Rechargeable Battery for solar lights [ BATTERY APPLICATIONS ] - Solar Lighting, Home Security Systems, Digital Cameras, Mobile mouse or keyboard, GPS, Digital calipers, calculators, electronic clocks,medical equipment, measuring instrument, sensors, radio transceiver, and many other electronics. [ HIGH QUALITY ] - Long lasting capacity of 1000 mAh, recharge life of more than 1000 times, charging time of 6 hours for full charge, 3.2 volts 1000mAh Lithium Iron Phosphate LiFePO4 18500 size [ GREEN ENERGY ] - Energy efficent and environmentally friendly. Perfect for Solar Lights [ SPECIFICATIONS ] - 3.2 volt, 1000mAh, Lithium-Iron Phosphate LiFePO4, Height:1.993in, Diameter: 0.