RE: Which Charger?
i have been using a TRAXXAS quick charger to charge all my r/c battries for years and it is totally AWESOME its a peak detecting unit which gives you a full charge everytime,its also a one hour charger so its very convienant.
it has a blinking light which detects a full charge after an hour,i like the fact that its so simple and let you know whats going on not like these patethic big overnight things lol
i charge 4500 mah packs the whole time which are big and they always last me 2-3days after charging which is excellent.