MP4 player
 

I have just bought MP4 player, 1.5 inch screen , origin : China , 3.7v lithium battery. My adapter have two lamps : one blue and other red . When I charge battery both lamps light , about 6 hours but not full battery and both lamps continue light.

Please tell me how to know when full battery

Best regard

maybe the mp4 is not fully charged in 6 hrs, mayb it takes 8. It is also possilbe that the lights have no purpose but to tell charger is on, it doesnt tell that battery is full.
Usually you can tell when battery is full by looking at the mp4 player's battery icon. when charging, it is constantly fluctuating but when fully charged, it doenst move.

Re: MP4 player
 

where to buy this battery to my MP4? It is China , 3.7v lithium battery.
Thank you.