Acer BTP-42C1 Battery by Amstron is designed for use with Acer TravelMate C100, C102, C104, and C110 Series. Amstron Laptop batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility, and safety to exceed original equipment manufacturer specifications. Take your work on the road without sacrificing performance and productivity with Amstron brand Acer laptop batteries. • Chemistry: Li-Ion • Ratings 14.8 Volts 1800mAh Capacity