Features: Brand new and high quality Widely used in toy, remote control,massage, trimmers, razors, household product, etc. This power supply of powerful and stable cell is stable, which can effectively prevent the damage of the unstable current to the electrical appliance, and has good energy-efficiency. Constant 9v output can make the devices work more stable; Strong power. High capacity 6600mWh makes it long lasting and durable. Unique usb charging design, the rechargeable batteries built-in advanced type c port. You can charge the batteries with the type c cable, no need the traditional battery charger or adapter any more. Thanks to the advanced Li-ion technologys, the rechargeable batteries can be recharged 1000+times, saving thousands of batteries, reducing pollution and save money. Specifications: Material:Li-ion Battery Capacity: 6600mAh Real capacity: 1200mAh Voltage: 9V Size:Approx.4.8x2.6x1.6mm/1.89x1.02x0.63inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Rechargeable Li-ion Battery