Just get one that has outlets you can use. Set up a tent and power electric blankets inside your sleeping bags. Typical electric blankets run at 50 watts. So overnight at 8 hours of sleep you would only drain the battery by 0.4 kwh per electric blanket at most.
Just get one that has outlets you can use. Set up a tent and power electric blankets inside your sleeping bags. Typical electric blankets run at 50 watts. So overnight at 8 hours of sleep you would only drain the battery by 0.4 kwh per electric blanket at most.