Replacement battery fits 5 BLU compatible models. Specifications: 2900mAh, 3.8V, Li-ion. Compatible with: Energy X, E010Q, BOWAY U11, Energy X Plus, E030US. Replaces: BOWAY BP-401B, BLU C826604400L. BLU replacement battery designed for Mobile/SmartPhone devices. A direct drop-in replacement for the original battery.