Lipo charging

[michael]

Charged my new core Lipo 3250 battery for first time using the core udc 20 charger all very straight forward until i tried to charge it at club meeting after running a few heats with it. The charger came up with an error msg telling me one of cells was low i think. Not sure what i was doing wrong using same volts and charge suggested as when first charged,can anyone help .

[3975dave]

Did you top it up betwwen those few heats??

[michael]

No i did not top it up i suppose thats what i was trying to do but not sure what is correct voltage and charge rate.

[3975dave]

A 3250 lipo battery run for a few heats (i'm guessing 5 min heats?) could well have gone below its minimum safe voltage. Therefore some chargers wont re-charge it. You can get it back but i'm not sure how. Mark Christopher may know how to do it.

[michael]

Thats right 5 min heats 4 of them and car was stil running ok not dying or running slow. Will put battery on charger to read msg again.

[3975dave]

Thats pushing it to the limit I would say dude. I always topped up my Trak Power 3200s every run just to be safe. Takes away the guessing.

[bald eagle]

If you have let the lipo pack go below 6volts, then chances are the cells wil now be damaged. Try charging it without the balance lead connected. Max voltage should be 8.4 v when fully charged.Try charge rate 3.2amps, see how you go.