This product uses a built-in rechargeable Li-ion battery which is charged by usb power. So when you plug it into your Computer or Laptop it recharges with the power it get through the usb port. You can also buy a USB AC Charger for MP3 Players it plugs into your wall outlet and has two usb ports on the bottom to plug into. You can get on at Walmart for about $15.00 called MusicPower
There are even USB Charger for you Car as well.
Charging Section of the User Manual
This icon will be displayed at the upper left corner of the screen. The following pictures indicate the
charging status of the battery:
(1) When the battery is charging, the battery icon will be changing from an empty battery to a full battery icon to indicate the process.
(2) The following icon will replace the charging one when it is full but the power supply is not being cut off. Which is a Battery Icon with a Lighting Bolt in the center of the icon.
(3) The player will automatically shut off when the power is used up. In this case, all setting will be
You can get this information on the Nextar website below and the right hand side there section call Downloads click on the MA715.pdf.