Can You Take A Battery Pack On The Plane. If the battery is a spare - that is the battery is by itself and not contained in equipment - it must be in your carry-on baggage only. There are no restrictions on the number of dry cell batteries including AA batteries you can take on a plane either in your carry on or your checked bags.
If you want to take a drink along with your snack make sure it is less than n34 oz in one bottle. You can carry lithium batteries on the plane. Only restriction I found was that the battery must be under 100Wh.
Uninstalled lithium batteries ie ones not inside a device are prohibited from being in a checked bag and must be taken onto the plane in a carry-on bag.
For lithium-ion batteries a maximum of 2 not exceeding 160 Wh each are allowed in carry-on bag with airline approval. Except for spare uninstalled lithium batteries all the batteries allowed in carry-on baggage are also allowed in checked baggage. However we recommend that you pack them in your carry-on bag whenever possible. The TSAs Can I Bring search tool breaks it down for you.
