Replacement battery fits 7 Xiaomi Yi compatible models. Specifications: 850mAh, 3.7V, Li-ion. Compatible with: Xiaoyi AZ13H, Xiaoyi YDXJ01XY, Xiaoyi AZ13-1, Ambarella A7LS, AZ13H, YDXJ01XY and 1 more compatible models. Replaces: Xiaoyi AZ13-1. Xiaomi Yi replacement battery designed for Digital Camera devices. A precise, secure fit you can rely on.