2 Batts on 1 Alt?

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mike swanson

Copper - Posts: 290

Joined: January 28, 2003

Location: United States

Posted: May 16, 2006 at 1:57 PM / IP Logged

Can you put 2 batts on 1 H/O Alt? without a isolater??

I dont think you shout but lemeno.

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djfearny2

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Posted: May 16, 2006 at 2:03 PM / IP Logged

NO YOU SHOULD ALWAYS ISOLATE. WITH EITHER BATTERY ISLATOR OR A HIGH AMP RELAY. if you dont isolate is some fashion when the car is off not being used the batteries will drain each other especially if they are two different makes models etc. or one has less voltage. preferable the rear or second one on the chain from alt.

Jon

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---coral springs florida---

mecp certification is not always needed. I have it and it has not helped me out at all. my experience out shines it.

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DYohn

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Posted: May 16, 2006 at 6:03 PM / IP Logged

While I do agree the batteries should match and be the same age, etc, the idea that an isolator is "always" necessary is BS. There is absolutely no reason to use an isolator unless you want to make sure you do not drain your primary battery if operating the vehicle with the engine off. Placing dual or any other combination of batteries in parallel will not harm anything as long as your alternator can keep up with charging them, especially if you always operate with the engine running.

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Master Asylum

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Joined: November 05, 2004

Location: United States

Posted: May 16, 2006 at 6:15 PM / IP Logged

Right now I'm runnuing some standard starter battery(Don't recall immediately what it was) and an Optima Yellow Top in the trunk no isolator. So far I have had no problems that I'd have noticed with anything, just curious, any warnings on that before hand?

1998 Monte Carlo w/

Eclipse CD8454

2xRockford 5.25" Power 2-way T152C

2xRockford 6"x9" Punch 3-way FRC4369

1xMemphis 16-MCH1300 5-channel

2xKicker 12" L5 Solobaric-2 Ohm

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2 Batts on 1 Alt?

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