HP F1466A Replacement Battery by Amstron is designed for use with HP Omnibook 4100 models. 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 with you without sacrificing performance and productivity with Amstron brand HP laptop batteries. • Chemistry: Li-Ion • Ratings: 10.8 Vots 4500mAh