Daly BMS CHG/BLNC issues.

[UnDa_KuVa]

Hi everyone.

I've been having issues with my Daly BMS ( no surprises)

At first it wouldn't balance my batteries out so 1 cell would be to high and turn off the CHG MOS. Spoke with Daly they suggested I get a balancer.

I bought a Daly 5A balancer put it on and it balanced them out and still does whilst the solar is switched off or the voltage coming in is lower than its specified for.

As soon as the full sun kicks in and the sum voltage rises, cell imbalance starts and the CHG MOS switches off yet my cells keep rising.

( Note: my battery percentage does not rise even when the CHG MOS is on my batteries are quite low now.)

Attached are some pics

*24v 150A Daly BMS
*24v 180Ah Sinopoly Cells
*5A Daly Active Balancer

 

[Daddy Tanuki]

the five amp "balancer" is set wrong so its literally unbalancing the cells. set the balancer to only come on above 3.4 / cell also set it to only work while charging.
set the stock passive balancer to only work at 3.65 (you are shutting it off for all intents and purposes) .

this should help keep it from unbalancing the pack. it will take longer to balance depending upon size of pack but still faster than the passive system and less chance of unbalancing it. you might need to top balance one time and start from scratch if you have one cell going nuts.