If a 85-220V AC input charger with an unstable output voltage, could be used to charge a battery? this is said OK. Two videos,one is tested under 110V input voltage, and the other is 220V input. Both of them are filmed by the supplier. the reason of two videos is we doult if the unstable voltage is just under 110V or both 110V and 220V . and what is more, the supplier said the could charge a battery from 3.2-3.8V within an hour with that charger under 110V input voltage. the battery is most likely Panasonic 2800 or 3200mAh 18650, and the output of the charger is just 5.5V 450mA,which is posted outside it. Can this be real?