Electric drivetrains operate at more than 80% efficiency, typical ICE drivetrains maybe 30%. So for a given power requirement, the ICE will be wasting close to 10x the energy as an electric - and most of that is heat.
Another way to think about it is how hot stuff gets - I would be very surprised if any components in an electric drivetrain get much above 120,130C, something like that. How hot do exhaust headers get? Hundreds of C, maybe close to a thousand? That difference in temperature is what's needed to dissapate the 10x greater energy waste.
They do get hot when you push them hard though, I heard the Zeroes will overheat quickly and cut power.
The Empulse will cut off regen when the battery temp get's to around 128F.
It won't charge the battery in cold weather also '
Repeated hillclimbs with not much wind can overheat the components also. My light bee's controller overheated after this climb.
Electric don't like extreme temps that's for sure, not too hot and not too cold.
Zero bikes don't put out any heat, it gets absorbed by the potting of the battery.
This is, thermodynamically speaking, nonsense.
It would be dependent on what is cooler the ambient air or the potting. Heat always moves from hot to cold. +80F day and a fresh cold battery from garage....
There’s no way these will run in India then!