5000mAh Li-ion Extended Battery with cover for Nintendo 3DS, N3DS, CTR-001, MIN-CTR-001 Replacement for: Nintendo CTR-003, CTR003 & C/CTR-A-AB Battery. Compatible with the following models: Nintendo 3DS CTR-001. 3.7V 5000mAh 18.5Wh Extended Life Lithium-Ion Battery. Includes Back Cover Factory Fresh Guaranteed Only When Purchased From Power-O-Matic