I found an awesome battery for the SP : r/Gameboy
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Backlit Modded Game Boy Advance Battery Life Test - YouTube
Amazon.com: Game Boy Advance SP Replacement Battery Pack for GBA SP (packaging may vary) : Video Games
Micro USB Rechargeable Battery Pack for Game Boy Advance — Retro Modding
Buy Game Boy Advance Game Boy Advance SP 3X Extended Life Battery Pack by Pelican | eStarland.com
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Game Boy Advance SP: Battery Adapter Kit - The giltesa's shop
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Best Game Boy Advance SP Battery Replacement - Nerd Techy
Game Boy Battery Life Results v1.0 : r/Gameboy
Game Boy Advance SP: Battery Adapter Kit - The giltesa's shop
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The Decline of Battery Life | Brain Baking
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The (Nearly) Definitive Nintendo Battery Test | WIRED
Question about battery life. My new SP fully charged has about 2 hours of battery life before turning on red low battery. Is this normal for this type of battery? : r/Gameboy
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New Battery Pack Replacement for Game Boy Advance SP
Amazon.com: OSTENT 850mAh Rechargeable Lithium-ion Battery + Tool Pack Kit for Nintendo GBA SP Game Boy Advance SP : Video Games
