Fujitsu UN242S1-S1 battery by Amstron is designed for use with Arm, Gericom, Hyperdata, Sceptre, Systemax, Uniwill model N243, N244 series laptop and notebook computers. Amstron laptop batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. • Chemistry: Li-Ion • Rating: 14.8V 4000mAh Capacity