UPGRADE Toothbrush Replacement Battery for Braun Oral-B 49mm x 14mm Ni-MH
Material: (Li-ion Lithium Ion Battery). Internal resistance: within 50mΩ. AA 14500 3.7v 680mAh Li-ion Battery with Solder Tabs. Battery model: US14500VR2. 1 Li ion battery With Welding.