My latest pickup - new in box InterAct Mobile Power GC Rechargeable Battery : r/Gamecube
Nintendo GameCube Rechargeable Battery Pak by Intec for sale online | eBay
Rechargeable Battery Pack for Game Boy Advance® SP - Tomee – Fun Box Monster Emporium
Amazon.com: Xbox One Controller Battery Pack, 2 1200mAh Rechargeable Battery Pack for Xbox one with LED/ 5FT Micro USB Charging Cable,Charge and Play for One/One X/S (Not for Xbox Series X/S Controller) :
SuperMegaPodcast — 4Gamers Gamecube Battery
Nintendo Gamecube Powerbase Battery from Retrogames
Amazon.com: GameCube Monitor (Indigo) : Artist Not Provided: Video Games
Junk GameCube Restoration - Nintendo Console Repair - YouTube
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Best Buy: Intec GameCube Battery Pak (Black) Black G5276
Intec Nintendo GameCube Indigo Rechargeable Battery Pak - Brand NEW 804926052750 | eBay
Nintendo GameCube Rechargeable Battery Pak by Intec for sale online | eBay
Amazon.com: Intec Rechargeable Battery Pack and Charging Station (For Intec Infinite Play Wireless Controller) : Video Games
Best Buy: Intec GameCube 5.4" Screen and Battery Pack G5274
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Amazon.com: Y Team Controller Adapter for Gamecube, Compatible with Nintendo Switch, Super Smash Bros Switch Gamecube Adapter for WII U/PC with 4 Port : Video Games
Buy GameCube GameCube Rechargeable Battery Pak (Black) by Intec | eStarland.com
Best Buy: Intec GameCube Battery Pak (Indigo) Indigo G5275
Closed the case! And it works, fully charged and been running it for 2 hours so far and more to go. From outside you wouldn't know it's now full of Lipos :) :
DuraPro 1Pc 3.7V 1200mAh LI 42B Li 40B LI42B Li 42B 40B EN EL10 EN EL10 Camera Battery for OLYMPUS U700 U710 FE230 FE340 FE290|camera battery|li 40bfor olympus - AliExpress
Retro-Bit RB-GC-3063 Prism HD Adapter for GameCube (Model DOL-001) - Walmart.com