[Craig W]

Originally Posted by Toon

A few days ago, I bought a Reedy AS309 7000mAh 65C 7.4V 2S LiPo (from MB Models http://www.rccarshop.co.uk/index.php...v-2s-lipo.html). Friday night is my local club race night, and I have just got back from using the LiPo for the first time. The problem is, the cells won't balance. I always balance charge, and charged the pack at 6.0A (which is the highest my charger will do), but 1 cell charges to 4.2V, but the other cell won't go above 4.0V. The charger ends up just constantly varying the charge rate up and down between 0 and 0.5A, but the cells won't balance. I thought the cell voltages might even out through use, but after 4 charge/discharge cycles (through racing), the imbalance is still there.

Has anyone had experience of this kind of issue? Would it be worth trying a storage voltage discharge, then a slow balance charge at 0.5-1.0A to see if the cells balance out? Or, as the LiPo is brand new, shall I just contact MB and try and get it replaced?

Cheers

if you know some1 with true 20 or 30amp discharger after race take 1000 to 1500mah out let them cool then try balancing them if that does not work return them