NTR-003 Compatible Nintendo DS Battery
NTR-003 Li-ion Battery Pack for the Nintendo DS Game System.   Rechargeable Battery has Higher Capacity of 850 mAh for longer lasting power.  Offers up to 6 hours continuous game play for NDS software and approximately 10 hours for GBA games.  Ideal for holidays or longer game sessions.    3.7 Volts, 850 mA