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If using say a 6kw split phase inverter, normally the limit is 3 kw off each leg. The ? I have is with an auto transformer, can it combine the total 6kw output onto a single 120v branch without over amping either leg coming off the inverter? I tried doing this with a simple 10kw 220 to 120...

Thought some of you might find this intresting. I got a hold of 2 tesla powerwall 2's, both for $700 which are 48v, 13.5kw each. I had to figure out a way to use them in my 24v system & came up with using a Growatt solar charger to convert the 48v down to 24v. It's not a perfect marriage but...

I acquired 2 defective powerwalls & want to salvage the cell body out of them. The bms connector has 24 pins. Any idea if there's a retrofit bms for this 48v battery?

I got a question from a member in my solar forum I couldn't answer concisely. I have mixed panels in my system varying from 310 to 330 watts but the voc on all of them are nearly the same & have no issues but for a theoretically scenerio lets say I have a series string of 3 panels @40v voc each...

This is really odd. I have a dual 48v & 24v system, the 48v system has 2 80 amp growatt chargers & they work fabulous together. My 24v system has a victron 150/100 & a growatt 120 amp working great together. I added an 80 amp growatt to the 24v system & both growatts quit working. I thought...

I have 2 victron 150/100's combined & was in need of more power so I got a Growatt 120 amp charger to try out & see if they'd combine together without any issues & they did. Whether that will happen with other brands is hard to say but for that much power @ half the price of a victron was worth...

If you have for example a DC 2 pole 200 amp breaker & combine both poles, my thinking is it'll now trip @ 400 amps. Would that be a correct assumption? Update: OK, I had to do this test on my own to find the true answer. Got the breaker capacity test done. This is the way it is... A double...

This is normally a $500 charger so when I saw a place offering it for $66 I jumped on it only to find out it was a fraud webstore but paypal was lickity split getting me a refund as I'm guessing they've been flooded with like issues. The store goes by Betmatter.

I just ordered 1 of their 120 amp chargers & I don't see this in their user manual but wondering if anyone that has their gear knows if it will do pc monitoring via rs485 to usb? I know they have a wifi module for them but cable monitoring would be better price wise.

I've been wondering as an example, what if I had a string of panels that was putting out 145v & combining it with a string doing 120v. It would seem to me the stronger string would shoulder the majority of work energy until knocked down enough for the other string to contribute. This is the way...

I understand a diode is a dc directional semiconductor. other than blocking a reverse current, I don't get the need for them. I saw this diagram below in another post & it doesn't make sense to me. As you see, the diodes are bridging each string of cells but why are the strings both solid...

To my surprise it did exceptional & here's a video report I did on it. Update on the PowMr battery equalizer. I just got in the rest of them to do all my 48v strings & found 1 getting warmer than the rest. That string had 1 batt with a much lower voltage than the other 3 so I pulled the eq wire...

1st day firing up my sheds solar furnace. Walk thru video.

I have 2 Systems, A 24v & 48v. The 48v is using 2 Growatt 80 amp chargers rated for 5kw each. The 24v is using 2 victron 150/100's @ 3kw each. So I have chargers with a total input capacity of 16kw & 22.5 kw in solar panels feeding them. In these videos I attempt to explain how I'm adding extra...

This was the last of my 57 panels I had to get up & chose to do another tracker. Am very happy now to have 19kw of panels & no need for more.

I got a good deal on 1 of these but I was under the impression you could get all 6kw @ 120 & that's not the case.

I have several Growatt mppt chargers that'll only accept a max of 100 volts @24v & my panels are stringed 3 in series @ about 120v & I don't want to restring the panels just to use these chargers. I had no luck with a net search for such a step down buck converter. Anybody know of something like...

Right now I've got 2 1000 watt panel strings more than what my chargers can take & once I get my last dozen panels put up, that'll give me 6 extra strings. So to get set up where I can engage all those panels automatically when passing clouds or a solid cruddy day knocks down the output, I took...

I'm wondering if anyone would know why 2 8s lith banks would have such a wide charge/discharge difference. I have a 280 & a 300 a/hr bank but the 300 amp bank charges & discharges at double the rate of the 280's. So in the morning after it's been running all nite, the 300 bank is more depleted...

Took my original builds & add some extra goodies.

After the pack was balanced, I set my charger to 27.6v which is about 3.45v & is about the knee wall of a pack that's close to fully charged. Longevity of lith's is reportedly determined by limiting the discharge depth & the upper voltage. Those who may not be familiar with the term knee wall...

I know many are happy with their victrons but here's details on the trouble I've had with them. It seems they may be cheapening their quality & depending on their reputation to stay afloat. 4 charger failures.

As most know, lith cells should never be charged past 3.65v. The ? I have is, is it an absolute rule the charging volts should never exceed 3.65v while charging or for example, can they be charged at a higher voltage such as 4.1v so long as it's cut back before reaching 3.65v? I've been doing...

Got my new 8s done & charging. 1st thing I see right off the bat is the cells are charging near equally compared to my 1st 8s that's totally a mess 'cuz I got stuck with grade b or c cells but it delivers the full capacity anyways. So now I have 680 a/hrs available on my 24v inverter or about 16...

I ordered 4 from this seller with US stock & free shipping. That order got screwed up & just 2 were sent in about 3 weeks, the other 2 another 3 weeks from a screw up in sellers paperwork. The cells all passed the quality test as genuine grade A so I sent for another 4 & this time all 4 came in...

I looked on amazon & ebay & 8s monitors are all I can find. Surely there's a 16s monitor somewhere that I can see all 16 cells displayed at once, with bluetooth would be even better.

I found a 16s pack listed for sale & I don't think the owner knows any stats on them. If you know the make & amp hrs, plz post a msg. It's a poor pic but I hope it's good enough.

I got 3 new Growatt chargers & to access the chargers data you need either a wifi dongle or gprs. I couldn't find anything on gprs that made any sense to me so does anyone know about this & how it works? Signature Solar where I got them from doesn't know enough about them to tell me anything...

I've had 3 out of 4 victron 150/100's go bad on me so far. They replaced 2 of them but wouldn't on the 3rd, said it was wired wrong which is bullshit so I'm ditching their crap & trying out these Growatt mppt chargers. About the size of a shoebox, screw terminal lugs, better warranty than...

As a new lith user I'm led to believe after reading many posts, 1 of the longevity preservation techniques is to limit the high & low voltage cut-offs to a certain value. I'd like the seasoned lith owners opinion on what settings you think are proper. I want to get get as much a/hrs as I can...

I just got 3 growatt mppt chargers. I see you can get the optional wifi adapters but does anyone know if it can be hard wired via usb to a pc & if so, where can you get the software to use it? They came with usb by what appears to be vga type adapters but I can't figure out how it would be used...

Will they work together well? Yes! I just acquired my 1st 280 a/hr 8s lith pack & have a good 300 a/hr agm bank I didn't want to abandon, so I decided to tie them together to see how well or not they'd work together. 1st surprise was the lith pack took on the total inverter load til the...

Will they work together? Yeah & here's what my testing revealed. Seeing the discharge curves are quite different for each type, I theorized that 'cuz the near end of cycle for lith's is about what a fully charge agm bank is & that the lith's would likely take on most of the energy initially &...

Got my 1st lith bank up & running. Doing a capacity test now to start, then have to swap my 60 amp epever with my 100 amp victron now that I have more a/hr capacity on my back up bank then the main. Used some tube washers to make some space behind the bms it so it'll cool off better & made use...

I just got my 1st set of lith's & the top off is myffin' me. I have a weak charger to do the initial top off but here's what's perplexing me. With lead/acid you can see the voltage gradually rise & the amps decrease as it charges. I haven't got my 1st lith topped off yet & what I'm seeing so far...