I found an awesome battery for the SP : r/Gameboy
Amazon.com: 3.7v 850mah Rechargeable Li-ion Battery Pack for Game Boy Advance GBA Sp : Video Games
Replaced that 2007 GBA SP battery. Went from 2h to 6h for 2$ : r/Gameboy
Amazon.com: Game Boy Advance SP Replacement Battery Pack for GBA SP (packaging may vary) : Video Games
Rechargeable Battery Pack for Nintendo Game Boy Advance SP GBA + Tool 713381897496 | eBay
Amazon.com: Gameboy Advance SP Battery Pack, 850mAh Replacement Rechargeable Lithium-ion Battery + Tool Pack Kit Compatible with Nintendo GBA SP : Video Games
Another Nintendo Console Has Gotten An Upgrade, But It's From 18 Years Ago | Nintendo Life
Amazon.com: OSTENT 850mAh Rechargeable Lithium-ion Battery + Tool Pack Kit for Nintendo GBA SP Game Boy Advance SP : Video Games
Extending The GBA SP's Battery Life With Inexpensive Battery Pack - RetroGaming with Racketboy
Switch Is Great, But The GBA SP Was The Pinnacle Of Public Transport Gaming | Nintendo Life
GBA SP Pelican battery still running strong after all these years. : r/Gameboy
Game Boy Advance SP Case Mod Adds Battery Capacity And Modern Interfaces | Hackaday
Gameboy Advance SP Powerful Battery Kit
Modded my IPS GBA SP and IPS v2 GBA SP with a 1200mAh Battery! : r/Gameboy
Amazon.com: Gameboy Advance SP Battery Pack, 850mAh Replacement Rechargeable Lithium-ion Battery + Tool Pack Kit Compatible with Nintendo GBA SP : Video Games
Buy Game Boy Advance Game Boy Advance SP 3X Extended Life Battery Pack by Pelican | eStarland.com
Amazon.com: Battery Replacement for Nintendo Advance SP, AGS-001, GBA SP Part NO AGS-003, SAM-SPRBP : Video Games
My original GBA SP still has charge after not using it for 12 years. : r/gaming
Best Game Boy Advance SP Battery Replacement - Nerd Techy
Nintendo Game Boy Advance SP Battery Replacement - iFixit Repair Guide
