WeMos D1 Battery Shield Charger

This WeMos D1 Battery Shield Charger provides a means of powering your WeMos mini, or WeMos mini Pro from a single cell (3.7V) lithium battery. The shield contains a DC-DC converter to step-up the batteries 3.7V to 5V supplying your WeMos mini and shields with up to 1A of power. When the battery is depleted simply plug the shield into a USB power source using a mini USB cable and it will automatically recharge the battery. Two LEDs on the shield indicate when the battery is charging and when charging has completed.

Specification:

• Charging Voltage: 10V MAX 5V Recommended
• Charging Current: 1A
• Lithium Battery Voltage: 3.3-4.2V
• Boost Power Supply: 5V (Max 1A)
• Dimension: 28 x 25 x 8 mm
• Weight: 5.5 g

Ports:

• XH2-2.54mm (Port 1): Connect to lithium battery (3.3-4.2V)
• Micro USB: Charging Port (5V)
• Green LED: Illuminates when charging is complete
• Red LED: Illuminates when charging is in progress
• J1: Sets the maximum charging current: 0.5A or 1A