I found a battery pack from a few years ago attatched to an remote control car, but cant remember how i used to charge itits one like this
go to walmart or kmart and buy an rc car battery charger. this type of battery requires a slow charge, that is about 12 hours. there are other, special type batteries, that can be fully recharged in 10 minutes. DO NOT TRY THAT WITH THIS RC BATTERY. just make sure that the charger is for the 9.6v pack.