Removing the battery
1. With the back panel facing you, remove the two screws to release the back cover. You will need a small screwdriver. If you do not have a small screwdriver, you can try using a pair of tweezers or very carefully using the tip of a knife.
2. Lift up the back cover from the notch at the bottom of the device.
3. Take the battery out
4. Put the battery back in, inserting the contacts side of the battery first
5. Gently push the battery cover downward until it locks into place. Then fasten the two screws on the back cover.