Plug in the AC adapter and power the Nintendo DS Lite handheld video game systems from any 120-volt outlet. The AC adapter also allows you to recharge the battery pack, even while you play. The small, lightweight design allows you to easily pack the AC adapter along with your handheld system for a convenient back-up power source. Nintendo is the acknowledged worldwide leader in the creation of interactive entertainment. Nintendo manufactures and markets both hardware and software for its popular home video game systems.