[TRACKING] Battery flipping between charging and discharging / Draws from battery even on AC

[Charlie_6]

@nrp

This will have the opposite effect of what you are trying. As a lithium polymer battery with modern chemistry cycles and ages, if you attempt to continue to charge it to the original voltage from when it was new, aging will accelerate, rapidly. The battery and cell vendors characterize a max charge voltage curve over aging that maximizes cycle longevity, specifically optimizing for max charge level at 1,000 cycles. Ideally max voltage would be a smooth curve instead of being drops at certain cycle counts, but that isn’t something our battery vendor was familiar with characterizing and programming.

This is the reply from Framework stuff about battery voltage thing. From that we can infer the mainboard accepts and listens to the battery.

I think it’s technically possible to use NMC or other chemistry as long as the battery voltage fell within 12.0V to 17.8V(hard-coded according to published EC code on GitHub). Also, since the temperature is also communicated alongside voltage and current (the modified EC code by @James3 makes it possible for the users to observe them, the EC itself acquires the battery information from the BMS is unchanged). Therefore if the battery temperature limit is written correctly, we don’t need to worry about battery overheating.
The only exception is using a special battery that can be safely operated above 55°C. In this case the battery performance is reduced as the EC caps the temperature to 55°C