Charging light stays on after charger has been unplugged.
As the title says, also, it turns off when you unplug the charger. It's been on charge since 12 last night and the charging light stays on once you unplug it while the 3ds is off. The light comes on when the battery is unplugged but the charger is plugged in. I recently changed the speaker flex and when it turns if it also pops.