Problem with protected battery pack

[malow]

hi, ive just made a 3S4P battery pack, using trustfires 2400mah protected batteries.

the problem is, i soldered batteries together, charged and used it til the protection circuit kicks in (to measure runtimes)

but now, in the first "sector" of the battery pack, the protection circuit does not "come back", even opening the circuit.

ive heard somewhere, that putting to charge wold make the protection circuit "unlock", and back to normal. but my charger does not want to charge if one battery protection circuit is "open". (im using e_sky hobby helicopter balanced charger ;) )

another thing, even if the circuit comes "on" again, is there a possibility that not all circuits are "on"? (like 3 cells are ok and one open)

is there a better way to do this pack? remove protection circuits of all batteries and put one to each sector of cells?

as i will drain about 4 to 7 amps, i concluded that leave each battery with original protection circuit would be better than using one each sector, as i believe one protection circuit may not be too good to high amps.

what i did wrong? (or what i did right) :mecry:

tnks!

 

[buickid]

The protection circuit is not a low-voltage cut-off in the traditional sense. Its meant to protect the user from the dangers associated with draining a battery too low. It may reset with a high enough voltage, but don't count on it to keep resetting.
Edit: AW's cells should reset with a WF-139 charger (~5.20V open circuit), I don't know about the circuit in the trustfires.

 

[malow]

tnks for the info... yeap, you are right...

a "shock" revived the first sector protection circuit. ;)

will avoid discharge below 3 volts for now, cause i did a full discharge just for testing purposes ;)