alt Hacker News> battery-heated versions
all the ones I've seen when researching were lithium-ion from sketchy-looking brands, any brands you recommend?
> battery-heated versions
all the ones I've seen when researching were lithium-ion from sketchy-looking brands, any brands you recommend?
Any sold at a physical ski shop. You will make a face at the price. You will reconsider the sketchy ones for their price. But the ski shop ones will last significantly longer.