Originally Posted by outsidein
A heated jacket liner uses up to 100w of energy in cold weather at highway speeds. Batteries are usually maxed out at 10watts.
This brings up a point: Check to see which liner will fit your power availability. You can get some that only draw 65w on high. They vary by manufacturer.
Though I run my 100w one off my dr350 fine, so long as I turn off my heated grips.