StirCrazy wrote:
ya and I know it says it has to be at a spicific voltage to do its balancing... I have to find the littiture, been busy tiling around the fireplace these days off.
just looked it up, cant find out the info what does this look like to you? its a small curent but not sure that means anything.
"Balanced turn-on voltage 3.350 3.400 3.450 V
Balanced turn-on voltage difference 15 M V
Equilibrium mode
Equilibrium current 40 60 M A
Is this somthing like the one you have?
balancer
Looks like the balancer presets for the BMS. The 40-60ma "Equilibrium current" is very low. Being so low, odds are high it's a passive balancer. I'd set it to max. Gets the balancing done faster. Gotta say, with that small of current it's gonna be slow. As for the "Balanced turn-on voltage", wouldn't set it too low because it'll undo a top-balance. There's some debate on the best value. Me, I would never set this any lower than 3.400v. Not sure what "Balanced turn-on difference" is. I would expect it to read, "Balanced turn-off difference", instead. This would be the voltage delta/difference the balancer must reach before turning off balancing functions. I always set ours to 5mv, which is very low. The balancer works much harder/longer, but it's no skin off my back--lol!
The active balancer in the link isn't a Heltec, but it appears to be an exact clone. From all accounts they work just as well as the Heltec. Have to look close, but there's a solder connection/bridge labeled "run" on the circuit board. If you remove the solder bridge and connect a make/break switch you can turn it off and on. I'd keep it off unless the cells are at a high SOC. Otherwise, you can undo a top balance.
BTW, what kind of BMS do you have?