452e0d97_HAL_0_5_14_Specification__Description
[Key (type)] battery.remaining_time (int) [Mandatory] No [Description] 
Remaining time, in seconds, that the battery can provide power (if discharging) or the time until charged (if charging). This is an estimate and may be imprecise. This key is not present for invalid data.
HAL 0.5.14 Specification
Description