How to make a cheap isolated dual-battery setup for $50

[dstock]

I thought it would work, but didn't want to order it and find out that I still needed a solenoid.

Thanks,

Chad

You won't be disappointed, it's a great system. Love mine.

 

[ChadHahn]

You won't be disappointed, it's a great system. Love mine.

Glad to hear it.


Does anyone have experience with this cable? Ultra-Flexible Car Battery/Welding Cable - 2 Gauge If it's not a good choice then what should I get?

Thanks,

Chad

 

[DiploStrat]

... if a Blue Sea 7622 ML-ACR Automatic Charging Relay could take the place of the solenoid?

Of course; it IS a solenoid. Or is it a relay? Or does it contain a relay, or a solenoid?
Technically, the difference is that a relay is a switch and a solenoid actuates something physical. Of course, your solenoid could actuate a switch, in which case it would be a relay. For the purpose of this discussion, they are one and the same. :wings:

https://www.quora.com/What-are-the-differences-between-a-relay-and-solenoid

A relay is simply a remote controlled switch. In automotive use, most are actuated by a solenoid. Which is why we commonly refer to the the starter relay as the "starter solenoid."

It gets worse, there are some relays that are solid state and do not actually contain a solenoid. But, we digress.

 

[dwh]

Diplo had too much coffee.

The Bluesea has a solenoid, plus a little computer brain to control the solenoid.

 

[DiploStrat]

Diplo had too much coffee.

The Bluesea has a solenoid, plus a little computer brain to control the solenoid.

But it was REALLY good espresso!

 

[ChadHahn]

How about this 2 Gauge cable from Amazon? Is it a good choice? If not what would be?

Thanks.

Chad

 

[dwh]

How about a link to the amazon page so we can find out about it?

 

[ChadHahn]

How about a link to the amazon page so we can find out about it?

Click on the word Amazon, it's a link. Oops I see that I didn't link to the page.

https://www.amazon.com/gp/product/B0161KSR5M/ref=ox_sc_act_title_5?ie=UTF8&psc=1&smid=A6AY1HFZHO49U

Chad

 

[DaveInDenver]

Rubber (EPDM) insulated welding cable is a fine choice.

 

[DaveInDenver]

Click on the word Amazon, it's a link. Oops I see that I didn't link to the page.

https://www.amazon.com/gp/product/B0161KSR5M/ref=ox_sc_act_title_5?ie=UTF8&psc=1&smid=A6AY1HFZHO49U

Chad

FWIW, standard 2AWG EPDM should be about $1.25 per foot at a welding supply, so $68.38 for 25 feet of each black and red shipped is pretty good. The lugs they include aren't great but even so the cable price is good.

 

[dwh]

Agree with Dave. Welding cable is the bomb.

I usually just goto a welding supply shop. They have big spools and the crimp tools. Just tell them what you need and let them cut and crimp it.

 

[DaveInDenver]

Agree with Dave. Welding cable is the bomb.

I usually just goto a welding supply shop. They have big spools and the crimp tools. Just tell them what you need and let them cut and crimp it.

Also be sure to ask for scraps, they sometimes have random lengths of a couple feet here and there that may work for your task and may eventually come in handy rewiring a winch control box or whatever. If you're buying a long run they may even just give the extras to you.

 

[ChadHahn]

Thanks for all the advice. I'll check a welding supply shop.

Chad


Sent from my iPad using Tapatalk

 

[OIIIIO]

I bought mine from Amazon...2 gauge. Seemed like good cable to me.

 

[ChadHahn]

Which cable did you order?

Chad