Heated grips while on maintainer ?

Just wondering if I can run my heated grips with the ATV off, but have my battery maintainer hooked up.
Mainly want to heat up the grips before I head out on cold mornings without having to start it and let it run for 10 mins. Live quite close to neighbours so the quicker I’m outta there the better.

I can get the info on my charger/maintainer if needed.

Thanks in advance mates,
One