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Old 03-05-2013, 09:22 AM   #51
mx_9
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Quote:
Originally Posted by Uncle Scotty View Post
my 20L is now a year old and goin great...was 25*F this mornin and the car turned over just fine after not being driven for 3 days


Great...good to hear.

After digging around I found that Advance Auto rebrands these as Magna Power batteries and they stock them at most stores. Their on-line discount makes in-store pick-up a tad bit lower than on-line store....like a dollar Gonna go check out the terminals to see if my PC680 terminals can be used like research shows they can. Yeah, I'm anal.
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Old 03-05-2013, 09:37 AM   #52
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Originally Posted by mx_9 View Post
Great...good to hear.

After digging around I found that Advance Auto rebrands these as Magna Power batteries and they stock them at most stores. Their on-line discount makes in-store pick-up a tad bit lower than on-line store....like a dollar Gonna go check out the terminals to see if my PC680 terminals can be used like research shows they can. Yeah, I'm anal.

meh.....i just use solder on copper lug terminals on the ends of the cables and done wih the supplied bolts to the top of the battery.

no need to get complicated
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Old 03-09-2013, 12:21 PM   #53
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So, after a sample of one sorta cold night I have to say that I'm happy with the ext18l. The PC680 has struggled from day one in the winter and after 7 years it about had it. Found the magna power ext18l at a local Autozone (rebadged Deka) and installed it yesterday. With the PC680 my starter was slow disengaging on cold mornings, the 18xl gave me the first noiseless start of the past 3 months. The PC680 winter starts had the starter dragging from its first winter.

For a DD the PC680 can cut it but there's no margin. That's with relatively mild NC winter. Factoring in that my '04 STi is still without a radio and 95% or so of my driving is with DRL and no headlights I found it to be a weak solution for me.

With on-line coupons my in-store pick-up, tax included, was $93 and change.
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Old 03-09-2013, 01:57 PM   #54
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So, after a sample of one sorta cold night I have to say that I'm happy with the ext18l. The PC680 has struggled from day one in the winter and after 7 years it about had it. Found the magna power ext18l at a local Autozone (rebadged Deka) and installed it yesterday. With the PC680 my starter was slow disengaging on cold mornings, the 18xl gave me the first noiseless start of the past 3 months. The PC680 winter starts had the starter dragging from its first winter.

For a DD the PC680 can cut it but there's no margin. That's with relatively mild NC winter. Factoring in that my '04 STi is still without a radio and 95% or so of my driving is with DRL and no headlights I found it to be a weak solution for me.

With on-line coupons my in-store pick-up, tax included, was $93 and change.
What's the normal "cold" temperature you are talking about?
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Old 03-09-2013, 02:22 PM   #55
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REMEMBER THIS CHILDREN

these agm batteries do NOT lose power when they get cold......they maintain power down to -40*F and you dont have to worry about cold making them go bad and die and kill you and your children and dog and all that

the only reason cold matters is that it makes the engine a lil harder to start due to IT being cold
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Old 03-09-2013, 11:00 PM   #56
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Odyssey batteries are AGM. AGM batteries are lead acid. Just the electrolyte is absorbed in a glass mat. But they're still lead acid. Their nominal voltage at 68F is 13.5V.

Battery capacity is reduced at low temperatures. It can drop by 50% at -22F but battery life increases by about 60%. It doesn't make any difference if it's AGM or not, It's still the same chemistry and the chemical reaction is weaker at lower temperatures. Odyssey states that their batteries will out perform other AGM batteries of equal size even if the temperature is -40F.

Nice thing about lead acid batteries is they can work down to -80F. They just won't have as much power. No other battery technology I know of can do that. NiCd batteries come in second, working down to -31F. Most lithium ion batteries can be damaged if they get below freezing. I noticed the braillebattery does not have a cold cranking amp speciification. Cold cranking amps are measured at 0F. Nor do they have a cranking amp specification. Cranking amps are measured at 32F.

The Odyssey PC680 is rated 220 cold cranking amps. According to Odyssey the PC680 will put out 105 amps for over 30 seconds at -40F, that's almost a 53% power loss. At that temperature the battery output starts a 8.5V and drops to 7.2V which is the cut off voltage for cold cranking amp tests.

High temperatures kill batteries. For every 15 degrees over 77F battery life is reduced by half but battery capacity increases. I'm in Phoenix and have been using Optimas for over 20 years. So far they've outlasted the cars we've put them in. I'd like to have a smaller battery, but battery life is more important to me.

Last edited by CalvinT; 03-09-2013 at 11:21 PM. Reason: Correct data
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Old 03-09-2013, 11:35 PM   #57
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I guess the pdf that i had was wrong......maybe i can find it and post it

maybe calvin will post his link
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Old 03-10-2013, 03:08 AM   #58
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Their brochure is a bit misleading... The information is there, but you have to sort through three documents to get the real facts.

I looked up their Technical Manual for their batteries. On page 14 there's a chart showing the -40F cold weather performance for the PC2150. They tested at 550 amps which is very impressive. They then say "Since all ODYSSEY batteries are designed similarly, one can expect similar outstanding cold weather performance from any of the other ODYSSEY batteries.

http://www.odysseybatteries.com/file...1_0411_000.pdf

I then looked up the CCA rating for the PC2150 on this page.

http://www.odysseybatteries.com/file...D-005_0611.pdf

The CCA rating is 1150 amps. Over twice the current they used for their -40F test.

Then I looked up the CCA rating for the PC680. It's 220 amps.

http://www.odysseybatteries.com/file...V_0611_001.pdf

550 amps is 47% of 1150 amps. So I multiplied 220 amps by 47% to get 105 amps.

The 7.2 volt cutoff is standard for cranking amps tests. Notice the starting voltage is 8.5 volts. That's very good for a lead-acid battery at -40F.

This is a triumph of marketing. They used their second largest commercial battery for their -40F chart, not an automotive battery. That gave a -40F CCA rating that matches most standard automotive batteries at 0F. It's easy to get the impression that they don't lose power when they get cold if you don't realize they're comparing apples and oranges. You have to read the small print and dig to get a true picture.

I think the ODYSSEY battery is still a very impressive battery and would have given their 35R-PC1500 battery a look if I had known about it. That's their group 34 battery for the Subaru.
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Old 03-10-2013, 11:19 AM   #59
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Quote:
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High temperatures kill batteries. For every 15 degrees over 77F battery life is reduced by half but battery capacity increases.
You got that right. My 6 month old Odyssey PC680MJ (metal jacket) crapped the bed on me in my Mustang one beautiful 80 degree day (heat soak).

Personally I think Odyssey batteries are over-priced junk.
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Old 03-10-2013, 12:35 PM   #60
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You got that right. My 6 month old Odyssey PC680MJ (metal jacket) crapped the bed on me in my Mustang one beautiful 80 degree day (heat soak).

Personally I think Odyssey batteries are over-priced junk.

my pc680mj lasted 5 years in florida heat

but it was under my passengers seat.....i picked that location for several reasons

it was going to locate the battery as low and as close to the cg as possible
it was easy to put it there
and it was as cool a place as possible in the car

if you arent going to relocate these batteries, dont buy one to put under the hood...bad idea
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Old 03-11-2013, 12:11 AM   #61
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I think the old Volkswagen Beetles had it right. The battery was under the back seat. I remember years ago old pickup trucks put the battery under the floor on the passenger side. In both cases the battery was close to the starter and away from engine heat.
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Old 03-11-2013, 01:33 PM   #62
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optima red top, hands down best battery on the market for any sort of remotely aggressive driving; plus the CCA and reliability is unparalled
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Old 03-11-2013, 01:41 PM   #63
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optima red top, hands down best battery on the market for any sort of remotely aggressive driving; plus the CCA and reliability is unparalled
sorry

just way too heavy.....maybe you dont understand that, but many of us DO

and their quality has suffered badly recently..sorry

try again
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Old 03-11-2013, 03:02 PM   #64
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optima red top, hands down best battery on the market for any sort of remotely aggressive driving; plus the CCA and reliability is unparalled
I wonder if you tried anything else before stating that claim?
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Old 03-11-2013, 11:32 PM   #65
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I think any AGM battery will be superior to a standard battery. They're more durable and you don't have acid problems. The telecommunications industry has switched to them replacing all their wet cells for backup power because they're very low maintenance.

I heard two stories here in Phoenix. One guy was using an Optima in his boat, which sank. After raising the boat a while later, the battery still worked. Another guy got drunk while camping and shot his Optima battery for some reason. Anyway, he was still able to start his car when he sobered up. No, I don't know what he shot it with. Probably NOT a .44 magnum though. There's no way a wet cell battery would survive either situation. I think any well made AGM battery would have held up.
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Old 03-12-2013, 12:30 AM   #66
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i have run a pc680 sized agm battery under the seat in both my cars since 2003 and never been left stranded or needed a jump start
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Old 03-12-2013, 03:27 AM   #67
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i have run a pc680 sized agm battery under the seat in both my cars since 2003 and never been left stranded or needed a jump start
Seems to me someone could run two of them, one under each side if they needed more capacity.

Have you ever used it in super cold weather?
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Old 03-12-2013, 04:04 AM   #68
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Seems to me someone could run two of them, one under each side if they needed more capacity.

Have you ever used it in super cold weather?

down to the 1x*F and was cold like that for a week at a time......below 30*F quite often here in the winter

never had any issues even afer sitting for several days
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Old 04-23-2013, 03:03 PM   #69
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i was considering the LFX21A6-BS12 as being plenty much...and 3 pounds
Were you serious about using this battery?

Ive googled lightweight batteries and your name kept popping up everywhere. I guess you are the unofficial expert now. If the LFX21A6-BS12 is usable, I wouldnt mind picking one up.

What would you recommend for a daily driver? I want something really light that will last a while. I use my car everyday usually 30 minutes to and from work on highway and if I use it on the city for maybe 15 minutes at a time between start up and shut off. If I get a lightweight battery, I will be relocating it to under the passenger side seat. All the electrical is pretty much stock except for a remote start that I have installed. Winters dont usually go into the negatives but Ive seen it go as low as 10 degrees. I also occasionally leave the car on to listen to the radio for 10-15 minutes if I am waiting for my girlfriend to get out of work. But if I cant leave the radio on with this battery, Ill just turn the car off.

If I could use the LFX21A6-BS12 reliably, I will be ordering one today! My goal is to get at least 3-4 years out of the battery.




**Forgot to mention that I would like to spend around 200-300. I saw a really nice one a while ago but for like $1200....**
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Old 04-24-2013, 06:17 AM   #70
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Quote:
Originally Posted by Uncle Scotty View Post
i have run a pc680 sized agm battery under the seat in both my cars since 2003 and never been left stranded or needed a jump start
Quote:
Originally Posted by jteran5 View Post
Were you serious about using this battery?

Ive googled lightweight batteries and your name kept popping up everywhere. I guess you are the unofficial expert now. If the LFX21A6-BS12 is usable, I wouldnt mind picking one up.

What would you recommend for a daily driver? I want something really light that will last a while. I use my car everyday usually 30 minutes to and from work on highway and if I use it on the city for maybe 15 minutes at a time between start up and shut off. If I get a lightweight battery, I will be relocating it to under the passenger side seat. All the electrical is pretty much stock except for a remote start that I have installed. Winters dont usually go into the negatives but Ive seen it go as low as 10 degrees. I also occasionally leave the car on to listen to the radio for 10-15 minutes if I am waiting for my girlfriend to get out of work. But if I cant leave the radio on with this battery, Ill just turn the car off.

If I could use the LFX21A6-BS12 reliably, I will be ordering one today! My goal is to get at least 3-4 years out of the battery.




**Forgot to mention that I would like to spend around 200-300. I saw a really nice one a while ago but for like $1200....**

i have no data on these new Li batteries so i can not tell you how long it would last, but the one i posted above would seem to be a good choice based on its specs compared to the AGM batteries i HAVE used

and i think that getting 3 years out of one would be GREAT....the extreme magna powersports(deka) agm battery im using now is about 18 months old and doin jus fine

so...i CAN tell you that the ETX16L or ETX20L will work just fine for a dd....and the LFX21A6-BS12 is, in fact, a bit more powerful than either of those....so, it should work just fine....and weigh 10+ pounds less

the next battery i put in my car WILL be one of these Li batteries....dunno which one for sure as technology is advancing....but im lovin the idea of a #3 battery just like going to a 13(or so) pound battery from the stock 35 pound one

Last edited by Uncle Scotty; 04-24-2013 at 06:25 AM.
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Old 04-25-2013, 02:38 AM   #71
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Not to thread jack too much but Scotty why do you prefer relocating your battery to under the passenger seat over the trunk like I've seen with others? Is it personal preference? Or some ultimate unkown soon to be revealed Scotty wisdom
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Old 04-25-2013, 07:15 AM   #72
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Not to thread jack too much but Scotty why do you prefer relocating your battery to under the passenger seat over the trunk like I've seen with others? Is it personal preference? Or some ultimate unkown soon to be revealed Scotty wisdom
because its the perfect place for it

now...small/light li-pb battery??

that is gonna go behind the glove box i think
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Old 04-26-2013, 03:07 AM   #73
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because its the perfect place for it

now...small/light li-pb battery??

that is gonna go behind the glove box i think

Is it just because of less wires to run through the car? If you move the li-ph battery to the glovebox I can see the less wires as a pretty nice plus.
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Old 04-26-2013, 07:16 AM   #74
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My expirence.Braille,odyssey,optima,all died within 2 years.Magna power from advanced auto works wonderful.Granted i have a viper alarm and my car sits for 2-3 weeks at a clip.Always have it on a battery tender.Most dissappointing was the optima.
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Old 04-26-2013, 08:56 AM   #75
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Uncle Scotty, you recommended the LFX21A6-BS12. I see that it is at 3# with 315 CCA. How about the LFX18L2-BS06 ? 1.3# but with 270 CCA. Would that not be enough for what i need?
Quote:
Originally Posted by jteran5 View Post
What would you recommend for a daily driver? I want something really light that will last a while. I use my car everyday usually 30 minutes to and from work on highway and if I use it on the city for maybe 15 minutes at a time between start up and shut off. If I get a lightweight battery, I will be relocating it to under the passenger side seat. All the electrical is pretty much stock except for a remote start that I have installed. Winters dont usually go into the negatives but Ive seen it go as low as 10 degrees. I also occasionally leave the car on to listen to the radio for 10-15 minutes if I am waiting for my girlfriend to get out of work. But if I cant leave the radio on with this battery, Ill just turn the car off.

If I could use the LFX21A6-BS12 reliably, I will be ordering one today! My goal is to get at least 3-4 years out of the battery.
**Edit** Just saw that the LFX18L2-BS06 is only 6 volt.

Last edited by jteran5; 04-26-2013 at 09:04 AM.
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