As said check with the TSA web site and your airline if in doubt.  But a few cautions...

Definitely don't try to fly with fuel of any kind. 

All spiky pole like things must be checked...trekking poles, tent poles tent stakes, knives.

Oddly zippo and disposable type lighters are allowed as carry on

https://www.tsa.gov/travel/security-screening/whatcanibring/items/disposable-and-zippo-lighters

Do not check your lithium batteries. They must be carried on.   This includes you battery bank, camera batteries, and anything internally rechargeable these days.  There may be some exceptions for things  with contained batteries...not sure so best to be safe  There are limits to the size and quantity which probably would not affect a backpacker...

You can only carry on small amounts of liquid or liquidy things.