Nextel NNTN4655 Extedned Battery with Extended Battery Door NNTN5404 by Amstron is designed for use with Nextel i730, i733, and i736 cell phone models. Amstron cell phone 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 1400mAh Capacity • Warranty: 4 Years
