Originally Posted by
PHLGovFlyer
I think the conflict comes from the separate specific statement about battery powered hand tools and their batteries being able to be checked (so long as the battery is detached). That statement isn't specific about the type of batteries so it creates a conflict with the other statement about Lithium batteries being prohibited in checked baggage.
It's not a conflict, it's just not optimal arrangement of the two separate rules so that you see both at the same time.
Check drill carry batteries is the correct solution.