Sanyo DB-L20 Battery by Amstron is designed for use with Sanyo Xacti DMX-C1 and DSC-J4. Amstron Digital Camera batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility, and safety to exceed original equipment manufacturer specifications. • Chemistry: Li-Ion • Ratings 3.7 Volts 720mAh Capacity. • Warranty: 4 Years