New Apexium 280Ah - Eve Cells - Problem?

[Welly]

The only test is at 3.45V, what is the difference at that point. For my 2 two 16 cell batteries the diff at 3.45V is 0.010V. Currently at 3.365 and the delta is 0.004V but that does not tell me much, when I had a runner and a lagger it showed the same until 3.40V+ when the delta expanded, then had to leave the balancer to sort it out.

I'll need to check following adjusting settings to those that SteveS provided. At this time I believe the cells were better balanced at around that voltage, but can't specifically say... Currently at average of 3.382 with 0.007 deviation and 81% SoC.

 

[AshleyL]

Sorry, I don't understand the relevance of your comment to mine, I didn't mention SoC, just that the cells were now balanced when discharging as opposed to some running away when charging, prior to implementing SteveS settings.

.......Your pack still unbalanced, lifepo4 has a very flat voltage during discharging. As long as you still see cell running away during charging, the pack is still not balanced.

 

[Welly]

.......Your pack still unbalanced, lifepo4 has a very flat voltage during discharging. As long as you still see cell running away during charging, the pack is still not balanced.

Well, that remains to be seen. Unfortunately the Sun is not cooperating today and charging has only been a trickle at around 20A. The real test will be charging at >=70A where I saw the problem with the "old" settings.

 

[Welly]

Steve.S

Many thanks for your advice. This particular battery has now charged at close to 100A up to 100% SoC with a maximum cell delta of 0.042v and generally much lower. The settings you advised have worked flawlessly.

 

[Quattrohead]

Maybe I should write a massive wall of text instead of just telling you the correct setting in the very first post after your question. Yes I feel the need to be loved LOL

 

[Welly]

Maybe I should write a massive wall of text instead of just telling you the correct setting in the very first post after your question. Yes I feel the need to be loved LOL

Ah , OK.... Thank you for suggesting the 55v setting, that was also a great help. Steve did explain the ins&outs, but no denying you helped too... Enough "love"?

 

[Brucey]

Maybe I should write a massive wall of text instead of just telling you the correct setting in the very first post after your question. Yes I feel the need to be loved LOL

 

[Steve_S]

EVERYONE gather in a Circle & hold hands while we sing songs ! LOL....
Can a group of folks sing "You can't always get what you want" ? hehehe

 

[Welly]

EVERYONE gather in a Circle & hold hands while we sing songs ! LOL....
Can a group of folks sing "You can't always get what you want" ? hehehe

 

[pkudlins]

Hi and what is now wire ressistance of those cells shown by JKBMS ?? / It looks that I have simillar problem with brand new cells ...