2-Way 18650 Battery Holder

This 2-way 18650 battery holder is easy to use and can accommodate two 18650 batteries. It features two charging input ports, micro and type-c, and two output ports: USB interface output and port output. It supports 5V/2A and 3.3V/1A output, with five 5V output ports, five 3.3V output ports, and one USB output (5V). The module has overcharge and over-discharge protection to effectively prolong the lifespan of the 18650 batteries. The new version also includes battery reverse connection protection and an acrylic bottom board. The reverse connection protection prevents the module from being burnt due to battery reverse connection, and the acrylic bottom board prevents short circuit and damage caused by improper use or placement.

Combining with 18650 batteries, this module provides convenient power supply for micro-devices and can be used for outdoor devices or DIY as a mobile power source for smart cars.

Board Overview

Size Diagram

Interface introduction

The module is controlled by buttons. Pressing the button lightly will turn it on. In the on state, pressing the button twice within 1 second will turn it off. The DIP switch can be used to switch between HOLD mode and NORMAL mode. In NORMAL mode, the module will automatically shut down if the output current is too low. In HOLD mode, it will continue to output until the over-discharge protection is triggered. LED1, LED2, LED3, and LED4 indicate the current battery level. They will flash when charging and stop flashing when the battery is fully charged.

LED light status indication

Discharging

Discharging

Notes