Dual batteries

[Steven Petersen]

There are advantages to 2 batteries in parallel. You get double the CCA’s. Much faster cranking and less wear and tear on the starter.

 

[L31MaxExpress]

There are advantages to 2 batteries in parallel. You get double the CCA’s. Much faster cranking and less wear and tear on the starter.

Never have had an issue with a single battery cranking up my 350 (now 383) or my 8.1. Factory gear reduction mini starters on both.

On my Express van the auxiliary batteries (2 x 6 volt Trojan deep cycles in series) are tied into the main battery via a 4 gauge cable and heavy duty relay. Use the deep cycles for a house battery for all the 12 volt accessories and my 3,000 watt inverter. The deep cycles are also connected to the deep cycles on the nose of my travel trailer with a forklift battery connector and 4 gauge wire. I have a 6,000 watt inverter in the travel trailer.

My Tahoe has a deep cycle battery on the driverside tray that is charged with its own 145a AD244 alternator. Runs an inverter and my music. Tahoe also has a forklift connector on the back bumper.

 

[b454rat]

couple nites ago it was -7 I think. My tahoe cranked over about the same as if it was 40. Get a good battery, good grounds, good starter, all you need.

I had a 97 that had the dual batteries. It was fully loaded, 454, maybe plow package, dunno. But one battery went to the starter, the other went to the junction block thingy on the driver side inner fender.

 

[Steven Petersen]

Does anybody happen to have pictures of a factory setup?

 

[SUBURBAN5]

I'm curious to about factory set up . But mine a 98

 

[df2x4]

I'm on the "one good battery is all you need" team. I run Odyssey Extreme AGMs in all of my vehicles and I've never had an issue getting anything started in negative temperatures. Even when one of them started failing load tests at seven years old it still started my Suburban in those conditions. I just replaced that one yesterday with a new model and my Suburban fires up with about a half-second bump of the key after sitting in the cold all night.

https://www.odysseybattery.com/products/odx-agm34-78-battery-34-78-pc1500/

 

[Knuckle Dragger]

Guy asks for pictures, gets a lecture LOL

 

[b454rat]

Prolly cause no one has pics

 

[SUBURBAN5]

If I had some I take em lol. But not sure if I want 2 batteries or not. Just like the benefit of having 2.

 

[Steven Petersen]

Guy asks for pictures, gets a lecture LOL

Glad somebody else noticed. I already know the more the better when it comes to batteries in parallel. That’s something you learn maintaining farm equipment and heavy trucks your whole life. I just want to see what it looks looks like before I make my decision.