aw makes 14250s, two of which make a 14500, but they're 3.7V each so you'd need an hv atomizer. with this setup, the battery life is even more pitiful than the 10440, but if you want a quick hv jolt...that's the best aw has right now. there are non-aw lifepo4 14250s available as well, these are 3V batteries, safer chemistry, no real need for an hv atty, but again the size seriously limits the battery performance.