Dewalt (and a few others) already have Bluetooth-enabled batteries that can do this. You can take some of their "Tool Connect" batteries and disable them over B

Dewalt (and a few others) already have Bluetooth-enabled batteries that can do this. You can take some of their "Tool Connect" batteries and disable them over Bluetooth, or put them into a time-limited "lending mode" that kills the pack after X amount of time. https://www.dewalt.com/products/power-tools/connected-products/20v-max-tool-connect-5ah-battery/dcb205bt https://www.dewalt.com/products/power-tools/connected-produc...