switch size 35 battery to 51R and save 10 lbs - Drive Accord Honda Forums | radio-pro.ru
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post #1 of 16 Old 06-10-2012, 12:26 AM Thread Starter
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switch size 35 battery to 51R and save 10 lbs

i think the PZEV i4 uses size 35, my factory battery was marked 440 CCA.

i ordered the smaller battery bracket and bought a Costco 51R, which is oddly marked 500 CCA.

the original size 35 battery weighs ~35 lbs, the 51R weighs ~26 lbs.

I am not quite sure why the smaller, lighter 51R battery is rated so much higher than the OEM size 35.
The car starts fine obviously but i am in socal and the weather is great.

Just a quick tip if you want to reduce weight if you are replacing the battery anyways.


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post #2 of 16 Old 06-10-2012, 06:22 AM
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This is not a place to try and save weight...go bigger and heavier...at least 600 cca...trust me.



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post #3 of 16 Old 06-10-2012, 06:32 AM
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Smaller? My piece of crap OEM battery didn't last 60k miles. No way. I upgraded to the larger V6 battery.

Rather have a car that cranks and works than be the guy who can say "Yea, my battery is smaller than yours"
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post #4 of 16 Old 06-10-2012, 08:47 AM
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its because not all manufactuers make everything equal.

i upgraded to the bigger size as the v6s but i got a duralast gold battery rated at 900 cc.

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post #5 of 16 Old 06-10-2012, 09:02 AM
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I'll do ya one better: I can lay off the Diet Coke and loose 20lbs!

BTW, there's only something like 3 battery manufacturers in the US......so no matter what the 'name' is, they're more than likely all made by the same company.

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post #6 of 16 Old 06-10-2012, 11:32 AM
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Battery manufacturer doesn't make too much of a difference ..it's the size that matters ....the batt sizevHonda puts in these cars is just terrible ...it's made for a tractor or Gold wing motorcycle . Replaced mine 2 weeks after delivery, the batt makes a great batt to bench test 12v stuff, nice and small....


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post #7 of 16 Old 06-10-2012, 11:50 AM
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I have a group 35 that weighs 31.7 pounds and has 910 cranking amps. I definitely recommend better batteries than what Honda provides!


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post #8 of 16 Old 06-11-2012, 07:09 AM
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I just put in a DieHard Platinum Automotive Battery - Group Size 35 that weigh 50 lbs. I guess I need to exercise to loose weight.

By the way, it fits perfectly with a flatten of the two fingers that hold the old half-sized battery.

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post #9 of 16 Old 06-11-2012, 08:15 AM
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Quote:
Originally Posted by outersquare View Post
i think the PZEV i4 uses size 35, my factory battery was marked 440 CCA.

i ordered the smaller battery bracket and bought a Costco 51R, which is oddly marked 500 CCA.

the original size 35 battery weighs ~35 lbs, the 51R weighs ~26 lbs.

I am not quite sure why the smaller, lighter 51R battery is rated so much higher than the OEM size 35.
The car starts fine obviously but i am in socal and the weather is great.

Just a quick tip if you want to reduce weight if you are replacing the battery anyways.
I saved 15lbs on removing, hood gas struts, rear head rests, rear center belt, air resonator and incompetent CAI inlet . I kept my heavy battery as I paid only $10 for an I4 hood rod, rod clip and grommet.

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post #10 of 16 Old 06-11-2012, 08:24 AM

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Quote:
Originally Posted by Metal Metalic View Post
I saved 15lbs on removing, hood gas struts, rear head rests, rear center belt, air resonator and incompetent CAI inlet . I kept my heavy battery as I paid only $10 for an I4 hood rod, rod clip and grommet.
personal preference, but i love the hood struts and the feature loss for minimal weight reduction seems a step backwards. i can't imagine feeling any gains from 15 pounds - a full tank would negate this savings by far.

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post #11 of 16 Old 06-11-2012, 08:31 AM
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Quote:
Originally Posted by DOOM View Post
personal preference, but i love the hood struts and the feature loss for minimal weight reduction seems a step backwards. i can't imagine feeling any gains from 15 pounds - a full tank would negate this savings by far.
Extreme cold temps make them useless after time. A hood rod has never let me down, or should I say my hood. :o)

Hood struts weigh at least 3x as much as a hood rod and need replacement time to time. I just saved over $50.00 for the life of my car.

Also 15lbs is just the tip of the iceberg, if looking to remove weight. I just wanted to show that small items that are often over looked can add up.

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post #12 of 16 Old 06-11-2012, 08:33 AM
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Quote:
Originally Posted by Accordroch View Post
I just put in a DieHard Platinum Automotive Battery - Group Size 35 that weigh 50 lbs. I guess I need to exercise to loose weight.

By the way, it fits perfectly with a flatten of the two fingers that hold the old half-sized battery.

Exactly what you should do instead of buying all the v6 batt holder stuff


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post #13 of 16 Old 06-11-2012, 06:54 PM
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My PZEV I4 also came with Group 35 and when the time comes I will replace it with the biggest 35 I can find. Those of you who wan to reduce weight, perhaps I can help, I am a Weight Watchers leader and have lost over 75lbs since buying my 08 Accord.

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post #14 of 16 Old 06-11-2012, 06:58 PM
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Quote:
Originally Posted by DOOM View Post
personal preference, but i love the hood struts and the feature loss for minimal weight reduction seems a step backwards. i can't imagine feeling any gains from 15 pounds - a full tank would negate this savings by far.
I agree. That long metal rod that holds it up now can't weigh much less than these two light struts.


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post #15 of 16 Old 07-05-2012, 12:22 AM Thread Starter
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So far this is still good, no problems atleast in a fair weather region. The LX-S doesn't have many electrical accessories anyways.
It helps handling more than acceleration.

10 lbs doesn't seem much on the face of it, until you consider where that 10 lbs sits, on the very front end of the car, past the front axle, on a front heavy car.

I haven't bothered number crunching, but from a moment of inertia perspective, it's probably significant.

I'm 6' even and weigh 150 lbs, I don't have much weight left to lose.

BTW, the nissan GTR uses a 51R battery stock also. :P


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2007 SE cool blue sedan - p2r heatshield, k&n drop in, no resonator
2010 LX-S belize blue coupe - bored throttle body, ported runners, hps silicone intake, aem drop in, tsx rear sway bar, ktuner.com
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