Replace batteries in the Game Boy Advance

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The Game Boy Advance runs on two standard AA batteries. That sounds simple — and it is — but after years in storage the battery contacts can corrode or oxidise. The GBA stops working even though nothing else is wrong.

Good news: cleaning corrosion or replacing contacts is one of the easiest jobs there is. You barely need any tools.

What you need {#what-you-need}

• Fresh AA batteries or rechargeable AA batteries (recommended)
• Cotton swabs — for cleaning corroded contacts
• Isopropyl alcohol (IPA) — removes oxidation residue
• Small flat-head screwdriver — optional, for stubborn dirt

Step by step

1. Remove the old batteries

Open the battery cover on the back of the GBA. Unscrew the small screw with a small Phillips head if needed.

Remove both AA batteries.

2. Check the contacts

Look at the metal contact points in the battery compartment. Do you see white, green or grey residue? That’s oxidation or corrosion.

3. Clean the contacts

Dip a cotton swab in isopropyl alcohol and rub over the corroded contacts. Light rust comes off easily. For more stubborn residue, carefully loosen it with a flat-head screwdriver or toothpick.

Let the contacts dry completely before inserting new batteries.

4. Insert the new batteries

Note the polarity: the positive (+) and negative (–) terminals are marked in the battery compartment. Rechargeable NiMH batteries work great and give the same play time as alkalines.

5. Test the GBA

Close the cover and turn the GBA on. The power light should glow green.

What if the GBA still doesn’t work?

If the contacts look fine but the GBA won’t start, it may be that:

• The contacts have come loose internally from the circuit board (requires soldering or replacement)
• The ON/OFF switch is dirty or damaged
• There’s another problem with the circuit board

In that case: see the GBA repair guide for further diagnosis.