sky, they sold those things for two years without a problem. from what i read overcharging and draining the batt to far down can make some of the cells inside unstable.
i checked the charger and i believe the green light is accurate, so when you see it turn green take the battery off. this type of charger will not stop charging on its own, if yours does i would use it. still, it's really not a good idea to keep batteries on a charger way beyond the necessary charge time.
Once again tib you come to my rescue. LOL. Thank you.
Okay............in to the charger they go!