Batteries

69stang · Dec 30, 2017

My IH wheel tractor has 2 6 volt batteries wired positive to negative to crate 12 volts. If I put 2 12 volt batteries wired positive to positive and negative to negative I still have the 12 volts but does this double my cranking amps?

Moonlite37 · Dec 30, 2017

For all practical purposes, Yes

Oliver 500 Wa · Dec 30, 2017

Nope.

Wiring in series only doubles voltage not current. Wiring in parallel keep voltage the same but doubles the current.

Oliver 500 Wa · Dec 30, 2017

Sorry, should have said yes, instead of nope.

OldFarmTractor · Dec 30, 2017

It increases the available amps (current) but the starter and cables are what actually determine the needed current.

evilboweivel · Dec 30, 2017

Bob · Dec 30, 2017

If you are specifically asking if two 12 Volt batteries in parallel would provide double the cranking power of the two 6 volt batteries you now have in series, we would have to know the CCA ratings of both the original and the replacement batteries.

6 Volt batteries typically have larger plates and cells, and more CCA than a 12 Volt battery of similar physical size.

Paralleling the two 12 Volts doubles the CCA of ONE of them, but that number may or may not be greater than the CCA of the combination you are replacing.

Make sense?

SVcummins · Dec 30, 2017

Yes and your life will be better thereafter

Steve@Advance · Dec 30, 2017

Wondering if you really need all that cranking capacity.

What engine does it have? Gas or diesel?

69stang · Dec 30, 2017

Thanks, That's what I thought. I do not know the CCA of the 6 volt batteries. The parts store should be able to tell me and then I can decide if 2 12's would be better than the 2 6's. This is a cold blooded diesel. Thought more CCA's would help on cold mornings.

guido · Dec 30, 2017

Hello 69stang

Yes,

Guido.

jeffcat · Dec 30, 2017

Didn't someone a couple of days ago say to switch over to a synthetic blend or straight synthetic? Lets the engine crank over much easier in cold weather. Also nice big cables ALWAYS help things.

Tony in SD · Dec 30, 2017

Remember it?s not just CCA at the battery terminals, it?s power in watts (voltage X CCA) at the starter that counts. As has been said before, make sure you have big enough cables, both positive and negative. Also corrosion free connections including rust free at the starter to bell housing connection.

john *.?-!.* cub owner · Dec 30, 2017

The 2 batteries wired in parallel will double the cranking amps of on 12 volt battery, but whether or not it doubles the amps over 2 series batteries is dependent on the CCA of the series batteries. 2 800 amp 6 volts in series will give the same cranking power as 2 12 volt 400 amp batteries in parallel.

guido · Dec 30, 2017

Hello 69stang,

One more thing, you need at least 9.6V at the starter while the engine is cranking,

Guido.

MikeinKy · Dec 31, 2017

The 6 volt batteries on my IH tractors were 950 amp, I think, and the 12 volt ones I replaced them with were, I think were 500 amp. I cranks faster and therefore start quicker than it did with the 2 6's. I do not like batteries in series. If you do need to jump start it it seems easier with batteries in parallel.

Batteries

69stang

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Moonlite37

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Oliver 500 Wa

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Oliver 500 Wa

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OldFarmTractor

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evilboweivel

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Bob

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SVcummins

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Steve@Advance

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69stang

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guido

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jeffcat

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Tony in SD

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john .?-!. cub owner

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guido

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MikeinKy

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