Really should use something like this as well
https://www.amazon.com/daier-XH-M609-12V-36V-Disconnect-Protection/dp/B07RK3RZNH/ref=sr_1_4?dchild=1&keywords=low+voltage+cutoff&qid=1608146049&s=electronics&sr=1-4
That is why it is good to go with the all in one 12v adapter with LVC. Some batteries have low voltage protection built in but it is in the tool for other brands. If you run a drill battery much below 3V per cell it wont last long.