Posted by a reviewer on Amazon

The keyboard comes with a micro usb cable for charging and a small paper manual which says that the device has a builtin 250ma rechargeable lithium polymer battery

Posted by a reviewer on Amazon

The battery doesnt appear to be replaceable

Posted by a reviewer on Amazon

This gets the usb adapter away from any interference caused by the metal casing of your laptop or the wifi card etc

Posted by a reviewer on Amazon

Peculiarly you have to wait until the backlight turns off before turning it on permanently

Posted by a reviewer on Amazon

Note if you turn the keyboard on and off it resets to backlight off

Posted by a reviewer on Amazon

Also with the backlight on if you dont press any keys for 60 seconds the backlight switches off but comes back on when you press a key

Posted by a reviewer on Amazon

This keyboard is incredibly useful especially with the fact that it is bluetooth there is zero interference so the drop rate is nonexistent

Posted by a reviewer on Amazon

If you can’t see the keys on the keyboard then change the back light to one of the 7 different colors with each color having 3 different brightness levels