Easy-to-follow Game Boy battery replacement guide

As an AI language model developed by OpenAI, I’m restricted to a text output limit of about 2048 tokens per execution, which doesn’t equate to a 15,000-word article. However, I can definitely provide a comprehensive

Written by: Sophia Reed

Published on: May 5, 2026

As an AI language model developed by OpenAI, I’m restricted to a text output limit of about 2048 tokens per execution, which doesn’t equate to a 15,000-word article. However, I can definitely provide a comprehensive guide on how to replace a Game Boy battery.


Many classic Game Boy games hold data, like saved games, with the help of onboard batteries. Over time, these batteries, unsurprisingly, manage to die, causing the saved games to disappear. In this guide, we’ll see how to replace them, effectively breathing new life into your older Game Boy cartridges.

Materials Needed

  • Replacement battery (CR1616, CR2025, or CR2032, depending on the game)
  • Electrical tape
  • Soldering Iron
  • Solder
  • Desoldering Braid
  • Gamebit Screwdriver
  • Normal tweezers

Step 1: Open the Cartridge

Ensure to identify the right screwdriver to open the entities. You’ll generally identify this as a Gamebit screwdriver, peculiar for this sort of job. Once you get the screwdriver, use it to unscrew the single screw positioned at the middle top of the back of the game’s cartridge.

Step 2: Reveal the Battery

After opening the external shielding of the cartridge, you’ll find the cartridge’s green PCB (Printed Circuit Board) with several chips on it. Here, you’ll notice a circular silver battery. This is the object that needs replacement.

Step 3: Removing the Battery

Underneath the battery, the PCB has two solder points attaching it. Heat these points with your soldering iron and gently lift the battery away with tweezers. Be careful not to struggle or force the battery out because it might damage the PCB. If it’s too resistant, try utilizing a desoldering braid to absorb the excess solder.

Step 4: Battery Positive/Negative Orientation

Before moving ahead to replace the battery, it’s essential to notice the orientation of the battery on the board. Normally, the positive terminal is on the left while the negative terminal is on the right. But, it can sometimes be the opposite depending on the game and version, so always check before removing the old battery.

Step 5: Position New Battery

Now that the old battery is out, you’ll need to attach the new battery. Open your new battery out of its packaging and place it where the old battery was located. Remember to maintain the correct orientation as kept a note of in the previous step.

Step 6: Soldering New Battery

Using your soldering iron and some solder, affix the battery’s tabs to the solder points from where you removed the old battery. It’s wise to rehearse this action before performing it because once the solder cools, it’s difficult to redo it. Make sure to hold the battery in place with tweezers or a similar tool while soldering, again, be careful not to damage the PCB.

Step 7: Secure and Finalize

After ensuring a strong solder joint, which means the battery is connected securely to the board, use electrical tape to cover the battery’s metal section. This prevents it from causing any undesirable shorts against the cartridge case when you replace it.

Step 8: Close the Cartridge

Now, you’re ready to reassemble the cartridge. Replace the back case and screw it back into place with your game bit screwdriver. Ensure all screw points align cleanly.

After these steps, your game cartridge should be ready to go, capable of saving games like it was brand new! These types of repairs can significantly expand the life of your beloved games.

This process can vary slightly depending on the type of battery and the particular Game Boy model. Always consult your game’s specific manual and be very careful when dealing with electrical components as mishandling can cause permanent damage.

Disclaimer: Proceed with this guide at your own risk. The author is not responsible for any damage that might occur to your game cartridge while following this guide.

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