ok in the last few months I have gone through 5 new lipo batteries . 4 were 850 MAH Tattu 3s and 1 2200Mah zippy 3 s. Being a newbie I kinda blamed it on my self . maybe ran it too low. didn't store it right, whatever. But now I've noticed a pattern. it seems on everyone it's always the center cell that fails. so my question now is could I have a faulty charger? I have 2 chargers, one is an Imax B3 the other is an Imax B6. but I'm sure I have put all 5 batteries on both chargers. so if one was defective could it damage the battery?