R. Kay had a question about charging her lithium ion battery and she sent in the following response she received from Tony at TravelScoot. This is in reference to the regular size lithium ion battery.
"It is vital that the charger be plugged into the wall power outlet first, then the battery into the charger. When the charger is plugged into the power outlet, both lights on the charger will flash briefly, and the left light will then remain illuminated. This indicates that the charger is getting power. When you then plug the battery into the charger, the light on the right will illuminate steady red until the battery is charged. At this point the light will turn green. Don't leave the battery hooked to the charger when not in use. If the battery is not being used for a longer period, charge it up every couple of weeks. Hope this helps."