A handy plug and play external 190mah lithium battery for use with ATOM development boards. A single click of the physical button will turn on the power, and a double-click will turn it off. The TailBat just provides power, so it won\’t affect the original GROVE Connection mode and USB functionality. The battery can only be charged through the USB-C interface, not through the GROVE interface. For more information and for help getting started, click here Lithium Battery Shipping: Due to courier restrictions, this product can only be shipped within the United Kingdom. With this item in your cart, your shipping options will be limited and may cost more than our usual rates. Why? Features Adapted for M5ATOM form factor Plug and play Built in rechargeable lithium battery LED indicator Stick/C/V/M5Camera compatible Specifications Specification Parameter External port 1x GROVE LED 1x RED LED USB port Type C Battery capacity 190mAh Power management chip IP5303 Size 55 x 22 x 14mm Weight 10g Case material Plastic ( PC )