Recent Topics
Mixing ATF in Honda Accord
by mikael325
12/18/14 01:52 PM
DETECTIVES: What is my Camry's ACTUAL model code?
by SumpChump
12/18/14 01:23 PM
Pre-built system opinions wanted
by oilboy123
12/18/14 12:42 PM
Build a mini-audio amp with your kids for Xmas
by sleddriver
12/18/14 12:01 PM
Dodge Challenger/Charger owners w/Police wheels
by Blue_Goose
12/18/14 11:47 AM
Drove my Ecopia 422s in snow for the first time
by badtlc
12/18/14 10:59 AM
Chromecast better on phone than on laptop.
by mrsilv04
12/18/14 10:45 AM
World wide oil recommendations Acura 3.7L engine
by MajorCavalry
12/18/14 10:40 AM
M1 0w30 AFE in Volvo 2.4t?
by dlundblad
12/18/14 10:26 AM
A Montana man who set trap convicted of homicide.
by datech
12/18/14 10:00 AM
Cuba topic got nuked without trace huh?
by Vikas
12/18/14 09:33 AM
M1 TDT Absolutely Stopped My 5.3L Cold Clacking.
by Turk
12/18/14 09:29 AM
Newest Members
hellermedia, TimothyJ, Cuore_Sportivo, mikael325, mag44
52210 Registered Users
Who's Online
110 registered (123Saab, 147_Grain, 2010_FX4, 3800Series, 2009Edge, 10 invisible), 1546 Guests and 174 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52210 Members
66 Forums
223603 Topics
3545403 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#1761222 - 01/29/10 10:12 PM How does AutoZone charge a battery in an hr?
Chris142 Offline


Registered: 06/05/03
Posts: 11740
Loc: apple valley, ca
There site says they can charge it in an hr or less.

"AutoZone can charge your battery for free while you wait.

You left the lights on in your car overnight, and your battery is dead. What should you do? Take your battery to AutoZone. We have a Duralast Fast Charger that can charge your battery for free while you wait. The fast charger charges 12-volt batteries in about 30 minutes. AutoZone also offers overnight battery charging for 6 or 12-volt lawn and garden, motorcycle and marine batteries."

The proper way to charge a battery is like 2A all night or several hrs on say 10A is aceptable if your in a hurry. Quick charging a battery, especially in 1/2 hr or so could damage it.

I wonder how they get away with this?
_________________________
02 Wrangler qsgb 5w30
87 F250 Diesel Mag1 5w40
04 Tahoe super-s 5w30
Z400 maxima 20w50
KLR250 Maxima 10w40
Polaris Trailblazer delo 5w40

Top
#1761226 - 01/29/10 10:19 PM Re: How does AutoZone charge a battery in an hr? [Re: Chris142]
Jonny Z Offline


Registered: 06/03/05
Posts: 1251
Loc: Austin, TX
Simple, they charge it to 77% with high amps, just enough to start a car. The first 77% is quick, bulk charge, it is the absorption stage, that brings it to 100% that takes time.
_________________________
02 Camry SE 4 cyl 5sp manual. 120K. Vavoline MaxLife Blend 5W30 + Purolator Classic / Redline MT90 / Michelin HydroEdge

Top
#1761232 - 01/29/10 10:26 PM Re: How does AutoZone charge a battery in an hr? [Re: Jonny Z]
oilboy123 Offline


Registered: 12/05/03
Posts: 6650
Loc: Everett, Washington
I agree they do a slam charge that is not a complete %100 charge. I concur to charge at least 6-8hrs or so.

Good sales method to get people with a bad battery. By the way your battery is toast, especially after we jammed it with 100 amps......I mean when we charged it. Coffee2
_________________________
Truth is mighty and will prevail. There is nothing wrong with this, except that it ain't so.
Mark Twain







Top
#1761235 - 01/29/10 10:32 PM Re: How does AutoZone charge a battery in an hr? [Re: oilboy123]
Chris142 Offline


Registered: 06/05/03
Posts: 11740
Loc: apple valley, ca
I wonder how many batteries blow up, leak or whatever while they are cooking them?
_________________________
02 Wrangler qsgb 5w30
87 F250 Diesel Mag1 5w40
04 Tahoe super-s 5w30
Z400 maxima 20w50
KLR250 Maxima 10w40
Polaris Trailblazer delo 5w40

Top
#1761236 - 01/29/10 10:33 PM Re: How does AutoZone charge a battery in an hr? [Re: oilboy123]
daves87rs Offline


Registered: 02/23/09
Posts: 13646
Loc: Michigan
Ouch!
_________________________
“The Only Thing Necessary for the Triumph of Evil is that Good Men Do Nothing.”

Top
#1761241 - 01/29/10 10:39 PM Re: How does AutoZone charge a battery in an hr? [Re: daves87rs]
Chris142 Offline


Registered: 06/05/03
Posts: 11740
Loc: apple valley, ca
"Heres your charged battery. Nevermind the smoke".
_________________________
02 Wrangler qsgb 5w30
87 F250 Diesel Mag1 5w40
04 Tahoe super-s 5w30
Z400 maxima 20w50
KLR250 Maxima 10w40
Polaris Trailblazer delo 5w40

Top
#1761272 - 01/29/10 11:10 PM Re: How does AutoZone charge a battery in an hr? [Re: Chris142]
postjeeprcr Offline


Registered: 01/05/09
Posts: 1781
Loc: USA
Originally Posted By: Chris142
I wonder how many batteries blow up, leak or whatever while they are cooking them?


I would guess less than you would believe. Now I would be curious if that charging had an effect on battery life. Most people who probably take advantage of that are in a hurry to get somewhere.
_________________________
If I agreed with you, we'd both be wrong.

Top
#1761276 - 01/29/10 11:16 PM Re: How does AutoZone charge a battery in an hr? [Re: postjeeprcr]
wapacz Offline


Registered: 11/21/05
Posts: 929
Loc: MI
A batteries internal resistance increases as its charge does. So at first it can take a charge fast with low heat production. Once it gets to a certain point the internal resistance is enough to case heat problems and slow the charge rate.

Top
#1761577 - 01/30/10 09:14 AM Re: How does AutoZone charge a battery in an hr? [Re: wapacz]
eljefino Online   content


Registered: 06/15/03
Posts: 24616
Loc: ME
I worked deliveries on this dysfunctional island where the mechanic would unhook the alternator field wire, put the truck up on jackstands, get on his creeper, and take an eight hour nap "looking for that broken wire".

We didn't let that thug get away with it though, as we'd hook the charger up on "55A boost" then go cruising like nothing was ever wrong. This passive aggressive game, and battery, lasted longer than anyone would ever have expected. wink

Top
#1761597 - 01/30/10 09:39 AM Re: How does AutoZone charge a battery in an hr? [Re: Chris142]
Papa Bear Offline


Registered: 08/11/05
Posts: 6159
Loc: Leamington, ON, Canada ..... r...
Originally Posted By: Chris142
I wonder how many batteries blow up, leak or whatever while they are cooking them?


Chris, you'd need oven mitts to carry the battery out to the car. LOL
_________________________
"Over 6,000 posts... about 30 of them good ones" coffee


2007 Uplander LS RWB .. ST dino, NAPA Pro-Select filter (quite sufficient)


Top
#1761692 - 01/30/10 11:05 AM Re: How does AutoZone charge a battery in an hr? [Re: oilboy123]
ShiningArcanine Offline


Registered: 12/28/06
Posts: 560
Loc: New York
Originally Posted By: oilboy123
I agree they do a slam charge that is not a complete %100 charge. I concur to charge at least 6-8hrs or so.

Good sales method to get people with a bad battery. By the way your battery is toast, especially after we jammed it with 100 amps......I mean when we charged it. Coffee2


My battery died after they charged it in order to run it through their tester. People here said that I should have brought a replacement battery from them, but instead I went to Firestone. I guess I made the right decision.

Top
#1761707 - 01/30/10 11:14 AM Re: How does AutoZone charge a battery in an hr? [Re: ShiningArcanine]
brianl703 Offline


Registered: 05/07/04
Posts: 10487
Loc: Manassas, VA
If the battery croaks due to this, it was on it's way out.

The alternative is to jumpstart the car, and maybe the alternator will croak instead.

Top
#1761755 - 01/30/10 11:52 AM Re: How does AutoZone charge a battery in an hr? [Re: brianl703]
benjamming Offline


Registered: 01/03/04
Posts: 5687
Loc: northern Alabama
brianl703,

The real alternative is to charge the battery slower as mentioned above wouldn't you think?

Top
#1761816 - 01/30/10 12:29 PM Re: How does AutoZone charge a battery in an hr? [Re: benjamming]
brianl703 Offline


Registered: 05/07/04
Posts: 10487
Loc: Manassas, VA
Sure, if you have the time. I suspect that someone who wants a battery charged in 1 hour probably doesn't want to wait for an 8-hour charge.


Top
#1761826 - 01/30/10 12:32 PM Re: How does AutoZone charge a battery in an hr? [Re: brianl703]
mechanicx Offline


Registered: 10/23/09
Posts: 8576
Loc: Ohio
Originally Posted By: brianl703
If the battery croaks due to this, it was on it's way out.

The alternative is to jumpstart the car, and maybe the alternator will croak instead.


I agree. What is the difference between this quick charge and jumping a battery and letting the alternator throw a 100 amps at it besides working your alternator hard?

Top
Page 1 of 2 1 2 >