I’ve got an 850mAh LiPo (https://www.sparkfun.com/products/13854) hooked up to a charger circuit (https://www.sparkfun.com/products/10217) and 3V voltage regulator (https://www.sparkfun.com/products/526) to power a Gameboy Advance (AGB-001). I don’t quite understand why the battery drains so quickly when the unit is off (seems to last only a few days to a week maybe). I’m able to power on other natively LiPo-powered units like the Gameboy Advance SP or Gameboy Advance Micro just fine after months of being stored. Any thoughts?
Is there something about the voltage regulator that would cause this? I’ve seen other Gameboy battery packs for sale (e.g. https://www.retromodding.com/collections/gameboy-advance/products/gameboy-advance-rechargeable-battery-pack?variant=2565317361697) that have a switch to flip when storing for long periods of time, though I’m not sure if it’s to prevent drain.