I bought a cig alike starter kit from another place and it came with three kr808d batteries all 280 mah, one manual and two auto. It also came with a usb charger. I wanted a new batt so I ordered one from you guys with the same spec kr808 280 mah auto. The issue is when I put it on the charger that i got with my original kit the tip of the battery stays lit the whole time and the charger says it is charging the whole time and I let it stay on there for four hours (longer than the other batteries take to charge). So far it seems to be working but I was wondering if I am going to cause an early death to this battery, or is it already dead and I just do not know it, or if this is normal, also if this is normal what is a good amount of time to let it sit on the charger as I have no way of knowing weather or not it is fully charged due to the way it is working. Could you give me the specs on the usb chargers you sale that go with this battery just so I can make sure it is okay?