Bob,
I wipe down my battery connection every day and wipe the outside of the battery with alcohol once a week.
My carts get the filling pulled and soaked in alcohol every week. I then replace the filling with new.
The attys, I vibrate them in PG when they start pulling hard. Then rinse them and blow them out real well and let the dry with the battery connection up.
I like to keep things clean and I have about 20 carts in rotation so a cart does not get used too much before I sterilize it.
Hope this help.