Now I am trying to work this out , it's very odd.
I am charging my new Optipacks , (which i love so far ) with a Thunder Power TP1010C charger with a data linked Tp-210V balancer
My problem is that although charging at 1C (3.5 amps) sometimes the charger cuts out and states "cell over voltage" from memory 4.2 volts.
This usually happens at around 94% charged.
Its entirley random as I can then put a charge in to another pack no problem at all .
If i check the packs (off charge) the cels are around 4.18 volts and balanced to 0.04 of a volt
I never discharge the packs below 30% and have been running them in nicely.
My only ideas on this are that my particular charger charges through the main leads then bleads the highest cell down to the lowest cell with the balancer.
Ideas anyone ????
Thanks x Rachel