“I bought 2 of these for a winter camp in Tasmania, it got down to around 2 deg o/nite. The blankets were turned on to high 10min before bed, bed was lovely and warm. We both had to turn down to low as was to warm to sleep under. Awesome bit of gear.”
“Doesn't heat up as quick as 240v obviously but after 45min timer on high your sleeping bag is toasty warm. Definitely gets plenty hot enough! The high setting will chew through a ~5Ah battery jump starter pretty quick but if you have a dual battery setup larger than 50Ah should be fine provided you don't need it on all night”
