Use your D1 mini without a USB cable by powering it through this lithium battery shield - it's really wireless now!
Simply connect a 1S lithium battery to the shield through the JST connector, and it functions as the power supply for the entire D1 Mini system. Charge the battery by plugging the MicroUSB connector into a 5V USB port of power supply, you do not need to unplug the battery to charge it.
Specifications:
Charging Voltage: 10V maximum, 5V recommended
Charging Current: 1A maximum
Lithium Battery Voltage: 3.3V - 4.2V
Boost Power Supply: 5V @ 1A maximum
Size: 28mm x 26mm x 8mm L x W x H
Connectors, Jumpers and Indicators:
PH2-2.0MM (Port 1): Connecta to lithium Battery (3.3V - 4.2V)
Micro USB (Port 2):Charging port (5V DC)
Green LED: Lights when charging is completed
Red LED: Lights when charging
J1: Sets maximum charging current, open = 0.5A, jumpered = 1A
Package Includes:
1x Battery Shield for Wemos D1 Mini
2x 8P 2.54mm pins