Add USB charging capabilities to your Game Boy with McWill USB charger for GAMEBOY COLOR. This inexpensive mod can help power your power hungry Game Boy Color IPS or TFT Backlight.
Replaces the DC jack on the Game Boy Color
Case modification required
After assembling the GBC you can use any LiPo battery in the size 14500. But I recommend LiPo batteries with protection circuit, because the LiPo battery will last longer then (only 1 battery is needed).