Specifications:ManufacturerBasenCapacity3500mAhVoltage3.7VStyleFlat topContinuous current10A+Max.pulse current30ASizeDiameter: 18.09mm; Length: 65.13mmFeatures:1. Quality Assurance. Expolsion proof design with high strength stianless ,When cells get short-circuit, quickly release internal exhaust gas to avoid battery expansion and danger.2. Stable Voltage. Battery power supply is stable,there will be no unstable current,which can effectively prevent damage to the equipment.3. Low Self-discharge. Low self-discharge technology is adpoted to effectively reduce the natural drain of electricity.Package included:2 x 3500mAh 18650 Battery1 x Plastic Case