NEW OFFICIAL OEM Nintendo DSi XL UTL-001 UTL-003 Rechargeable Battery
Amazon.com: CENIFENX DSi XL Battery, UTL-003 3.7V 1050mAh Replacement for Nintendo DSi XL, DSi LL Game Player Battery, with Repair Tool Kit (Not for Nintendo DSi NDSi DS Lite) : Video Games
Rechargeable Battery Pack for Nintendo DSi® Systems - XYAB
Replacement Battery for Nintendo DSi XL by Mars Devices - Newegg.com
Rechargeable Battery Pack for Nintendo DSi® Systems - XYAB