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We no longer stock 4-Way 18650 Battery Holder, but here are current alternatives in Batteries.

4-Way 18650 Battery Holder

4-Way 18650 Battery Holder

Discontinued

A versatile 4-slot 18650 battery holder with built-in charging, power management, and multiple output ports. Accepts Micro-USB or USB-C charging input and provides 5V and 3.3V regulated outputs, making it a convenient portable power source for microcontroller projects, outdoor equipment, and DIY builds.

The holder includes overcharge and over-discharge protection to extend battery lifespan. A DIP switch selects between NORMAL mode (auto-shutdown when current drops too low) and HOLD mode (continuous output until over-discharge protection triggers). Four onboard LEDs indicate charge level and blink during charging.

Key Features

  • Dual Charging Input – Micro-USB and USB-C ports for flexible charging
  • Multiple Outputs – 5× 5V/2A ports, 5× 3.3V/1A ports, and 1× USB-A output
  • Battery Protection – Built-in overcharge and over-discharge protection circuitry
  • HOLD / NORMAL Mode – DIP switch selects auto-shutdown behaviour or continuous output
  • LED Power Indicator – Four LEDs show charge level; blink while charging, solid when full
  • Push-Button Power Control – Short press to turn on, long press (3 seconds) to turn off

Specifications

  • Battery Type – 4× 18650 lithium-ion (not included)
  • Charging Input – Micro-USB or USB-C
  • 5V Output – 2A continuous (3A max, not recommended for sustained use)
  • 3.3V Output – 1A
  • Output Ports – 5× 5V, 5× 3.3V, 1× USB-A

Ideal For

  • Portable power for Arduino, Raspberry Pi, and ESP32 projects
  • Outdoor and field electronics
  • DIY smart vehicles and robotics
  • Benchtop prototyping power supply

Package Contents

  • 1× 4-Way 18650 Battery Holder
Warning: Pay attention to battery polarity when installing — the + and − markings are clearly indicated on the board. Incorrect polarity will damage the module. Output current depends on the quality of the 18650 batteries used.
Maddy, co-founder of Little Bird

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