Lipo rescue...

[Farmer Giles]

School boy error on my part this morning..

was flying my T500 around and totally lost track of the time and whilst coming in to land for the final time (thankfully) it seemed to lose power. Pack was warm but not massively so..

So back home, put it on the charger as set to do a balance charge but the charger thinks it's only a 4S pack as the voltage has dropped to about 15.5v.

It's still over 14.8v so it should be picking it up as a 5S but it wont. I've checked each cell with a meter as I thought maybe one of the balance leads had come off but they are all there as they should be, I've just taken too much out of it..

So if I leave the balance lead out and just put it on charge for 20 mins or so will it recover the voltage enough to then use a balance charge to finish it off ?

Any opinions or suggestions welcome and before you ask, no, I don't have a cellpro 10 charger

hope this hasn't cost me a lipo

Ta

[pieter]

yes as above , just go for it and charge without balancing for a while
my charger has a function for this situation and its called forced charge

so may the force be with your battery ; )

[brin]

saved one of my 3s by putting in a charge as a 2s then swapping over to 3s
it worked.

[Farmer Giles]

it's back..

just it on a 'normal charge for about 20 mins then plugged the balance lead in and started a balance charge and it recovered.

it took 2700 mAh on the balance charge and about 500 on the forced bit at the start so way over my 2960 80% limit..

I guess time will tell if I've damaged it in any way...