Replacement battery for Cell Phone. Specifications: 1600mAh, 3.7V, Li-ion. Compatible with: Cell Phone. Replaces: Wireless Messenger Z2, Wireless Messenger Z2A, Z2, Zipit Wireless Messenger Z2, Zipit ZWM2-1230LI, ZWM2-1230LI. Zipit replacement battery designed for Cell Phone devices. Designed for long-lasting power.