ORIGINAL: Magne
We have used similar contraptions here in Norway for years.
Works a treat when flying off frozen lakes in the winter.
Magne
Yes, well it doesn't quite get that cold down here. The coldest I've seen here in Sydney on the Blue Mountains is -6C.
I used the warmer yesterday and it worked great. I ran it off the battery charger O/P from my Honda generator. The generator was also charging packs off the mains outlet.
Cheers,
Jason.