I do this with electrical appliances that I need ready to go but may not be used often, my hand-held Garmin GPS unit for instance. It's a good little hack to employ and if you've ever lost an appliance due to battery corrosion one you'll remember to do.
A great post and thanks for putting it in my community. This is exactly what this community is for.
A dab of the grey grease used for connecting aluminium and copper wire will protect the contacts in portable gear, without interrupting the connection like common grease can.
Informative post, with good content!
👍💗🤠