[Drbrown]

I have two cars that sit outside during our northeast winters with temperatures down to zero or slightly below. Each has a battery minder on it and I leave them on all the time winter and summer when the cars are not being used. On average they draw only about 0.7 watts which might cost 10 cents a month. The newer of them, on an '84, has the unit mounted inside the engine compartment on the passenger side wheel panel with the plug dangling down in a chamber where it doesn't get wet. I can easily reach up under to connect a lead core. That battery is now about 12 to 14 years old. The other Walmart battery is about 8 years old. Both cars start nicely.