Well, I finally got my kit and I've heard conflicting info about the proper way to charge the batteries for the first time. I watched a vid that was very helpful. She said to charge the batteries for 12 hours. The info I received with my kit said to charge it for 3 to 4 hours for the first time. Which is it? Can you overcharge a battery? I dont want to screw up my batteries. Anyone got some opinions on this matter...Thanks alot. Terrie