Does anyone have a way of assessing the UPS battery level of the ReTerminal E10-1? Battery level is an obviously critical feature of what is supposed to be a unit with UPS functionality. In searching online I was not able to find if a current/voltage monitoring IC such as the INA219 was included in this unit.
not sure if this helps bur for me, running raspian 64 bit, I see /sys/class/power_supply/bq25790-battery and bq25790-charger which seems to have data about the battery and the charger, respectively. For example ‘current_now’ is zero when running on battery and some other number when charging. How to interpret, I don’t know but you may be able to deduce from the “seeed-linux-dtoverlays/modules/bq24179_charger” code and the device PDF https://www.ti.com/lit/ds/symlink/bq25790.pdf. It would be nice to have some more easy to understand docs though.