We test the 3DS XL Mugen Battery expansion in a live test with other DS, 3DS, and 3DS, XL consoles. Review of the Mugen 3DS and 3DS XL battery:

The results of the battery test are:

3DS XL (Mugen Battery) 10hrs 32mins
3DS (Mugen Battery) 10hrs 15mins
DS XL 4hrs 55mins
DS Lite 3hrs 45mins
3DS XL 3hrs 40mins
DSi 3hrs 10mins
3DS 2hrs 45mins

Name of the credits music track: “Win This Race”
Artist of the credits music track: “Piccadilly Circus”
Direct URL of the credits music track: http://www.istockphoto.com/stock-audio-11384244-rock-videogame-win-this-race-loop-full-length.php
Link to the license terms: http://www.istockphoto.com/license_audio.php