a couple weeks ago. I have 800w solar array put I also have two 145w panels I am going to add to the array. So I will have over 1000watts. Cabin is small 360sqft. small frig I leave going full time draws about 65 or 70 watts when the compressor kicks on. Lights are all led. My biggest draw is in the morning making coffee in our one cup k cup coffee maker that draws a lot but only for a very short time.

[@thinkfreelivefree6951]

@@woodknack1 That is awesome. Are you also running Lithium Iron Phosphate? When you get time to check it, could you let us know if it reduces solar in the afternoon? Thank you for sharing with us.

[@woodknack1]

@@thinkfreelivefree6951 Yes, I am running Ampere Time LiFePO4 Deep Cycle Battery 12V 100Ah with Built-in BMS( have two in series). Mine seems to fluctuate on wattage trough out the day. Im am sure I am not at the optimal angle for the sun. When I got to camp last weekend it showed the PV array pumping 761w into my controller. I thought that was pretty good considering it is a 800w array. I also have it setup with a generator that is remote start on and off from with in the camp so I can use both to charge the batteries. But for the most part solar has been keeping right up with it. I will know better when we get the camp finished and settle in for a week or more at a time.

[@sthomas7211]

Is this model capable of 48v? If so ... th US2 might be LI52

[@Tumbleweed5150]

No, this is the 24V version, though Growatt does have a 3000W 48V version as well.

[@benkanobe7500]

I only have questions and not answers. Can anyone help? I have not set up my GW 3000 24 yet. I am building my system. I have Twenty, 12 Volt, 1,200 Ah, AGM batteries. They are really high quality batteries and the manufacturer has very specific values for max amps, bulk, float, ...... and I want to set my Growatt to those exact settings once I bring the system live. Does anyone know if in the AGM setting if I can customize the settings for AGM so I can make them exactly as my battery manufacturer has specified? Thank You!

[@thinkfreelivefree6951]

Hi Ben. Thank you for watching and for your question. According to the user manual, if you select USE, also means User-Defined you can set setting 19 which is bulk, setting 20 which is float and setting 21 which is the low DC cut off value. I do not believe that if you choose AGM that you will be able to adjust 19, 20 & 21. It states in the User manual that you can only change those values if you select User Defined or USE setting in option 5. I hope that helps. But I don't see any problem with you using the USE setting in option 5 for your AGM batteries because then you can select exactly those specific voltages as recommended by your manufacturer. At the end of the day, it is a charge profile that is adjustable to settable parameters. Hope that helps. Take care.

[@benkanobe7500]

@@thinkfreelivefree6951 Thanks so very much. That is great news. I am in the process of building my system. My Growatt is still sealed in the box and I have been watching every good KZbin on the GW I could find before opening mine up. I still don't have my big set of panels yet as I am still deciding which ones. I do have a small set (1,500 watts) of Renogys running grid-tie inverters and four of my batteries. I have them tied to a Pure Sine Wave inverter and run my entertainment system, so lights, and Frig. It is just with extension cords and "Bread Boarded" unitl I finalize my system and set up the GW.

[@thinkfreelivefree6951]

@@benkanobe7500 You are very welcome Ben. Sounds like it is going to be an awesome setup. Let us know how it goes. Thank you for your contributions to the channel. 👍

[@alonzodesantis6989]

Is that a typo 1200ah batteries each Growatt is rated for a 200ah battery bank personally I'm going to do 370 for my next system and I'll be using flooded lead acid agm doesn't last long what can I say I'm a LEAD HEAD

[@thinkfreelivefree6951]

@@alonzodesantis6989 Lead Head, 😂. Sounds cool Alonzo. I cannot speak for Ben, but I believe its a total of 1200Ah. As long as you keep your configuration of your battery @ 24 volts, I don't believe it matters how many Ampere hours it is, after all its just storage capacity.

[@Tumbleweed5150]

On Model# Growatt SPF 3000TL LVM-24P I use User 2 setting in #5. 05 Battery type US2 If “User-Defined 2” is selected, battery charge voltage and low DC cut-off voltage can be set up in program 19, 20 and 21. It is recommended to set to the same voltage in program 19 and 20(full charging voltage point of lithium battery). Thereaches this setting.

[@Tumbleweed5150]

19 Charging Voltage 28.8V 20 Float Voltage 28.8V These were some of the settings that the Battle Born Battery Company recommended for using their batteries with this Growatt.

[@Tumbleweed5150]

I installed the system in my girlfriend's shuttlebus/RV a bit over a year ago, and we have had no problems with it.

[@Tumbleweed5150]

My setting for #3 is UPS

[@Tumbleweed5150]

2:50 Check to see if the Charging LED is on steady at 2PM, as that means the battery is full, and it will only charge if the Voltage drops to a certain point.

[@Tumbleweed5150]

7:51 14 Ch Source Priority CSO

[@captricflyer3116]

One Question and Info for you. I am very experienced with Growatt,, US2 should only used if you Do Not Have BMS communications.. if you have BMS capable Litho Batteries that have the BMS boards , then you should Allow Growatt and BMS Litho Batteries work together.. If using US2 should then adjust using the 20%/80% ratios When using US2 you have to be careful as to the Rate of Charge. as this can over time shorten your Litho bat life. for that matter any type of battery.. Be Safe