Battery Thermal Management

It uses liquid cooling, heating or air. It affects charging speed and lifespan. It works even when parked in some cases. Cells age faster when hot and charge slowly when cold, so the system heats or cools them as needed. Many cars use the air-conditioning circuit or heat pump to cool the battery during fast charging and on hot days. Some cars warn the driver if the battery is too cold for fast charging and suggest preconditioning.

Coolant circulates through plates under the cells.

Coolant leaks need prompt repair. Extreme temperatures reduce performance.