Hign-concerned Chemical : None Set Type : Batteries Only Type : Li-Ion Nominal Capacity : >3500mAh Model Number : 21V Brand Name : CHENJ Origin : Mainland China 100% Brand New and High Quality! Material:Plastic Size:As shown in the picture Color:Black Package Included: 1PCS Note: 1. Please note that the photo does not show actual size, please refer to Description for size details. 2. Please allow 5-10mm differences due to manual measurement, thanks. 3. Due to the difference between different monitors, the image may not reflect the actual color of the item. window.adminAccountId=230592249; Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin