Game Boy DMG CleanJuice Battery Mod Installation Guide

By Hand Held Legend | Published: 2026-10-23

Category: How-to Guides

Learn how to install the Game Boy DMG CleanJuice Li-Ion battery mod step by step, with common mistakes to avoid and tips for a safe upgrade.

Quick Answer

Install the Game Boy DMG CleanJuice battery mod by fitting the Li-Ion battery into the CleanJuice module, connecting the JST connector, and securing the module in place. Follow the steps below for a safe and reliable upgrade.

Why Upgrade to a Li-Ion Battery?

The original Game Boy DMG uses AA batteries, which drain quickly and add weight. Upgrading to a Li-Ion battery mod like the CleanJuice system gives you a rechargeable solution with a 2500mAh capacity, meaning longer play sessions and fewer battery swaps.

This guide focuses on the CleanJuice Original module, which is designed specifically for the DMG. The battery is a custom-made Li-Ion unit that fits the module, and it uses a JST connector for a secure electrical connection.

Important Considerations Before You Start

Before you begin, note that the CleanJuice battery is for the battery only—the module is sold separately. Make sure you have the CleanJuice Original module installed in your DMG before proceeding.

Also, the battery uses a JST connector XL size, which is available separately if your module doesn't include it. Check your module's connector type to ensure compatibility.

Working with Li-Ion batteries requires care: avoid puncturing, bending, or shorting the battery. If you're not comfortable with electronics, consider seeking professional help.

Installation Steps

Gather Your Tools and Parts: You will need the CleanJuice Original module (already installed in your DMG), the CleanJuice Li-Ion battery, and a small Phillips screwdriver. If your module uses the XL JST connector, ensure you have that cable on hand. Check that your module's connector matches the battery's JST connector before proceeding.
Power Off and Open the Console: Turn off your Game Boy DMG and remove any game cartridge. Use the screwdriver to remove the six screws on the back of the console. Carefully separate the back shell from the front, keeping the ribbon cables intact. Keep track of the screws and their locations; they are not all the same size.
Disconnect the Old Battery or Power Source: If you have an older battery mod, disconnect its connector from the module. If you were using AA batteries, remove the battery contacts if they are in the way. Ensure no power source is connected to the module. Make sure the module is completely disconnected to avoid short circuits.
Connect the New Li-Ion Battery: Take the CleanJuice Li-Ion battery and plug its JST connector into the module's corresponding port. Ensure the connector is firmly seated and the polarity matches (red to red, black to black). Double-check the connector orientation; reversing polarity can damage the battery or module.
Secure the Battery in Place: Place the battery into the designated compartment in the back shell. Use the provided adhesive or a small piece of double-sided tape to keep it from shifting. Make sure no wires are pinched or stressed. Ensure the battery sits flat and does not bulge against the shell when closed.
Reassemble and Test: Carefully align the front and back shells, then replace and tighten all screws. Power on your DMG to verify the battery is recognized. Charge the battery fully before your first extended play session. If the console doesn't power on, reopen and check the connector and polarity.

Product Facts

Game Boy DMG CleanJuice Original Li-Ion Battery 2500mAh: This is a quality custom-made Li-Ion battery with 2500mAh capacity, designed to fit the Game Boy DMG CleanJuice Original module. It uses a JST connector (XL size available separately). The 2500mAh capacity provides extended playtime, and the JST connector ensures a secure and reliable connection to your CleanJuice module.
Game Boy DMG CleanJuice Original Li-Ion Battery 2500mAh