Search results

Currently I have 16, Eve cells, 304 amp hour and 4P4S, sharing a common BMS... They were pressed into service on an emergency basis maybe two years ago? Due to my poor planning... I never see them more than 0.02x sell voltage deviation... So I imagine they are pretty well balanced But there...

So I'm being a single solar panel to an existing array.. and I decided the easy way to do this would be a single solar panel pull mount I'm using schedule 40 2-in black pipe (normally used for natural gas) and a cat I got on eBay that was recommended on here I used an auger to create an 8-in...

I would like to weigh in on that if I could When I called the local electric company.. they wanted about $11,000 just to connect me So I started pricing out what it would take to build a solar setup for the house 4x MPP Solar lv6548 used $2000 80x Santan Solar t250. $4350(includes...

So a while back I brought my home system online... Initially I brought it online with 10 Santan Solar t250s Of course the only real problem is I was getting lots of shading So I moved one of my five panel arrays back about 8 ft to the south... Now this one produces a little earlier in the...

Going to be honest... I thought about it. But after about two or three echoorthy threads I got sidetracked and went and had a beer

He prefers pre-built, plastic case batteries... I usually recommend litime... They're hard to beat for the price.

That's exactly what I told him... But did he listen absolutely not

So I've been seeing that some people are using their BMS or their charge controller to activate a active balancer at a certain voltage ... Effectively leaving it off whenever it's below that voltage So I have a couple different options that I'm hoping will work for this I have the JBD 200...

Yeah that's been kind of my opinion.. especially their lightweight batteries... Their traditional prismatic cells seem to do just fine... But the pouch cells dear Lord... The first time we tested them they were about 90%... I'm hoping to do a 2-year test on them with my client in the near future...

I should say this... I actually think they build a good battery... My biggest concern is their lack of knowledge. They're selling a product they don't understand The owner's claim to fame is that he invented the zamp plug... You know the little inset plug that comes pre-installed on RVs and...

Well I can tell you that company is hot garbage. A friend of mine dealt with them a while back after their 24 volt all in one failed They tried to blame him and said that the battery is caused it to fail... Never mind that the batteries were just fine He was using a pair of redodo batteries...

Well I can tell you that company is hot garbage. A friend of mine dealt with them a while back after their 24 volt all in one failed They tried to blame him and said that the battery is caused it to fail... Never mind that the batteries were just fine He was using a pair of redodo...

Okay.. maybe I got a little heavy-handed on adding charge to cell 14 But it's almost there... Everything was good until cell 14 started its sharp rise

Okay.. maybe I got a little heavy-handed with cell 14... Maybe added just a little too much to it But the good news is it's better than it was and it's getting better with every tweak

Well I'm finally getting some results... I got to thinking about what was going on... There's a couple options. But I decided the only option I could really do anything about is that cell 14 may have slightly more capacity or possibly be at a lower state of charge overall when compared to the...

Maybe a little OCD?

Well this is different... I've never seen this much deviation on this pack at this state of charge Now I will say it has been on the same load, which is basically just a refrigerator for the entire evening... Probably since about 7:00 p.m. so nearly 12 hours later Normally at this state of...

Yep typo... Good catch 3.418

Additionally I'm noticing that it's taking significantly less time for the battery management system to balance the battery after a charge when compared to yesterday

So I did another charge today... The results are a little better... Compared to yesterday anyway Although the one thing that remains constant is that cell 14 takes the longest to charge While other cells are sitting at 3.45 and above... Sell 14 is sitting at 3.18. And by the time we get to...

No clue really... I'll have to plan a day to do that

Hehehe yeah

See post 13

I went ahead and held the battery at 55.4v. After a few hours we were at about 0.00x Delta...

You wanna hook up with my battery, lol

Well it's looking a little better this charge... So far

At what voltage do they start balancing? Do they just burn off excess or do they transfer from current from the high to the low?

Well, by the time we got to zero amps going in this is where we finished... Just not sure how a proper top balance brought me to these results?

Well so far the results aren't all that great... I'm charging to about 3.45 volts for cell Everything looked pretty good until a little after 3.41 volts per cell... Then number 16 kept pulling ahead until it got to almost 3.51... While cell number 14 pretty much stayed at 3.41 for quite a while...

Consistently inconsistent I like that

0.007v

So I was bored yesterday and I decided to use my EG4 chargeverter to charge my 16S, 280 amp hour Eve cell to 57 volts Once that was done I disconnected the BMS and the bus bars and reconfigured in 16P From there I used my bench power supply to charge all the cells to 3.65 and held them there...

Or build a pair of 16s batteries and parallel them...

I hate to tell you... I had a totally different experience. I've purchased from Amy at Docan several times. I've easily spent well over $10,000 with her. And I've sent the money in such a way that I had really no assurances that anything would be done correctly... But I can tell you this. She...