Exell LiFePO4 Size 18500 Rechargeable Solar Battery 3.2V 800mAhGreat economical choice for any device that uses rechargeable 18500 batteries. This lithium iron phosphate rechargeable battery is a good solution for replacing the batteries in solar lights. Rechargeable Solar light batteries eventually lose their ability to store energy and need to be replaced. Be sure to replace your rechargeable solar light batteries before they run out of energy. Replacing all of the solar light batteries at the same time is a good idea to keep all lights running at their full potential.Battery Specifications:Voltage 3.2V (nominal)Capacity 1500mAh rechargeable lithium batteryBattery Size: 4/5AAChemistry - Li-FePO4Height: 46.9mm (1.96in)Diameter: 18.1mm (0.71in)Weight: 1.1oz (0.07lbs)Applications:RC Racing CarAirsoft gunRC robotsE-bikeExcellent cells to build a battery packCHECK THE DIMENSIONS OF YOUR BATTERY BEFORE PURCHASING!WARNING: Use special caution when working with secondary lithium cells, they are very sensitive to charging characteristics and may explode if mishandled. Protective Circuit Board is required when making packs Make sure user has enough knowledge on secondary lithium rechargeable batteries in charging, discharging and assembly before use. Put the batteries in fire-proof container in charging Never leave batteries unattended when charging Do not put batteries on wood surface or carpet when charging We are not liable for damage if there is any modification of the batteries in form, shape or made into packs We are not liable for any damage caused by misuse or mishandling of theses secondary lithium batteriesSpecificationsBrand: Exell Output Voltage: 3.2V Amperage: 800mAh Chemistry: LiFePO4 Height: 1.96" Diameter: 0.71" Terminal Type: Button Top Country of Manufacture: China