This rechargeable lithium battery mod gives new life to your Gameboy Advance. With a 1800mAh capacity, it provides longer play time than standard batteries, allowing you to enjoy your games from the palm of your hand for hours on end. Installing is simple, just remove the back cover, cut out the post in the center of the compartment, and replace the original batteries with this mod. Now you can recharge via USB-C, eliminating the cost of disposable batteries. The USB-C port is tucked discreetly away, preserving the classic GBA design while unlocking modern conveniences. Lightweight yet powerful, this battery holds a charge for weeks when not in use. Extend the journey with your favorite GBA titles today without worrying about battery life or waste.