This isn't related to your question but my Herekles gets hot pretty fast too. And yeah it def uses up a TON of juice. It wouldn't be that big of a problem except I chain vape all day so it getting hot is annoying. I hate metal drip tips so I replaced it with an acrylic one but when I had the one it came with it was always getting hot too. You might try getting the Starre tank, it's just as good as the Herekles in my opinion & it doesn't get hot anywhere near as fast. I like both tanks so I just switch them out every so often & that helps to not have to deal with the heat.