What is the purpose of dc disconnect

[Dalorin]

All,

I'm seeing where the pd4045 and similar stations are sometimes wired with a dc disconnect that allows you to keep the battery charging while disconnecting all the dc circuits that head out of the fuse box. Why would you want this? I'm trying to understand the utility of doing this.

Similarly, I've heard of people putting a switch inline with the battery so that you can disconnect it from the station. If its on a charge wizard anyway it's not going to harm the battery to leave it connected the whole time you're on shore power right? So why do this?

All help is appreciated.

[MtnDon]

I like to be able to disconnect all loads from the battery when I place a trailer or other RV in storage. It is a positive method of disconnecting all loads, even the hidden loads that might slowly drain a battery. It could also be considered a safety item for when something is being serviced.

[glenpinpat]

My battery is under neath my bed and would be a pain to get at if I need to disconnect while working on the electrical system. My main disconnect is easily accessible. This is much like the main breaker in your house, power is still coming in but not going to the fuse panel allowing you to work on the electrical without disconnecting the wires from the road.

[Shadow Catcher]

As pointed out being able to shut off all power when you want to work on the electrics. In our case the solar panel and controller are not part of that as it goes directly to the battery and I will be installing Power Pole quick disconnects and new fuses. The big red switch is the cut off.

[Dalorin]

Thanks for the help everyone. I'm putting my battery in the tongue box so it should be easy to access. I think I'll forego the disconnect. Good information.