[【Wide Compatibility and Rechargeable】3000mAh high capacity 18650 rechargeable battery can be widely used for LED flashlights solar lights racing game controller emergency lights portable devices headlamps toys remote controls doorbells and other electronic devices. "【Product Parameters】This 18650 battery 3.7V standard voltage 3000mAh high capacity Size:2.64*0.7inch(67 * 18mm) .its a rechargeable battery BUTTON TOP Please confirm whether your device is suitable before purchasing." 【Pre-Charged】Each 3.7v lithium ion battery is ready to use and It can be recharged over 2000 times and keep 60% power after non-use for 2 years. 【Product Quality】Low discharge multiplier no memory effect. 3.7 volt rechargeable battery are tested under strict quality control standardssafe and reliable use.Premium Li-ion Cells For Longer Battery Life . 【Quality Service】1 month return and exchange if you have any questions about ours 3.7v battery please feel free to contact us we will provide you with professional solutions and satisfactory services as soon as possible.]