I have 4 packs of matched ib4200's one of which has a bad cell which I need to replace but I digress.
I discharge the packs on my charger at no more than 3 amps the equalize them to 0.9v on my novak smart tray I thought that dragging 20A from the packs would kipper them badly.
I only ever charge at 4A for the 4200's and 3.5A for the 3600's
I'll be going to lipo in a few months or sooner if I manage to blag some from flebay