OTVIAP D1 Mini Single Lithium Battery Charging Board Boost Charging Module

Feature: 1. You can use the D1 mini without a usb cable it s really wireless now. 2. Place the D1 mini anywhere using this charging pad and lithium battery. 3. When the battery is exhausted you don t need to unplug the battery just use the USB port to charge. 4. Simply connect the lithium battery to this board and use it as a power source for the entire D1 Mini system. 5. Made of fine material with good workmanship high quality and stability. Specification: Item Type:Battery Shield Size:2.7 x 2.5cm / 1.06 x 0.98in Connect to Lithium Battery:3.3~4.2V Normally Charing Port:5V Normally Green LED: Light up after charging is completed Red LED: Lights up while charging Package List: 1 x Battery Shield 2 x Pin Header