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Auto Battery Criteria #4607960
12/19/17 09:20 AM
12/19/17 09:20 AM
Joined: Sep 2002
Posts: 2,317
VA
Gebo Offline OP
Gebo  Offline OP
Joined: Sep 2002
Posts: 2,317
VA
I used to always judge a battery's quality by the amount of "CCA". The higher the "CCA" the better the battery. But I realize you need a high "RC" as well. Well, the other day I was informed that you can't have the best of both because going for the highest CCA will inhibit how high you can get the RC. And going for a really high RC would limit how high you can get the CCA. So raising one has an inverse effect on the other? I pondered....

The conclusion I took away from that conversation was that the key is to find the sweet spot balance between the highest CCA and the highest RC.

Is this malarky? Just trying to learn.


'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K
'07 Lex GX470 60K
Amsoil in all engines, transmissions and differentials

Re: Auto Battery Criteria [Re: Gebo] #4607976
12/19/17 09:43 AM
12/19/17 09:43 AM
Joined: Jan 2013
Posts: 1,920
Texas
WyrTwister Offline
WyrTwister  Offline
Joined: Jan 2013
Posts: 1,920
Texas
You are way beyond me . I buy a battery of the same " frame size " as OEM and 4 to 5 year warranty . ( I realize the warranty is largely a joke , unless the battery fails early . )

And shop by price .

Battery failed to start , on the work truck I drive , yesterday . Walmart battery . Installed January 2013 . Found out it had been on the shelf about 2 years ! :-)

It was a 5 year battery , I think . If not , a 4 year battery . Received less than $ 2 credit on the old battery .

I do not live in the extreme cold north . The temperatures often exceed 100F in the summer .

Best of luck to you , :-)


Wyr
God bless
Re: Auto Battery Criteria [Re: Gebo] #4607988
12/19/17 09:53 AM
12/19/17 09:53 AM
Joined: Feb 2014
Posts: 593
Margate England
Claud Offline
Claud  Offline
Joined: Feb 2014
Posts: 593
Margate England
If you don't have enough CCA to reliably start the engine then no amount of reserve capacity will be any use to you.

Claud

Re: Auto Battery Criteria [Re: Gebo] #4608003
12/19/17 10:12 AM
12/19/17 10:12 AM
Joined: Oct 2004
Posts: 8,061
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,061
Cincinnati, OH, USA
Originally Posted By: Gebo
I used to always judge a battery's quality by the amount of "CCA". The higher the "CCA" the better the battery. But I realize you need a high "RC" as well. Well, the other day I was informed that you can't have the best of both because going for the highest CCA will inhibit how high you can get the RC. And going for a really high RC would limit how high you can get the CCA. So raising one has an inverse effect on the other? I pondered....

The conclusion I took away from that conversation was that the key is to find the sweet spot balance between the highest CCA and the highest RC.

Is this malarky? Just trying to learn.
Believe higher CCA is related to plate thickness, and RC is more for deep cycle batteries. Plate disintegration seems to be the common failure on my starting batteries, but I haven't had a deep cycle fail that way yet.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: Auto Battery Criteria [Re: Gebo] #4608004
12/19/17 10:12 AM
12/19/17 10:12 AM
Joined: Jan 2008
Posts: 520
Richmond, BC, Canada
mechjames Offline
mechjames  Offline
Joined: Jan 2008
Posts: 520
Richmond, BC, Canada
You can have the best of both.
High CCA and High Reserve.
http://www.odysseybattery.com/

I have 10 years on a PC1750 and 8 years on a PC1500. Both are still maxing out my load tester past 1000cca every time I check em.
Expecting 15 to 20 year lifespan.

Last edited by mechjames; 12/19/17 10:13 AM.

86 Mustang 5.0L 170km - Amsoil XL 5w30 / Baldwin B2-HPG
14 Ram 1500 5.7 - Amsoil XL 5w20 / Baldwin B7443
98 Jeep ZJ 5.9 - Amsoil OE 10w30 / Baldwin B34
Re: Auto Battery Criteria [Re: Gebo] #4608008
12/19/17 10:13 AM
12/19/17 10:13 AM
Joined: Aug 2004
Posts: 4,706
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,706
Katy, Republic of Texas
CCA is the short high energy burst a battery can give for starting below -18C.
RC is how long the battery will last with a small load on it (25amps @ 25C till voltage drops below 10.5v).

It has to do to the number and thickness of plates inside the battery.
For higher CCA, manufactures put in more lead plates, but they are thinner. This gives the really high CCA, but at the cost of reserve capacity. It is also bad for battery life if you are in high heat areas. This is why many companies will sell a "northern" battery and a "southern" battery. The northern batteries have higher CCA, but a little lower RC.

If you really want to understand batteries better, go to www.batteryuniversity.com. More infor there than most need, but it is some really good reading.
THIS PAGE talks about plate thickness and how it works.


2012 Scion xB: QSUD 0w-20/CQ Blue/5k OCI
2002 Ford F150: GTX HM 5w-20/EcoGard Syn/1yr OCI
1994 Honda VT1100: Peak 15w-40/PSL/2500 mile OCI

Re: Auto Battery Criteria [Re: Gebo] #4608026
12/19/17 10:33 AM
12/19/17 10:33 AM
Joined: Oct 2014
Posts: 12,036
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 12,036
Idaho
The quality and how much material is in the battery will determine CCA and RC. To put is simply.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Auto Battery Criteria [Re: Gebo] #4608043
12/19/17 10:47 AM
12/19/17 10:47 AM
Joined: Dec 2006
Posts: 8,396
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,396
Illinois
When I can buy dual terminal group 78 batteries with a 5 year warranty, for less than $50... I don't tend to sweat the details.

https://www.ruralking.com/battery-650-cca-34-78-dt.html

I dropped one in a Ford V10 motorhome (because just about anything would fit in the tray). It sat ignored, all winter in an unheated tool shed, in northern Illinois (late November to early May).

Even after 5 1/2 months, and that amount of cold... without a Battery Tender or anything... that V10 cranked over and roared to life like it had been running the day before.

I'm putting these in everything that I can, while the price lasts.


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: Auto Battery Criteria [Re: mechjames] #4608058
12/19/17 11:00 AM
12/19/17 11:00 AM
Joined: Mar 2015
Posts: 5,100
Virginia
bbhero Offline
bbhero  Offline
Joined: Mar 2015
Posts: 5,100
Virginia
Great point mechjames. You can have the best of both but it will cost you a fair amount of money. X2 batteries made by Northstar run around $270. High CCA and high RC. 5 yr free replacement warranty. With use of a good battery charger these will last a very long time as well.


Nissan Altima 3.5 Coupe
Quaker State High Mileage 5w30 Purolator Boss 14610
"Treat your family like your friends and treat your friends like your family."
Re: Auto Battery Criteria [Re: Gebo] #4608111
12/19/17 11:39 AM
12/19/17 11:39 AM
Joined: Nov 2013
Posts: 1,928
Chicago, IL
EdwardC Offline
EdwardC  Offline
Joined: Nov 2013
Posts: 1,928
Chicago, IL
Another option is to use a larger battery than was originally installed, preferably one on the low end of CCA for the same size. That way, because it's larger, it'll have plenty of RC. And because the CCA is on the lower end (and still higher than the original batter), the plates are (hopefully) thicker and sturdier.

Re: Auto Battery Criteria [Re: Gebo] #4608131
12/19/17 12:02 PM
12/19/17 12:02 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline
Kev994  Offline
Joined: Aug 2016
Posts: 19
North Carolina
Get a battery at Costco. 42 month no question warranty. After 3 years get it tested, if it fails return it for a full refund and buy a new one.

Re: Auto Battery Criteria [Re: Gebo] #4608143
12/19/17 12:12 PM
12/19/17 12:12 PM
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
I've got a Costco battery in the Bronco going on 10 years. Works fine smile

Sometimes you get lucky. Only buy batteries from stores with high turn-over ...


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Auto Battery Criteria [Re: Gebo] #4608145
12/19/17 12:14 PM
12/19/17 12:14 PM
Joined: May 2009
Posts: 5,423
Canada
expat Offline
expat  Offline
Joined: May 2009
Posts: 5,423
Canada
Does size matter? If you can fit a physicly larger batter from a different group (all other things being equal) would it be likely to last longer?

Re: Auto Battery Criteria [Re: Gebo] #4608183
12/19/17 12:45 PM
12/19/17 12:45 PM
Joined: Jun 2002
Posts: 6,375
MI
doitmyself Offline
doitmyself  Offline
Joined: Jun 2002
Posts: 6,375
MI
This is a good thread. I, too, question at what point "bigger is better" CCA in the same dimensioned case becomes detrimental to battery life. I.E., higher CCA = thinner plates. North vs. south conditions surely must matter also.

In my case, my OEM battery is only 525CCA and it has started our small 4 cyl./few accessories car reliably even below 0F the past 5 winters. Will jumping to the next capacity of 640CCA reduce battery life noticeably due to thinner plates? Does bigger impede charging efficiency?

Re: Auto Battery Criteria [Re: mrsilv04] #4608319
12/19/17 02:50 PM
12/19/17 02:50 PM
Joined: Jan 2008
Posts: 10,802
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,802
OH
Originally Posted By: mrsilv04
When I can buy dual terminal group 78 batteries with a 5 year warranty, for less than $50... I don't tend to sweat the details.

https://www.ruralking.com/battery-650-cca-34-78-dt.html

I dropped one in a Ford V10 motorhome (because just about anything would fit in the tray). It sat ignored, all winter in an unheated tool shed, in northern Illinois (late November to early May).

Even after 5 1/2 months, and that amount of cold... without a Battery Tender or anything... that V10 cranked over and roared to life like it had been running the day before.

I'm putting these in everything that I can, while the price lasts.


+1, to the Exide batteries they use. Over five years on the one in the Matrix all for around $50 installed and still tests fine. Plus they now come with a longer warranty versus when I bought one. There's now a 2 year full replacement warranty on it. Plus their AGM battery is $129 for a Group 35. But I think they start right around $119 for some other sizes.

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