signs of a bad lipo

[baz2003uk]

went out today with the savage flux running 2* 3s 5000Mah lipos have the cut-off set to 3.3v on the savage
after about 15 min it dropped it speed by over 75%
so checked the lipo's with a volt checker
first lipo was reading 3.80 - 3.79 - 3.80
second lipo was reading 3.79 - 2.80 - 3.78

both lipo's are charged using a balance charger upto the 4.20v

am i right in saying the second lipo looks to be on its way out on its cell 2 with a reading of 2.80

also would i also be correct in saying the savage is programmed to cut off at 3.3v as i set using the castle software so as soon as the ESC see's a voltage on any of the cells getting to 3.30v it cuts off

i love being a noob but think lol i am getting the hang of t all now

if i am wrong please give me a kick and slap and tell me the prob could be

looked over MT and all seems fine so i think it is all down to the lipo

cheers baz

 

[flm_savage]

I agree with your findings

Sent from my DROIDX using Tapatalk

 

[HPIguy]

Agreed here as well. Looks like you have a bad cell in that pack.

 

[2revo1maxx]

I would try running a 3.5 cutoff after balance charging them again. Lipos will also "bounce back"....in other words if they cutoff at 3.3 volts you'll see about 3.5 by the time you can check them.

You probably do have a bad cell, so keep a close eye on things if you do try it again.