Li-ion Battery Pack, Voltage:3.7V, Capacity: 1300mAh
Designed on the basis of specification of Nintendo 3DS Console built-in battery.
Dismantle and then open the bottom cover of the 3DS Console to replace the battery.
Helps to prolong the using time of Nintendo 3DS Console
Note: NEVER run out of battery power when you are about to score the winning point.