Battery charge (percent)
Rough approximation of battery charge (opaque, percent)
Remaining battery level when UPS switches to LB (percent)
Minimum battery level for UPS restart after power-off
Battery level when UPS switches to "Warning" state (percent)
Status of the battery charger (see the note below)
Battery voltage (V)
Maximum battery voltage seen of the Li-ion cell (V)
Minimum battery voltage seen of the Li-ion cell (V)
Nominal battery voltage (V)
Minimum battery voltage, that triggers FSD status
Maximum battery voltage (i.e. battery.charge = 100)
Battery capacity (Ah)
Nominal battery capacity (Ah)
Battery current (A)
Total battery current (A)
Health status of the battery (opaque string)
Battery temperature (degrees C)
Maximum battery temperature seen of the Li-ion cell (degrees C)
Minimum battery temperature seen of the Li-ion cell (degrees C)
Battery runtime (seconds)
Remaining battery runtime when UPS switches to LB (seconds)
Minimum battery runtime for UPS restart after power-off (seconds)
Battery alarm threshold
Battery installation or last change date (opaque string)
Battery next change or maintenance date (opaque string)
Battery manufacturing date (opaque string)
Number of internal battery packs
Number of bad battery packs
Number of external battery packs
Battery chemistry (opaque string)
Prevent deep discharge of battery
Switch off when running on battery and no/low load
Switch off UPS if on battery and load level lower (percent)
Delay before switch off UPS if on battery and load level low (min)
Switch off UPS if on battery and load level lower (Watts)
See
https://networkupstools.org/docs/developer-guide.chunked/apas02.html#_battery_any_battery_details