IMPOSSIBLE!
According to forum pundits the know-all-see-all Phart Chargers are INFALLIBLE. So what you are seeing is obviosly an optical delusion of Gran Mal proportion. Ypu must have hit button A six times extending charge time in 10-minute increments. Or maybe your power receptacle is inside-out. Or maybe you are overcharging the battery which makes it run longer.
All of the above, of course is sarcasm directed at some forum partcipants who actually BELIEVE a 79 cent IC chip can out think the human brain.
When the cells start bubbling a good battery is near to being full charge. A hrdometer check will will tell you when enough is enough.
