Yes, there are tons. I used a
3000mAh one with a link in my FAQ. Now there are a few considerations to consider. Many just go for the biggest, badest battery they can find. You should work backward to cover your needs. First off, check the physical size as with these batteries capacity and size go hand in hand. You must also consider the charge time. The 800 mAh ones are full in under an hour whereas the 3000 mAh battery would take a good 3 hours.
So, for a day and evening worth, the 800 mAh battery is fine for most folks at 8-11 bowls.
For a weekend and beyond, a 2000 -3000 mAh would be perfect. Which is about the same as 3 good 18650 cells. It would last close to a week for many coming in at 30 - 40 bowls.
Doing the math the IH devices average around 80 mAh per bowl or 20 mAh per puff.
![Science :science: :science:](/i/s/science.gif)
The bottom line is to only get as big as you need to cover your travel time. A faster charging time can be nice too. Bigger is nice but not always convenient.
![Can of worms :worms: :worms:](/i/s/worms.gif)