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The question says it all. I'm soooo done with following all these top balance suggestions. The cells were great. They didn't need this forced voltage garbage and neither did I. Now I need to try and fix this overcharged cell or figure a way to get XUBA to ship me 1 or 2. What a shame.

They sure are. They all harmonize and balance very well while charging and under the loads I use. I don't have a BMS.

It never hits the bulk setting. It never exceeds Float.

That voltage was only accomplished when forced to in parallel by that little charger, not when connected to a SCC. The settings have no impact on the voltage beyond 27.2v. Bulk 28.5, Float 27.4 for instance, still produce a 27.2v max charge. No load or for my use a normal load don't change...

The finishing voltage. No matter the settings, my 4 packs do not charge higher than 27.2v. My 3vBYDs before these were the same.

Yes, I've noticed that, and of course your answer makes sense. However, I have 4 of these packs and, in my experience, it is not a matter of wanting more or less voltage. At their "top" I can't see how anyone could pry any more amp hours out of them if they wanted to. No matter the settings or...

Why do we have all these people recommending charging figures like 28.5 or 29.2 and such. They'll never get there. Not talking forced for "balancing". Just standard SCC or BMS settings. 27.2, that's what you get. And that immediately settles to 26.8. Last forever when its there so its fine, but...

I see. It probably wouldn't be worth it for me as I have all the panels I need for another array and even a third. But this one was set up and I'm testing and working with my new banks. I thought it would be easy if I could just split it to another, as it would do the job for now. But if it...

Is it possible to connect a single 2000kw array to two separate SCCs, each with their own bank? I find my Lifepo4 280aH 24v pack is charged full to 27.2v in no time with the modest load I put on it at night, and it seems I am leaving a lot of sunlight on the table. I'm wondering if I could...

What does the balancing at a voltage between 3.4v and 3.65v accomplish if they always settle around 3.35v regardless? I've noticed this in my own case as well, and they never charge above 3.4v / ea, or 27.2v / pack.

For our 280aH Xuba cells, we just took some 3/8” copper M coil tubing we had, and pounded it flat on an anvil. We custom cut for our cells at 4" lengths and drilled 5/16" holes (for 6mm stainless screws) at 3.5" on-center. We also want to have the option to connect two packs in parallel, and...

One of the two 8S packs. I wanted to put two of my 280aH packs together for the first time. Two 8S packs, so 8S2P. Incidentally, right now I'm seeing that it looks like the BattGO gets all kinds of confused when connected to one of two battery packs in an 8S2P.

It's Alive!!! Thanks man, your diagram saved the day. Question, what happens if you connect two packs in parallel, but one is at 3.337 SOC and the other is at 3.7 SOC? Too big of a gap, too much heat transfer? Could something get too hot too fast and damaged?

You know, I may have heard that pop. I most definitely could have fried it (although it never stopped while tinkering). I got frustrated and started connecting it every which way but loose. Guess I figured I had 35 bucks. I did get it on Amazon but procrastinated for a while because I then found...

It's a tremendous help, wish I had it some time ago...it should be in the resources section. I wish I'd had it sooner, I think mine may be busted now after trying various configurations to figure this out. When I hook it up nothing happens. But when I connected it this way initially it though...

Got it. Mine happens to have a black wire, but it is at the opposite end of the harness from the circle with a neg symbol in it and an arrow on the BattGO. So should I ignore the black wire in my case, and use the one inline with that symbol?

I feel like I've tried several scenarios and none make this thing even power on. Connecting to cell #1 (main battery positive), using as the negative connection on that cell the lead from the BattGO with the arrow/dash marking, then the adjacent wire to the left connecting to that same cell's...

That's interesting, I had never seen that. And for the moment that I actually got mine to power on by some partial correct lead connections, I could see it needed just that. Still, my problem is connecting correctly to an 8S Lifepo4 in the first place. As I mentioned, following @MisterSandals...

Which are you calling cell #1? Would it be the cell with your main pack negative or your main pack positive? Also, is this "negative" lead the one on the BattGO that has a circle with a dash (negative) in it and an arrow pointing to a wire. I know that question may sound retarded, but my first...

Okay, got it. Scared straight. So setting lower than Will's 3.65, you think, like 3.55? When you say sit for 24hrs...as individual cells, or sit in parallel?

Correct. It has a dial for amperage, but when prioritizing the voltage setting, amp control is forfeited. It does peak at 5.25a, however, yes. And, yes, the amps decline to 0 ultimately as the battery fills up. But five days in, and almost no amperage change. On the forum here, everyone seemed...

So the cells were only at 3.3v. The setting was using 3.5a to charge to 3.6v. Then it was changed to 3.8v, in order to impose a 5.25a charge.

Yes, when the little charger is set to charge to a voltage, it automatically sets it's amps. At 3.6v, when connected to the paralleled cells, it set that current at approx 3.5a.

I see. It seemed from my experience up to that point it was still a very long way home. No, the cells voltage's were around 3.3v when the voltage/amps were increased.

What Will seemed to imply is that you could up the voltage and amps for a portion of the charge to get yo a closer starting point in the balancing. Like 3.5, and then adjust the dials appropriately to finish off the balance. He says the voltage can be set to 3.65v for the balance. Is this not...

I assume you meant 3.65, not 5.65. The amps were about 3.5 when set at 3.6v. I was hoping it was an option if closely observed because Will said in his video it was an option, a risky one perhaps, but that he was tempted because it would speed up the process. I thought after disconnecting from...

So I ended up not trying that, I just did one pack, 8. BUT! I did up the voltage to 3.8, which maxed out the amps at 5.25. The next morning I caught the charger pushing only .2a. The cells were each at 3.689. A bit high, I know. But, after disconnecting, they immediately began to drop and...

Finally, the perfect combination of and informative, straight up, uncomplicated, forthright and clear answer! Yeeeeesss! Many thanks.

More like 300ft, one way. But it will only be powering, charging devices, led lights, a computer... actually, desk fans and a studio refrigerator, maybe a low wattage micro, will be the largest draws. All "hot" things will use propane power.

They are just intended to be 8S. But I reserve the right to make them 8S2P. I've never seen that the battery size was limited by the MPPT manufacturer, but this one says you can use a 200aH battery pack. Mine is 280aH. If I out two together they'd be 560aH. I'm not sure why storage size would be...

Okay. I am now. I intended to do that all along, but I did think it would make me feel a bit better to knock one off the list at a time and see progress... but didn't really end up going that way. Just earned myself an extra heart attack and a couple headaches. @Ampster Incidentally, I...

Anyone know what a BMS amp rating is based on? Is it the amps pulled by your load...or the charging amps, or inverter amps. Which amps?

How far are you moving the ac once inverted? What size wire? I still hope to move mine hundreds of feet, and the guys on here seemed to think if I used 6awg I should be good to move 120v for 20amps. But using online voltage drop calculators, it seems I may need as large as 1/0. Which would be...

In fact, you've got me looking at my manual for my LV2424 now, and according to these cells are too big. Is that the case? How could that be? Can ideal buss bars impact whether my design passes or fails?

From which angle is heat buildup a concern at this battery terminal point? What I mean is, is the concern the battery's overall size (say 280aH, 24v, 6720w)? Is it the amps to the inverter or SCC, like 40a, 60a, or 80a? Or is it your personal draw or load. Like you have an inverter that is...