I just got a TC3 electric and I'm not 100% sure on what to do about charging the battery. I know the first time you charge you should do it for 15 hours, but if you don't take the battery off the charger exactly 15 hours later, does it hurt the battery? And when I'm racing, do you know approximately how long that charged battery will last and when I recharge it what amp should I charge it on and for how long? Thanks for answering all my silly little questions that I should probably know....