battery.parquet

battery.parquet has one row per battery per sample. It describes the charge and state of each battery.

Column	Type	Unit	Description
timestamp	int64	ms	The time of the sample.
battery_id	int32		The battery, see meta/battery.parquet.
battery_state	string		CHARGING, IDLE or DISCHARGING.
charge	float	J	The energy stored in the battery.
power_draw	float	W	The power the battery supplies.
energy_usage	float	J	The energy the battery supplied since the start of the simulation.
embodied_carbon_emission	float	g	The embodied carbon of the battery.