Disconnect battery when not using?

CavemanCharlie wrote:

ktmrfs wrote:
most likely the reason the battery is discharging so fast is that in most trailers the radio is on "standby" at all times, and will draw enough current to discharge a battery or even a pair in a few weeks. Also their is some much smaller drain from a 12V CO detector and/or 12V powered smoke detector.

So.... either disconnect the battery, install a disconnect switch, or pull the fuse for the radio when in storage.

Yeah,

Though I was thinking that 3 weeks is not very long to completely drain the battery. Your car has a radio and the car will go 3 weeks without the battery going dead.

Maybe it would be easier to install a switch in the radios power wire and the propane detector rather then putting a switch on the battery.

And, Maybe you have a short somewhere else and should trace it down.

actually I did install a switch on the standby power to my trailer radio. we seldom use the radio or tv so it is a nice solution for us.

Now car radios are an entirely different breed. Car makers know cars will sit for days/weeks and should start right up. So..... they have a smart power down sequence to minimize battery drain. Part of that sequence is to have a car radio system that doesn't draw constant standby power, but instead will store required radio info in non volitile memory (memory that doesn't require constant power) and then shut down completely. Powered up it reads the memory and knows what it's state and stored stuff was set to.

RV radios don't do that, at least the ones I have seen. the memory system needs constant power or it looses it's brains.