Lipo's... too far out of balance?

[dongle]

I know I know - I really should know this, but I've forgotten [img]/ubbthreads/images/graemlins/tongue.gif[/img]

Noticed one of my packs is performing really quite poorly so checked it's cells - 2 read 3.35 volts, one reads 3.46 volts - this is with no load.

I reckon I might have over discharged them on the last flight, as I was proving how high I could fly a 70% and now so couldn't see the red light [img]/ubbthreads/images/graemlins/blush.gif[/img] after a balance do you think it will be safe to charge them again?

Cheers

The balance voltage range is .03 ( example cell 1 - 3.34v cell 2 3.37 ). In order to get them back in balance you need to charge each cell individually. At that point both should be back to about 4.20 volts each. After that they should be ok and back in balance. I would get in the habit of checking them every so many cycles...

[davidcollins001]

Try and get them back in balance slowly - I found that when I tried to discharge one cell just a bit it took about 30 mins for the cell V to level off. I'm not proud to say it but mine were a bit more off than that, and they have been fine ever since [img]/ubbthreads/images/graemlins/smile.gif[/img]

[davidcollins001]

Try and get them back in balance slowly - I found that when I tried to discharge one cell just a bit it took about 30 mins for the cell V to level off. I'm not proud to say it but mine were a bit more off than that, and they have been fine ever since [img]/ubbthreads/images/graemlins/smile.gif[/img]

[dongle]

ok mate - handy tip! cheers