Catalog > Internet of Things (IOT) Related Products > More Platforms 1A Lithium Battery Charging Boost Shield 1A Lithium Battery Charging Boost Shield BMT WEMOS D1 MINI BATT CHGR SHLD 1A LITHIUM BATTERY CHARGING BOOST SHIELD W/MICRO USB PORT FOR D1 MINI Call for Price 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features You can use D1 mini without usb cable, it’s really wireless now. Put D1 mini anywhere, using this battery shield and a lithium Battery. Boost, just connect lithium Battery to this shield, power supply for the entire D1 mini system. Specifications Connect to lithium Battery (normal 3.3-4.2V) Charging port (normal 5V) Green LED, lights when charging is completed Red LED, lights when charging J1: setting max charging current, 0.5A or 1A.