Originally Posted by Q Junkie
I was just wondering if these controllers can be powered by a slightly higher DC voltage such as 14-18 volt?
no. it is designed around 12VDC.
We prefer Li-Battery, portable and safe compared with 110CVAC. Especially when you have kids or pets around.
There are 12VDC 4 a.h Li batteries on eBay, which is under $10, and mail cost under $10. It powers my 12"x16" grill size offset at 225F for 10+ hours