Tabbed CR cells are hard to find in a large part of the world, these flex pcb's let you use standard CR cells insteadPlease note that CR2032 size retainers will only work with GBC housings
CR2025 - CR1616 - Nintendo GameBoy - GameBoy Advance Battery - Cartridge - GBA
Coin Cell Retainer Selection
WMYCONGCONG 30 Pcs CR2032 Cr2025 Coin Button Cell Battery Holder Case, Black
Coin Cell Retainer Selection
CR2Retainer Game Boy Cart battery retainer for CR2025/CR2032 cells - Share Project - PCBWay
Game Boy Game Battery Retainer by HDR – Retro Game Repair Shop LLC
MBC30 Flashcart, 4MB, FRAM, RTC
Batter Type: for CR2032 CR2025 ( battery is not included here), ideal accessories for DIY Arduino project or other electric PCB board Material
WMYCONGCONG 30 PCS CR2032 CR2025 Coin Button Cell Battery Holder Case, Black
MBC3 Flashcart Crystal Clear Edition, 2x2MB, FRAM, RTC
Game Boy Game Battery Retainer by HDR – Retro Game Repair Shop LLC
5pcs Cr2025 Button Lithium Manganese Batteries for X5 Game Boy GB Save Game + Tab & 3.8mm Security Screw Bit
CR2Retainer Game Boy Cart battery retainer for CR2025/CR2032 cells - Share Project - PCBWay
WMYCONGCONG 30 PCS CR2032 CR2025 Coin Button Cell Battery Holder Case, Black : Electronics