Running a Gigabyte U4UD, been having battery problems for months now, and the battery health only reports 50% capacity. Started playing Battlefront and got distracted and saw my battery looks like this now. Been doing this for 15 min, so either my battery is magical... or the Clevo design is flawed. Seeing how long she goes for on battery before it just dies.
I am not looking for tech support, just thought this would be funny.
I've not worked with batteries but I would assume there are two pins for voltage and ground, one temperature probe pin and or two pins for serial communication (probably I²C). If batteries would have had some sort complex handshake then it would have needed a corresponding UEFI patch so that system is able to refuse booting if the power level is too low. That's why I assume there would be no handshake (unless it's apple ofc).
I’d say the motherboard firmware checks if the battery through those two extra pins you correctly assume to have (there are generally 5 pins). And if the battery is not original it refuses to charge the battery.
You can always boot using power adaptor even without batteries and even on apple laptops 😇