Replace old Ni-Cd Batteries of Boschmann Impact Wrench with LiitoKala Li-Ion Cells

[RetiredFAE]

I seem to recall that the pulsing runs, depending on the manufacturer, from 13 Khz to over 200 MHZ, with duty cycles running 25%to as much as 75%, not sure how much cooling effect that is going to have, but if that's the way they do it, it must work, although all my Dewalt lithium batteries for power tools , charged in the DeWalt charger that came with them, do get slightly warm after being recharged.

I never leave them in the charger unattended, and it sits in the middle of a large concrete floor, with nothing closer than 10 feet in any direction, and with a 20 foot ceiling, just to be safe.
We had quite a lithium battery fire near where I live a couple of weeks ago, shut down I15 into Vegas for 2 days.
I don't want one of those batteries going off in my shop, hence the charging location and only when I am present.