Hello, I just received my first KGO kit, and the instructions say to charge the battery for the first time for 8 hours, even if the light turns green. I plugged it in, and the light turned green in about 10 minutes! With all of the latest warnings about overcharging batteries and not leaving them in after they turn green, is this necessary for the first charge?? The instructions then go on to say after 8 hours, use it for 20 minutes, then charge again for one more hour, then it's "ready to use". So I'm confused, would like some clarification.........TIA.