im getting back to rc, i asked about a all around charger i will get a onyx 230. (thanks everyone!) now where do i start for lipos themselves? what dot the c stand for are there good and bad packs? are hard cased ones better(ie orion) what about charging and dis charging? can you recharge one right after you ran it? what does a balencer do? do you always need it? anything else i need to know