3 ms·
A quick googling reveals nothing, but I wonder if a simple hardware mod could address this— basically, identify the voltage divider that's doing the measurement
by mikepurvis 5y ago
A quick googling reveals nothing, but I wonder if a simple hardware mod could address this— basically, identify the voltage divider that's doing the measurement across the battery and change out one of the resistors so that it "sees" 1.35V as 1.5V.
Most GBA battery mod posts are about people upgrading units to have built-in lithium packs, USB-C charge ports, etc etc.
- dragontamer 5y agoNope. Alkaline at 100% charge is 1.5V, at 50% charge it's 1.2V, at 0% charge it's .9V. NiMH at 100% charge is 1.35V, at 50% charge it's 1.35V, at 0% charge it's like 1.2V Totally different discharge curves. There's no simple circuit to convert between the two. ----- EDIT: For hard data, see: Energizer NiMH : https://data.energizer.com/pdfs/nh15-2300gl1220.pdf https://data.energizer.com/pdfs/nh15-2300gl1220.pdf Energizer Alkaline: https://data.energizer.com/pdfs/e91gl0320.pdf https://data.energizer.com/pdfs/e91gl0320.pdf
- mikepurvis 5y agoOh yeah, I'm aware that for any other chemistry you need an actual coulomb-counter to get a proper gas gauge. My suggestion was more about the specific matter of suppressing an unwanted and inaccurate low battery light. Though maybe instead of trying to mod the circuit board, it would be easier to just disconnect the LED itself.