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#4809555 - 07/09/18 07:30 PM New Battery, 7 months old
2010Civic Offline


Registered: 12/06/14
Posts: 363
Loc: Minnesota
I need a new car battery so I went to Costco to see what they have. They have Interstate batteries for very good prices.

They had about 20 batteries of my size. Everyone of them was made in December of 2017. Do you think this is a problem being 7+ months old? You know they have never been charged or topped off in the last 7 months.

What are your thoughts? How many months is acceptable?
_________________________
2010 Honda Civic LX
Valvoline SynPower 5w-20 - Honda oil filter
54,061 miles

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#4809563 - 07/09/18 07:35 PM Re: New Battery, 7 months old [Re: 2010Civic]
mclasser Offline


Registered: 04/13/13
Posts: 2259
Loc: The Northeast
I'd pass. I don't buy batteries less than a couple of months old.
_________________________
2018 Hyundai Elantra VE -- 3K
2013 Honda Pilot EX-L 4WD -- 55K
2002 Honda Accord EX-L -- 210K


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#4809567 - 07/09/18 07:40 PM Re: New Battery, 7 months old [Re: 2010Civic]
Chris142 Offline


Registered: 06/05/03
Posts: 16966
Loc: Deplorable in apple valley, ca
My supplier let's them sit 9 months before they will replace them. I do check and charge as necessary every month.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
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#4809570 - 07/09/18 07:41 PM Re: New Battery, 7 months old [Re: 2010Civic]
2010Civic Offline


Registered: 12/06/14
Posts: 363
Loc: Minnesota
Yeah, I'm going to try a different store and see if they have newer stock.
_________________________
2010 Honda Civic LX
Valvoline SynPower 5w-20 - Honda oil filter
54,061 miles

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#4809580 - 07/09/18 07:52 PM Re: New Battery, 7 months old [Re: 2010Civic]
wrcsixeight Offline


Registered: 10/15/10
Posts: 1747
Loc: california
I'd prefer a 7 month old battery to have been resting in Minnesota, as opposed to South Florida. temperature increases self discharge. Resting discharged causes sulfation and loss of capacity

Doubt they ever top charge them. Bring a voltmeter, Hope to see 12.6v+.

They still give the warranty from date of purchase.

Good price, good warranty, I'd be tempted, but then I can bring the battery to 14.8 volts for as long as required for the specific gravity of the electrolyte, measured with a temperature compensating hydrometer, to max out on each of the 6 cells.

If the SG never got upto the 1.275 level, i would go as high as 16.2 volts.

if 16.2v could not return specific gravity to 1.275 on all cells, I would not expect a good lifespan from the battery and would warranty it within the free replacement period. Costco is good like that.

Expecting a vehicle to top charge such a battery is unwise as higher electrical pressure is required for longer to max out the specific gravity and dissolve the sulfation.

The degree of sulfation depends on just how much self discharge has occurred since the battery was put on the shelf, combined with its stat of charge when it was put up there.

In theory batteries ship fully charged.
In reality the electricity and time required to top charge batteries before they leave the factory eats into max profit, and thus he batteries do not leave the factory top charged.

All lead acid batteries always want to be fully charged, and kept cool, for maximum longevity and performance/reliability during that life.

If vehicles actually were designing charging systems with max battery life in mind, they would insure full charge actually occurs.

nowadays modern vehicles hope to keep the battery at a low enough level, so that when the brakes are applied the voltage regulator can ask for higher voltage, loading the alternator, asking it to feed the battery 20 to 50 amps, and thus the engine, and help MPG by 0.0006.

if the battery were fully charged then it would not be able to accept 20 to 50 amps with a higher voltage requirement, and not be able to make it appear that the vehicle gets better MPG's.
_________________________
LA 318 Roller Cam
M1 0w-40
Fram ultra XG8A
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#4809595 - 07/09/18 08:03 PM Re: New Battery, 7 months old [Re: 2010Civic]
Wolf359 Offline


Registered: 04/27/12
Posts: 4891
Loc: MA
Originally Posted By: 2010Civic
I need a new car battery so I went to Costco to see what they have. They have Interstate batteries for very good prices.

They had about 20 batteries of my size. Everyone of them was made in December of 2017. Do you think this is a problem being 7+ months old? You know they have never been charged or topped off in the last 7 months.

What are your thoughts? How many months is acceptable?


Are you sure? You can be that guy that takes them out of the rack to check the date of the last battery. Usually the newest one is at the back. I've done that a couple times. You get a battery that's one month old instead of 5-6. Also they sometimes go by the sticker on the battery so if it's just a 2 or 3 year warranty, you're losing 7 months worth of warranty. For me, one or two months is acceptable, otherwise I'm just going to go to another store.

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#4809602 - 07/09/18 08:13 PM Re: New Battery, 7 months old [Re: Wolf359]
2010Civic Offline


Registered: 12/06/14
Posts: 363
Loc: Minnesota
Originally Posted By: Wolf359
Originally Posted By: 2010Civic
I need a new car battery so I went to Costco to see what they have. They have Interstate batteries for very good prices.

They had about 20 batteries of my size. Everyone of them was made in December of 2017. Do you think this is a problem being 7+ months old? You know they have never been charged or topped off in the last 7 months.

What are your thoughts? How many months is acceptable?


Are you sure? You can be that guy that takes them out of the rack to check the date of the last battery. Usually the newest one is at the back. I've done that a couple times. You get a battery that's one month old instead of 5-6. Also they sometimes go by the sticker on the battery so if it's just a 2 or 3 year warranty, you're losing 7 months worth of warranty. For me, one or two months is acceptable, otherwise I'm just going to go to another store.


Yep, the way the rack was I could easily see all the date stickers.
_________________________
2010 Honda Civic LX
Valvoline SynPower 5w-20 - Honda oil filter
54,061 miles

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#4809612 - 07/09/18 08:17 PM Re: New Battery, 7 months old [Re: 2010Civic]
WhyMe Offline


Registered: 12/18/12
Posts: 548
Loc: Washington for now
your costco must be a slow seller of batteries. the couple i go to the batteries are only a month old at the most.

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#4809618 - 07/09/18 08:23 PM Re: New Battery, 7 months old [Re: 2010Civic]
Donald Offline


Registered: 03/21/04
Posts: 20565
Loc: Upstate NY
Walmart MAXX
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#4809626 - 07/09/18 08:35 PM Re: New Battery, 7 months old [Re: 2010Civic]
Mr Nice Offline


Registered: 09/12/04
Posts: 21353
Loc: Orlando, FL
When I buy a battery at AAP, I'll always pick the newest battery.

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#4809695 - 07/09/18 09:42 PM Re: New Battery, 7 months old [Re: 2010Civic]
Johnny2Bad Offline


Registered: 05/20/13
Posts: 1899
Loc: Saskatchewan, Canada
Lead-Acid cells are 2.2V each; fully charged is 13.2V

If a load test doesn't show serious voltage drop, it's "new enough".
_________________________
'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]

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#4809780 - 07/10/18 01:06 AM Re: New Battery, 7 months old [Re: 2010Civic]
raburn2906 Offline


Registered: 03/23/18
Posts: 38
Loc: TX
The good thing about buying it at Costco is they will warranty it with no issues or questions asked. I've bought three Interstate batteries from them, one was warrantied at 2 1/2 years without question. It did however cost me $3 for the disposal fee,
_________________________
2008 Ford F150 XLT 4.6L
168,506
2001 Ford F150 XLT 5.4L
215,431
2017 VW Jett SE 1.4L
13,128

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#4809833 - 07/10/18 05:51 AM Re: New Battery, 7 months old [Re: 2010Civic]
Spector Offline


Registered: 06/10/02
Posts: 3475
Loc: Chattanooga, TN
Batteries plus Duracells marketing state the store returns them after 2 months so supposedly fresh batteries and these are made in USA whereas about all others are made in Mexico. All of AAP, AZ, etc are Mexican made, Costco, Sam's and BJs Mexican as well I believe. Optima's went downhill IMO, once they switched production to Mexico, now average IMO.

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#4809850 - 07/10/18 06:23 AM Re: New Battery, 7 months old [Re: 2010Civic]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1909
Loc: SE British Columbia, Canada
The places I use up here use the receipt, not the sticker for the warranty. I keep the receipt in the glove box.


Edited by Snagglefoot (07/10/18 06:33 AM)

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#4809877 - 07/10/18 06:55 AM Re: New Battery, 7 months old [Re: 2010Civic]
billt460 Offline


Registered: 03/30/15
Posts: 4554
Loc: Glendale, Arizona
Years back service stations and auto repair centers would "prep" the batteries they sold when you bought them. They would fill the electrolyte and charge them only after they were purchased. (Batteries were shipped in a box dry with the acid packaged in a separate container right alongside). And after charging they would check each cell with a Hydrometer to be sure it was up to full capacity, and top off each cell with electrolyte before installing it.

Today that's not economically viable, so they ship them "ready to go". And many times they end up sitting for months. All depending on how brisk battery sales are at that particular place, along with the popularity and age of the vehicle they are going into. I always put any new battery I purchase on a slow charger, (6 Amps), and many will take a couple hours or more before they come up to full charge. I've seen some batteries in auto parts stores with dust covering the top of them. Were they kept fully charged over these long time periods? You tell me.

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