From the Pinephone wiki: "Battery: Lithium-ion, rated capacity 2800mAh (10.64Wh), typical capacity 3000mAh (11.40Wh) (nominally replaceable with any Samsung J7 form-factor battery)"
I guess they're sourcing unmarked Samsung compatible batteries which should be all protected, where should equals to 99.999%.
If that's the case, then there's no way malicious software or even firmware could damage it. The protection in those batteries is implemented hardware level; the chip contained in the cell will cut off its connection if it detects either an excessive discharge current (to avoid potential explosion), excessive voltage discharge (to avoid chemical degradation and subsequent charging attempts related dangers), excessive temperature (again to avoid explosion), excessive charging current (... explosion). They are all detected outside of system control, so no need for panic.
Define excessive discharge. In-battery circuit kicks in at 6-8A. Battery is specced for max 1.4A continuous charge/discharge current. With the safety margins in these things, it will probably take 2-3A continuously, too. But can it take 4A for 1 hour? Wanna try?
Also, there's no protection against excessive temperature in the battery protection circuit's specification, so not sure where you're taking your information from. It would be nice if people actually used the datasheets that are freely available, since Pinephone is mostly open HW, instead of proclaiming random generalities.
From the Pinephone wiki: "Battery: Lithium-ion, rated capacity 2800mAh (10.64Wh), typical capacity 3000mAh (11.40Wh) (nominally replaceable with any Samsung J7 form-factor battery)"
I guess they're sourcing unmarked Samsung compatible batteries which should be all protected, where should equals to 99.999%.
If that's the case, then there's no way malicious software or even firmware could damage it. The protection in those batteries is implemented hardware level; the chip contained in the cell will cut off its connection if it detects either an excessive discharge current (to avoid potential explosion), excessive voltage discharge (to avoid chemical degradation and subsequent charging attempts related dangers), excessive temperature (again to avoid explosion), excessive charging current (... explosion). They are all detected outside of system control, so no need for panic.