[SeaKing]

I had vehicle with all sorts of electronics, and if you parked it at the airport, it would have used a lot of battery when you got back say a week or two later. You might have to jump it with another vehicle or a jump box and once I just carried an extra battery.
I couldn't find out easily what was going on, so finally I started just taking the cable off the battery terminal and keeping a little wrench to do it with in the cab.
Then winter came and I left the vehicle at a northern airport in the winter and ice and snow built up on the hood and I had a hard time getting the hood up so I could re-attach the battery cable.
Having a little tech in my blood, I thought well I can put a relay in the line to the battery terminal and power that on and off from the cab with a toggle but then I would need a power source, and dah, dah, dah. Whoa!
Finally I got a simple disconnect with a handle, mounted it on a board and mounted that in the engine compartment, put it inline electrically with the battery terminal, connected a nylon cord loop to the handle so that if I pulled on one leg, it would disconnect, pull on the other it would connect. (Arranging that cord was the only hard part.) I put a very small hole with a gasket in the engine bulkhead to the cab to run the cord through and I was done. Had that for 3-4 years. I had thought I might lose the time on the clock, but it must have had a battery backup and when it came back on, it was always correct. When I sold the vehicle, I pulled everything out leaving no marks, plugged the gasket in the bulkhead with silicone and sold "a really great truck."

On an android phone, you can just pull the battery out until you want to use it, but I guess the tablets don't have removable batteries.