For sale is a fully tested and functional 3rd party in very good condition.
3.7V Battery Pack for Game Boy Advance SP. GBA SP batteries generally deteriorate after 300 charges. This battery pack lets you easily replace the degraded battery and get back to gaming! Mini screwdriver tool included is all you need to open the battery compartment.
All products sold by Best Retro Games include a 121 day warranty, free shipping and are fully tested and working.