I drive a Renault Zoe which has a heat pump and air-cooled batteries, and I can tell you that the Renault engineers were very protective of the battery. I've ne

I drive a Renault Zoe which has a heat pump and air-cooled batteries, and I can tell you that the Renault engineers were very protective of the battery. I've never had a problem with the cabin temperature, but it's clear that the HVAC system is sized and optimised for the batteries. For example, when charging cold batteries, the blower revs up much higher than it would ever go for the cabin.