12V battery specifications

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
Dxta
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Joined: Sat Feb 22, 2020 5:52 pm
Car: Infiniti M45 sedan base sport

12V battery specifications

Postby Dxta » Wed Mar 17, 2021 9:09 pm

How many amperage of battery is the right specification for my M45 2003 please? Can a 75A or a100A battery provide the necessary crank?


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Ilya
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Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
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Re: 12V battery specifications

Postby Ilya » Thu Mar 18, 2021 2:19 am

Do you mean CCA? Cold Cranking Amp? If so, 75 or 100 is VERY low. Most are 600-700.

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VStar650CL
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Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

Re: 12V battery specifications

Postby VStar650CL » Thu Mar 18, 2021 4:00 am

Dunno the answer, but the OP probably means aH and not CCA. I don't think Nissan specifies aH, I believe their specs are in CCA only.

TN_INFINITI
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Joined: Sat Aug 20, 2016 11:50 am
Car: M35X

Re: 12V battery specifications

Postby TN_INFINITI » Thu May 06, 2021 8:21 am

For an 18 year old car, I'd grab an inexpensive battery in size 24F. I've had good luck with WalMart batteries in my vehicles.

Dxta
Posts: 76
Joined: Sat Feb 22, 2020 5:52 pm
Car: Infiniti M45 sedan base sport

Re: 12V battery specifications

Postby Dxta » Sat Jun 05, 2021 11:53 am

I meant AH. Eg., 75AH, or 100AH. Kinda like the capacity here.

EniGmA1987
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Car: '06 M35 Sport

Re: 12V battery specifications

Postby EniGmA1987 » Mon Jun 07, 2021 7:54 am

I never even looked at AH before of a car battery. I figured they would be all around the same fort a specific size battery. I suppose that isnt really tue if the CCA can be different in the same size, means different material construction and so different capacity too.


I just looked up the battery I have which has been the best battery I have used so far. These are the specs on it:
Pulse (5 second) Hot Cranking Amps (PHCA) 1500
Cold Cranking Amps (CCA) 850
HCA 1250
MCA 1050
20Hr Nominal Capacity (Ah) 68
10Hr Nominal Capacity (Ah) 62
Reserve Capacity Minutes 135


So just based on the AH capacity of mine, I would think a 75AH battery should be plenty fine for your car? I cant imagine a 2003 has more electronics than a 2006 that I have.

Blessed
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Joined: Tue Oct 06, 2020 12:28 pm
Car: 2006 Infiniti M35

Re: 12V battery specifications

Postby Blessed » Wed Jun 09, 2021 1:29 pm

I have gone thru several batteries in my 2006 M35 trying to figure out the best CCA. They would last a month or so then I would have to charge them. I finally went with a group 34 battery with at least 750 CCA and I didn't have any more problems after this.


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