ElectroVehicle batteries: safety issues
If you only want to read out parameters and operate the battery in standard conditions, so no short circuiting and other fun stuff, your normal lab is sufficient. Just do not wear any metal rings or stuff.

If you want to do more intensive testing, short circuiting, overchargning, temperature stability tests, an environment where the battery can burn down safely is more apprechiated.

My ex-employer had concrete bunkers for extensive testing, but normal development / testing was done in the normal office, without any special safety regulations.

Word of advice though:

Batteries burn at night. So whatever you're testing, do not store them over night in your office, but an outside location.

We used standard seafreight containers for storage.