lithum-ion is misspelled. Currently, five questions are tagged with this misspelled tag.
I propose two solutions:
Option 1: Burninate lithum-ion.
Just use the more general battery. Are different battery technologies too localized?
Option 2: Add tags for different battery technologies.
On the other hand, it might be useful to make tags like
After some browsing, I've seen multiple questions in which the question or answer is ambiguous because the battery chemistry isn't clear. (Lithium ion's needs are different from nickel-metal hydride's.)