Originally Posted by
CPH-Flyer
I'm good for the 110Wh battery. But as a thought experiment, for future flights what if I would like to take a 200Wh battery?
The TSA link states:
One spare battery, not exceeding 300 watt hours, or two spare batteries, not exceeding 160 watt hours each, are permitted in carry-on bags
So the TSA officially would allow a 300Wh battery for airline's that allow it. Meanwhile, the FAA follows JAL's guidelines of 160Wh limit:
My inquiry is specific to the real world process of airline approval.