Battery disconnect

[bronconut73]

as I prefer a dedicated starting battery too and a battery dedicated to the fun things. My stereo alone is a huge drain on my single battery when the engine is off. I have a high amp alternator which in most cases is enough for a single battery but my relatives where big RVers and the second battery was used to power the accessories. Some fishing boats I've seen have 3 batteries.

If I add a winch, lights, and power my fishing rack a dual battery system is a good idea it seems. So looks like you have a yellow top (cranking) and a blue top (deep cycle) which is my thought too? Is the painless dual system a good one to use? I already have the Painless wiring harness installed.

Man...That Painless kit for dual batteries is awesome.
Fully automatic.
Has a three way switch in the cab that allows you to have both batteries getting charged by the alternator without "dueling battery syndrome" or dedicated to just one battery, or to jump the dead battery with the good battery, all from the driver's seat.
Very robust tough system. Looks like Wrangler makes the same one. Great decision.

 

[bmc69]

You probably recognize my cheap switches.
.

I tried using those for the mandatory battery disconnect switches in my Bronco racer. They proved to very unreliable and had to pony up for the much more expensive ones from Moroso.

Just my experience.

 

[kylakekevin]

I have always used the perco marine switches and they work great.

 

[bronconut73]

I tried using those for the mandatory battery disconnect switches in my Bronco racer. They proved to very unreliable and had to pony up for the much more expensive ones from Moroso.

Just my experience.

I predicted the same but have been lucky. I will upgrade one day.
Marine switches have more options and are nearly corrosion proof.
Pricey but eBay had good deals on them.

 

[ntsqd]

I see good electrical components kinda like buying new quality vs. buying remans. Buy good stuff, cry once, buy carp and cry every time you have to replace it.

You won't see the Painless dual/multi-battery stuff used on off-shore boats. That tells me that it isn't up to snuff. If you want stuff that works and will continue to work so that you only have to do the install once, buy good stuff to start with. Some of the Blue Water parts have remote capabilities. I get why that is attractive, but for me I want something that has to be very deliberate or I'll forget that I set it to some non-standard setting and leave it that way for way too long.

BTW, Hella makes good versions of that battery kill switch with a key. The gnarly one is rated 1000A continuous duty.