Li-Ion 3.7v 850mAh battery provides up to 10 hours continuous play time

This battery is a direct replacement for your original Nintendo DS battery. It fits completely in your consoles battery compartment with no external parts unlike other batteries available

This battery also makes a great spare if your original ever goes flat while your away from a charger

Includes a free mini screwdriver allowing you to easily open your NDS consoles battery bay cover