This 2-way 18650 battery holder is easy to use and can accommodate two 18650 batteries.
It features two charging input ports, micro-USB and USB-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. This new version also includes battery reverse connection protection and an acrylic bottom board.
The reverse connection protection prevents the module from being damaged 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 a convenient power supply for micro-devices and can be used for outdoor devices or DIY as a mobile power source for smart cars.
This battery holder can be used as a power source for microcontrollers, outdoor equipment and other low-power devices.
Note: The maximum current is 3A (however 3A should be considered a temporary peak current only), the output also depends on the quality of the 18650 battery. Avoid using batteries from different brands and try to ensure that the voltage of the two batteries is similar.
Interface
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
Battery Level
LED1
LED2
LED3
LED4
0%~25%
ON
OFF
OFF
OFF
26%~50%
ON
ON
OFF
OFF
51%~75%
ON
ON
ON
OFF
76%~100%
ON
ON
ON
ON
Charging
Battery Level
LED1
LED2
LED3
LED4
0%~25%
blinking
OFF
OFF
OFF
26%~50%
ON
blinking
OFF
OFF
51%~75%
ON
ON
blinking
OFF
76%~100%
ON
ON
ON
blinking
Specifications
Output current: 5V/2A, maximum peak support 3A; 3.3V/1A
Protection: with overcharge and over-discharge protection
NEW! Reverse-polarity protection
NEW! Acrylic base
Input: Micro-USB and USB-C input
Output:
USB output x1
3.3V output port x5
5V output port x5
LED indicator (blinking means charging, stop blinking means fully charged)
Package Contents
1x 2-Way 18650 Battery Holder
Batteries not included
Revision History
As of 23/04/2025 - we are stocking the updated version with reverse-polarity/reverse connection protection and an acrylic base.
Payment & Accreditations
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