Power Board

We use a 2-Way 18650 Battery Holder. It has a USB output (5V). It also provides five 5V output ports, five 3.3V output ports to solder.

Operation

Power Module Top Power Module Bottom

ON/OFF via Push Button

The push button controls the module switch.

  • Make a single press to turn the module on.
  • A double-press will turn it off.

LEDs Current and Charge Indicators

  • When charging, LED1, LED2, LED3, and LED4 will blink until the batteries are fully charged.
  • During discharge, the LEDs represent the current intensity.

Mode Switch: Normal/Hold

  • In Normal mode, the board will auto shutdown when the current is too low.
  • In HOLD mode, it keeps outputting and does not shut down until the over-discharge protection is triggered.

Input Ports for Charging

  • 1 micro USB port
  • 1 USB type-C port

Output Ports

  • 5 output ports 5V/2A, to solder
  • 5 output ports 3.3V/1A, to solder
  • 1 USB output port

Specifications

Dimensions

Battery slots are compatible with 18650 Li-Ion batteries from 65 mm up to 67 mm.

Power Module Dimensions Power Module Dimensions

Safety and Limits

  • Overcharge protection
  • Discharge protection
  • The 5V output supports maximum peak current: 3A for short period of time. depends on the quality of the 18650 batteries.
  • Pay attention to battery polarity when installing. The + and - are clearly marked on the board, and the wrong direction might burn the module.