Replacement battery for Optic Sport. Specifications: 2000mAh, 7.2V, Ni-MH. Compatible with: Optic Sport, Optic PRO, Aurora 9. Replaces: Hitec 2606B-7E, Hitec 54124 triangle, Hitec 54128. Hitec replacement battery designed for Remote Controller devices. Provides reliable power for your device.