CafeenMan my charger has just this feature , when i brought it i was pleased that it had this, that night i left my battery on charge and at 4AM in the morning this mind blowing scream came from the shop, wife thought it was the smoke alarms lept out of bed screaming at me like a wild monkey, i ran to see what the hell was going on only to see my charger had completed it cycle LMAO!...

the wife was not as pleased with my new charger as i was , i supose i should have read that there was alert activated when fully charged but us R/C guys just like to play with our new toys i supose