How to connect a phone battery in a mp3 player?

Hello everyone, I would like to know how to connect a phone battery in a mp3 player ?
The player in question is a sansa clip+.
I appreciate everyone's help.?

as long as thier the same voltage just solder the positive battery terminal to the the positive input on the mp3 (using a wire of course). but be sure they are the same voltage, other wise you will probably ruin your mp3
76543216 years ago
This guy did it.
lemonie6 years ago

And the phone battery in question is?

L
fga100 (author)  lemonie6 years ago
Any phone battery 3.7 Volt.