Game Boy Advance SP Battery – Replacement Guide (Not Rechargeable)

The Game Boy Advance SP does not have a built-in rechargeable battery. It uses a replaceable lithium-ion cell (model AGB-003, 3.7V, 600 mAh).

How to Replace the Battery

1. Turn off the SP.
2. Slide the battery cover latch on the back and remove the cover.
3. Lift out the old battery (note polarity).
4. Insert a new AGB-003 or compatible replacement (e.g., generic 3.7V Li-ion with same dimensions).
5. Replace cover and latch.

Alternative: Rechargeable Battery Packs

Third-party packs (e.g., Nyko, Intec) replace the battery cover and add a charging port + internal Li-ion cell. These let you charge via AC/USB but add bulk. Quality varies—read reviews.

Important Notes

• Original Nintendo batteries are long discontinued; buy reputable aftermarket cells (avoid unbranded "fire hazard" cheap packs).
• The SP charges only via its AC adapter (AGB-002); there is no USB charging on stock hardware.
• Battery life: ~10 hours (frontlit), ~15 hours (backlit AGS-101) on fresh cell.