MPP Solar LV6548V New Model - 390V PV, CAN Support, Idle Power, and More

[@LithiumSolar]

MPP Solar LV6548V... ebay.us/niOvAr MPP Solar LV6548 (Clearance)... ss.currentconnected.com/product/mpp-solar-lv6548-all-in-one MPP Solar LV6548 (Warranty)... www.currentconnected.com/product/mpp-lv6548/?ref=lithiumsolar (affiliate links)

[@VinceBadovinatz88]

I think these old versions are a great way to go with the great Idol consumption being so much lower.

[@WillProwse]

Geez that idle is awful haha. Glad you got your hands on these! Very useful information

[@LithiumSolar]

I was so excited when these came out, big disappointment to see that. They ruined one of the big factors that I feel made the original units so popular.

[@WillProwse]

@@LithiumSolar yes absolutely. Pretty big let down. As usual in the solar industry haha. I don't understand how they don't lower the idle by now. Everyone complains about it, and they absolutely can.

[@VinceBadovinatz88]

@@WillProwse how much is the idle consumption on the smaller all-in-one inverters. Like a 5000 W inverter do you know offhand

[@VinceBadovinatz88]

I think growatt couple other company cell them. I think I've seen video on your site haha

[@cowpen]

@@VinceBadovinatz88 I've got an MPP Solar LV5048 that has been running great for 3 years until it died a couple days ago. Idle consumption was 65w. I'm looking hard at the deal on that old model 6548 as a replacement. Hate those MC4 connectors tho.

[@SkypowerwithKarl]

Very detailed review! I must’ve had my head in the sand, I didn’t even know that there was a “V” version. That idle voltage makes me happy I’ve got my old units

[@LithiumSolar]

Head is not in the sand LOL, the V version just came out a couple of months ago.

[@aspendell209]

RS-485 was the standard for inverters in 1998. But to still be using this legacy tech in a "new" inverter (a quarter century later) says a lot about how much the companies engineering has really advanced.

[@edc1569]

Half the worlds infrastructure operates on rs485, predictable timing and bandwidth is probably vital for this application, what standard do you suggest?

[@svenshanah]

When things are 30 years ahead of their time, they still look more than respectable 25 years later.

[@r.b.l.5841]

Thanks for getting the new 6548's and finding out the high idle consumption BEFORE we bought them! If they had increased the DC input but reduced the idle consumption they would have a winning model!

[@HBPowerwall]

That idle consumption is killer! BUT very interested to see the integration with BMS!!!

[@Sanwizard1]

Sure would be nice if Voltronics and Deye sold direct in the US, or if a US company actually built some good competetive and value priced units here in the USA.

[@HighTechLab]

Great analysis! Thanks

[@jimmyg6215]

My EG4 6500 has a 90W draw at idle. That is inefficient for me but I live with it since I only use it’s for a 120V setup. I just had to add a couple extra panels to the string. Fortunately it’s a 500V MPPT so I can get into the 350-400V range and feel comfortable it’s won’t overload the MPPT input even in colder New England.

[@LithiumSolar]

I tend to agree if using only 1 inverter. It's when two are used that I think it becomes problematic. I also agree that it doesn't take much to just add a few more panels. If only I wasn't so darn tight on space... My property is angled and tree-ed in a solar-unfortunate way lol.

[@jetfu400]

what a letdown...that idle consumption is huge!!. my 3kw toroidal low frequency inverter only idle at 25-30 watts. my mpp solar hv 6048wp 6kw only has 60 watts idle draw.... that 106 watts power draw is criminal!!! thanks for the info, your channel is very good!

[@isovideo7497]

In practise, you don't need to allow for extreme cold and the voltage for unloaded panels. The panel voltages should be under load. Just remember that if you switch off the panels, not to switch the panel feed back on during peak solar hours on a cold day. You can use a voltmeter to verify the total string voltage first. In my opinion, it is better to do this than have maybe one fewer panel in each string.

[@LithiumSolar]

That is very bad advice. Your system will see open circuit voltage every single morning when the sun is first rising before the controllers kick on and become a load.

[@krslavin]

@@LithiumSolar I have never seen anywhere near peak open circuit voltages at sunrise, as the sun's rays are nowhere near perpendicular to the panel surface, and sunlight travels through more atmosphere at the start of the day. The variation of the open circuit voltage Voc depends on the logarithm of the light intensity, and for typical silicon cells is from 0.565V for 160 W/m^2 irradiation (typical sunrise) to 0.616V for an irradiation of 1000 W/m^2 (midday). Even before sunrise, the logarithmic Voc of the panels is high enough to start the inverters and put the panels under load. I think you just have to be careful in crunching the numbers to get the maximum out of your system.

[@tjunkieu2b]

Where can I learn about BMS/ inverter communication Rs485 vs CAN bus vs nothing What functionality do they enable?

[@jakealmaguenther4366]

Could you do another test to check the total efficiency, ac grid to battery, then back to ac. We in Ontario Canada will have ultra low rates between 11 pm and 7 am. My plan is to charge at night and run on battery from 7 am to 11 pm without solar.

[@AdamDeLay07]

Thanks for sharing! Yeah, that high consumption is just way too high. I thought the EG4 6500 was bad... Seems like it has to be more than just the fan differences causing the higher consumption. Appreciate you digging into the guts of the units to see what's different. I wonder, can the LV6548 and the LV6548V be run together in split phase? Then you could use 1 inverter to utilize the higher MPPT voltage.

[@LithiumSolar]

I suspect the FETs are also different. I didn't take it apart far enough to grab the part numbers and didn't think about it until after the fact. MPP Solar has stated that the two versions cannot be used together.

[@AdamDeLay07]

@@LithiumSolar No worries. I never thought about those either. That stinks that they can't be used together. Would have given a little breathing room from the higher idle consumption.

[@VinceBadovinatz88]

​@@LithiumSolar terrible idle consumption I've been wondering what my son gold LV 65-48 is consuming. Gosh the 65 first NPP version is pretty decent. I wish wish I could check my idle consumption. I got to figure out how to do it

[@rcinfla9017]

The higher voltage rating on HV DC capacitor is primarily for margin. They may run the HV DC voltage slightly greater to allow more ripple voltage on HV DC bus. The ripple voltage dip cannot drop below about 200 vdc or it will clip peaks of sinewave AC output. Terrible idle power consumption. You are correct in the greater the inverter's HV DC bus is run, the worse the idle current and worse the inverter efficiency under load will be. It looks like exactly same board used in EG4 6500 inverter. The board below this board with the two toroid coils at the end peeking out from below is the dual MPPT SCC controller. So it looks like MPP Solar LV6548V is same as EG4 6500 unit.

[@twloughlin]

My question would be is there a way around the increased idle draw, or is this simply the cost of doing business if you're in a cold weather climate and need that extra voltage? What design changes could be made to mitigate the situation? Superb video - your reaction was priceless!

[@LithiumSolar]

I suspect it has to do with the choice of FETs used. I didn't take it apart far enough to grab the part numbers for comparison; however, that would have to be where the power is being consumed in my non-engineer opinion. The higher CFM fans seem to suggest the same as well.

[@AdamDeLay07]

@@LithiumSolar It would be nice if the fans only came on when the temp got too high or when you draw past a certain load threshold. I get having them run all the time when PV is coming in, or when you're outputting thousands of watts, but when their near idle, seems like the fans could ramp down (or only run 1 as opposed to 3).

[@johnguilbert1349]

You have to pay to play if you want efficiency. Victron MultiPlus-2 48/3000 Zero load power 13 W SmartSolar MPPT RS 450 Self-consumption 15 mA

[@VinceBadovinatz88]

​@@johnguilbert1349 can you give me a link to that please

[@VinceBadovinatz88]

@@LithiumSolar what are fets

[@Roll2Videos]

Wow, Loved your reaction. Great work sir 🫡

[@clarencewiles963]

Thumbs up 👍 I don’t know what to say. They’re improving but!

[@RobertSchmitt-u7l]

More crap to go wrong with those. Go for lf inverter. There can be very reliable modular setups for everyday power needs and high demand applications. Just requires a large low voltage to 120 240v transformer. egs002 work well, use or make a choke with thiick wire, and less turs. get a toroidal core to fit about 10 turns of thick wire going to the transformer. egsoo2 boards work well. And buy them without mosfets, to then put your own high quality mosfets in. Companies should sell modular modified improved kits.

[@DavidHalko]

“Idle draw… unacceptable” Might want to try a Genetry Solar inverter, for lower idle draw. Their latest is even lower! Waiting for my preorder to be fulfilled, but it has no charge controller… so I will use mine A/C coupled.

[@LithiumSolar]

Did you order the 6kW version? Please let me know what the idle is when you receive it. I don't see any notes about it in their user's manual.

[@LithiumSolar]

Oh I see it now, they're claiming 31W for 6kW?? That's pretty darn good!

[@DavidHalko]

@@LithiumSolar - I ordered the 12kw version… I had a huge idle draw on a 3000w with 6000w peak 12v inverter, that can run half my house (and no hvac compressor), so I wanted a low idle draw and need a massive peak for my compressor. I was upfront with my 31.2kw peak need to turn over my hvac compressor, they accepted my 12k pre-order and said they think they could handle it with their 12k unit. Looking forward to the adventure!

[@jamessmith6115]

OK, I get the idle draw. However, I currently have 24 450W panels, 45V @ 11 amps ea. I have them currently wired in series-parallel (to reduce PV under 250), which hits the LV6548 power limit of 130V X 18 amps per input or 2,340 X 4 or 9,360W theoretical max. To get more power input (with current panels), I would need to add more of the old LV6548=more idle draw. With the LV6548V I can rewire my current panels to straight series and get the full 270V PV at 11 amps or 11,800W input. Better yet I can add 8 more panels for 360V X 11 at 3960 X 4 for 15,840 watts input without rewiring anything. That's 6,480W more input that is way more beneficial to me than battery draw. I live in Central Florida. So what am I missing? This seems like a massive win?

[@mmbodnar]

did they ever issue any hardware revisions or FW updates to bring the idle consumption down?

[@LithiumSolar]

Nope... They've been entirely silent on the matter and the times I've asked they told me they were still "working on it". Personally, I don't think they care. I've been looking to move to the new EG4's that came out recently, possibly in the spring.

[@WiSeNhEiMeR-1369]

HOWdy L-S, ... Thanks for the REVIEW COOP the WiSeNhEiMeR from Richmond, INDIANA ...

[@GavinStoneDIY]

I loved the side by side comparison. That’s a shame about the idle consumption. That is just way too high in my opinion. If in need of more pv, people would be better off using the original models coupled with a quality charge controller. As far as communications, it just doesn’t really seem to matter. The inverters function great without it. If I were you I’d just charge ahead with your original LV’s you’ve had.

[@VinceBadovinatz88]

Yep I agree

[@VinceBadovinatz88]

Yep I agree

[@davidnoack9727]

Is it OK to use Monocrystaline solar panels with the LV6548V ?

[@LithiumSolar]

The LV6548(V) manual states the following "WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single crystalline, poly crystalline with class A-rated and CIGS modules". A monocrystline panel would be the same thing as "single" crystalline.

[@mmbodnar]

So I have a Voltronic AIO that is sold under the brand Maple Leaf Power Systems, basically the LV6548. It has the LI-A battery type setting. I didn't know this was the CAN-BUS option. AOI was made in Q2 2023. Has anyone gotten this CAN communication to work?

[@LithiumSolar]

Yes, the LiA actually works very very well. It took me a LOT of back/forth to get the protocol documentation out of MPP Solar though and I'm not aware of anything, not one single product, that supports the protocol yet. So.... it's pointless right now unless you're looking to build your own integration with it.

[@johnguilbert1349]

Save your money, buy Victron gear. You get what you pay for.

[@LithiumSolar]

I know... it's tempting for sure.

[@VinceBadovinatz88]

I totally agree. If I had to do it all over again that's what I would do dang it I'm stuck with this sungold LV 65-48 copy

[@onthelake9554]

Agreed if only they would get it UL approved .

[@deanburrito6943]

I'm still in limbo as to what to purchase. What makes the victron better than the eg4 6500ex?

[@LithiumSolar]

@@deanburrito6943 I've settled on the original LV6548 that were manufactuered in Q4 2022 so it will have the new CAN protocol. Since filming this video, I have unfortunately confirmed that certian parts of the new protocol don't work on the LV6548 with older manufacturer dates.

[@vincentdelacruz2874]

Can this unit be charged with regular 120v from a generator? It's an inverter generator that has a 120v 30amp outlet.

[@ronbridegroom8428]

Excellent video and review. You put in a lot of effort and got key details for us. That is very much appreciated.

[@MaxGoddur]

What options are available for folks incorporating solar panels and micro inverters? Obviously we can't take the AC power from the solar panels and use it directly for 115vac circuits much less 240-vac circuits. And how do we charge batteries with an AC out put from the solar panel/micro-inverter combo setup?

[@Bemoregetmore]

Can you please update the links for the diy 3.5Kwh solar generator, I am going to do my best to build one for myself. Thank you do much for your help and all your info

[@froggy442]

That idle consumption is weird....my voltronic axpert Max 8kw...dual mppt 2x4000w ...90-450v...idle consumption is 95w.

[@LithiumSolar]

It's weird for sure... Do the fans constantly run on yours even while it's idle (no load)?

[@froggy442]

Yes fans always run

[@jimholland4417]

I got 25 solar panels now. What do I need to run my whole house operators? Please let me know my name is joseph

[@seanathanq]

that power draw is insane, i wonder if its soemthing they can fix with firmware, i know its not the same but my SMA inverter idles art like 30-32w

[@LithiumSolar]

I don't think it's a firmware issue. I think it's just choice of components.

[@kevinmills5293]

The charging algorithm may be ok for LFP but I know four people with similar HV string inverters who all now have trashed FLA batteries.

[@LithiumSolar]

What happened???

[@VinceBadovinatz88]

Darn I wish I knew what the abbreviations meant

[@kevinmills5293]

@@LithiumSolar I wish I knew. One 48v system couldn’t make the absorb voltage required (when you included the temp compensation). Another system would go straight to float when it reached adsorb voltage. The absorb time, according to the manual, is calculated as 10x the CC period so if it took 2 hours to get to absorb, the absorb period would be 20 hours so the batteries would never go to float. From what I’ve seen, I would never use them on a FLA battery. If this charging algorithm is used on LFP batteries, I can’t imagine it being very good for them either.

[@BenBartlow]

Can you post a link for the Bluetooth shunt you use. You mentioned it in a recent video I think but I couldn't figure out what brand you said

[@kevinmills5293]

It’s a Batrium shunt but it’s not Bluetooth.

[@davidbruce5377]

Does this new series screw terminals accept 4 AWG? I have been reading, that 4 AWG does not fit.

[@LithiumSolar]

They're crappy terminal blocks, but yes, #4 thhn does fit... tightly, with some wiggling.

[@davidbruce5377]

Thank you for responding. Because I am connecting to a 100amp curcuit, I may have to use # 3 and if the blocks would accept a size 4 reducer fitting? IYO@@LithiumSolar

[@reddog1171]

Thanks

[@davidparker7156]

nice job

[@TundeEszlari]

King video.

[@khaledewida]

Hi, how reliable are the LV6548 inverters. I am considering purchasing one for my off grid use. How long have you used it and do you still recommend it?

[@LithiumSolar]

I've had a pair of LV6548 (original version) powering most of my home for 3 months now without a single issue. I'd consider them very reliable. I would not purchase the LV6548V (new version) though due to the ridiculously high power consumption. I still have the V versions but will likely sell them eventually.

[@khaledewida]

@@LithiumSolar Thank you very much for your feedback. I was debating between a signle unit LV6548 or 2 units of 3000W either MPP or Growatt. Do you have any experience with that?

[@SuperVstech]

Odd that EG4’s version has been 500V input limit a long time now, but the mpp still is under 400V

[@LithiumSolar]

I've heard two reasons on this, neither of which I can verify though - exclusivity agreements and would require redoing the TUV certification process.

[@deanburrito6943]

@@LithiumSolar you clearly were interested in upgrading but decided against it because of the high idle loads. Is there a reason why you haven't switched to eg4?

[@LithiumSolar]

@@deanburrito6943 Yes, there are a few reasons why I'm not interested in the EG4.

[@honuswagner9348]

@@LithiumSolar Can you say why? or are the reasons already listed in another video? Knowledge is power bro, and you have more than most of us, so if you don't like something for a reason it's worth putting out even as an opinion piece!

[@diy-bj2ed]

Can the regular lv6548 inverter work with a lifepo4 battery without bms communication without throwing up errors?

[@LithiumSolar]

Yes it will work as long as you program all the settings correctly. The communications connection is not required.

[@diy-bj2ed]

@Lithium Solar ok thanks. Thought it had to have bms communication to work with lifepo4 batteries

[@kpd3308]

Characteristical?

[@LithiumSolar]

Is that a question of some kind?

[@davidniquot6423]

100W is not acceptable ... mine is already 45W and it's on the high side in my opinion. Mine is a 5.5kW inverter with 500V max input PV (total 6kW PV max) 900$ as discount .. mmmm .. payed mine 400€ (5.5kW not 6.5kW)

[@ambersmith6517]

Why are all these idles so high any way my low freq inverter that will do 8k all day uses under 20 watts at idle

[@GavinStoneDIY]

Schneider?

[@LithiumSolar]

Which inverter do you have?

[@GavinStoneDIY]

@@LithiumSolar with those stats it almost has to be a Schneider. I thought they were 40ish watts though. Either way, insanely efficient.

[@VinceBadovinatz88]

​@Gavin Stone DIY Homestead howdy Galvin 😊 I wonder if I still follow you. With the DIY Homestead added

[@onthelake9554]

Schneider is the only one that I know with those numbers .

[@hackingtheenvironment]

I've never watched your actual lithium Solar videos before because I'm a Chiahead. What's your NFT Received address? I was going to send you an NFT or two from a collection I made that has "Lithium Solar" Placed strategically on it.

[@honuswagner9348]

NFT's are dead bro, and wtf is a "chiahead" is that a new way to say you prefer the company of men?

[@hackingtheenvironment]

@@honuswagner9348 I'm not even gonna be defensive of myself or NFTs. I want to, without hating on you even, point out how hurtful comments that disparage a whole segment of the population are and how bad that could make a gay person feel when you try to insult anyone by inferring that they are gay. Just want you to really look at yourself and decide which ways we can make the world a better place. Thanks.

[@honuswagner9348]

@@hackingtheenvironment You seem to be taking it over the top. I tried googling "chiahead" firstly, with no relevancy, so I asked a question which you seemed quite sensitive about so unless there's some reply more enlightening I'll assume my initial question was inferred accurately.

[@hackingtheenvironment]

@@honuswagner9348 yeah if your honestly curious, Chia is a blockchain that Lithiumsolar has done some videos on, that I'm also a fan of.

[@SeleneHammer-pn8hr]

I have a lv 6548 and you know what? I hate it it works great but it is soooo loud it makes an awful noise all the time. Unless your systems room is a mile away you will hear this pos screaming all night.

[@LithiumSolar]

Yes, they're loud. I keep mine in a separate structure outside. Even if they were quiet, I'm not a fan of running lithium batteries in the house.

[@kakarikiIck]

Wow the wattage difference, doesn’t seem worth it.

[@McCuneWindandSolar]

I have their 4048 have not used it in a long long while, I had to use a Transformer for 240 split phase but good thing I was able to hook to the grid with just 240 volt going to the inverter. Crazy to see more Idle usage. I could see this is they had a big split phase transformer making them heavy as heck. but these don't have that. you think the idle wattage would be really low.

[@petergravy6893]

It sounds like you may be better off getting the MPP 11KW MAX inverter (like me). 500 volt mppt and only draws about 65 watts.

[@LithiumSolar]

That appears to be a 240V inverter? I'm not seeing where it outputs 120/240V.

[@petergravy6893]

@@LithiumSolar Sorry mate yes it is only a 240 volt inverter. I'm from Australia and we only use 240 volt.

[@matthewknight5641]

Maybe you can return them. I mean you got a nice system and that kinda money spent i feel you shpuld end up with a product you are happy with. Man im glad you and the other KZbin guys do the videos and i learn alot from yall. Wish i could figure out my neutral ground bonding problems with my little all in one powmr 3000 watt inverter. Im not smart as yall that do this all the time but id sure like my off grid tiny home camper to not shock me when its raining outside

[@danfitzpatrick4112]

I had the same round and round never ending experience with MPP solar engineers with the ground bonding issue when I commissioned my inverters a couple of years ago to the point I gave up and figured it out myself. The idle wattage was already something that disturbed me even on the old version which I have, So that's an awesome find on the new version and wow, terrible! I totally agree with the maximum open circuit voltage being another problem with the older version too. Thanks for the side by side comparison here! Keep up the good work!

[@TheJuiceman247]

Any chance you could take a look at the new LItime server rack battery? Looks like its an upgrade from the amperetime 90ah server rack battery

[@LithiumSolar]

Unfortunately LiTime's server rack battery is a 15s configuration making it 48V nominal as opposed to the industry-standard 16s at 51.2V nominal. I don't plan to review it as I don't find 15s batteries to be as useful.

[@TheJuiceman247]

@@LithiumSolar Wow! I had no idea. Assumed it would be another copy of an SOK or EG4. Thanks for letting me know. Appreciate the response 👍