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Old 01-05-2009, 11:44 PM   #11 (permalink)
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Originally Posted by Christ View Post
Does it get cold in Louisiana? I don't think "winter" is an issue LOL.

If you do end up having a problem with starting in the winter (whatever you call it) you can always link another L/G battery in parallel w/ the one you have... this will double the cranking amp output for you, while maintaining 12V, and should start your car just fine.
The Supra is a toy car; I don't drive it when I need the roof on. Very cold for us is 20F Typical annual low is 30F.

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Old 01-06-2009, 12:15 AM   #12 (permalink)
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From what I've heard on the EVDL, Optima's quality has gone way down in recent years. The AGM of choice is the Exide Orbital--same design, better quality.

Also, note that the Red Top is the "starting" battery of the Optima family. If you go that route, go with the Blue Top or Yellow Top, as they're deep cycle batteries and don't cost much more.
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Old 01-06-2009, 10:47 AM   #13 (permalink)
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Hmm, since you're in LA where there's no such thing as winter, I think I like the L&G battery hack. Advance's U1-3 battery weighs 17lb and delivers 300CCA for $32. The 51-1 Honda Civic battery delivers 435CCA, 28lb, $82. My Subaru gets a 35-1: 500CCA, 38lb, $87.

I could save 10lb by dropping in a Civic battery, and that is tempting, but consider the environmental and cost impact of running batteries that last, say, four years instead of six. Maybe I'll try it next time I need a battery.
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Old 01-07-2009, 05:16 AM   #14 (permalink)
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Braille Battery - B106

$140. 6.6lbs. Fully charged, 80*F, over 500 cranking amps. CCA: 210A. Even at 210A that'd start my truck in most weather. Same cost as the color tops, AGM insides, its even recommended for large motor (V10+) daily driving. I don't see a downside other than extreme cold weather. May not have the CCA for that. Rated at 2000 10% cycles. Not sure how that'd corrolate to daily driving, but if one were to assume 1 cycle per driving experience, that's 2000 times you drive your car. Worst case, I start my car or truck 5-6 times a day. 2000/6=333 days. That's assuming I bleed the battery every time, which isn't the case. I'd expect 2-3 years for one of these at least. the Group 34 sets (what a lot of cars/trucks use) are rated at 3100 cycles. 1/3 more, so 450 days. But we know you'll get 4 years out of it if treated well. So that means for the B106 I'd expect 3 years minimum.

6.6lbs, $140, 3 years. It's my next battery when the current ones fail. but certainly can't beat $32 for 300CCA either...ahhh. choices.

Ramblings: Not a good choice for electrics, at 10A/hr it'd die pretty fast. hmm.. 10Ah/6.6lbs. compared to the B10049 at 100Ah/58lbs, not so great power density, 1.5Ah/lb vs 1.72Ah/lb. Anyone got a battery to beat that?
/rambling
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Old 01-07-2009, 10:40 AM   #15 (permalink)
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I've had an optima yellow top since '02 or '03. its been in 3 different rigs, no problems yet. got it at an auto parts store on "double" sale. the yellow tops were stocked in the red top sale rack. snagged one before they realized their mistake.
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Old 01-08-2009, 09:27 PM   #16 (permalink)
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The last couple of years I have been having terrible luck with Optima Batteries.
I just had the Red Top in the Fiero replaced for the 2nd time under warranty and the Yellow Top in the Metro replaced for the first time under warranty.
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Old 04-12-2009, 12:45 AM   #17 (permalink)
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Battery charging rate

Just a note on charging batteries. The recommended maximum charging rate should never exceed 10% of the battery's amp hour rating. If you have an 85 amp hour battery than 8.5 amp is the fastest you want to charge it. The above is for wet acid batteries. If you have a gel cell or AGM or other not wet battery you will want to charge it at an even lower rate, see battery manufactures recommendation. I usually try and not exceed 5% of the battery rating if possible. I was in the marine business and many of the boat batteries I had to replace were quick charged and damaged the batteries over time thus shortening the battery live.

Al
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Old 04-12-2009, 12:52 AM   #18 (permalink)
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Quote:
Originally Posted by al74dart View Post
Just a note on charging batteries. The recommended maximum charging rate should never exceed 10% of the battery's amp hour rating. If you have an 85 amp hour battery than 8.5 amp is the fastest you want to charge it. The above is for wet acid batteries. If you have a gel cell or AGM or other not wet battery you will want to charge it at an even lower rate, see battery manufactures recommendation. I usually try and not exceed 5% of the battery rating if possible. I was in the marine business and many of the boat batteries I had to replace were quick charged and damaged the batteries over time thus shortening the battery live.

Al
I TOALLY DO NOT KNOW THE TRUTH HERE!

But 2 Optima representatives have told me that Optima Redtops must be charged at a 1 hour rate or Faster. They recommend charging at 100 Amps for their standard starting battery.


As an update I still have a useless Optima red top that they (Advance auto parts) will not take back. I've been running the lawn and garden battery in it for quite some time;only issue so far was the tech at Lonestar who wasn't sure if a lawn and garden battery was legal for competition, quick phone call cleared that up and we ran the car.
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Old 04-12-2009, 01:19 AM   #19 (permalink)
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Charging spec from Optima for red top batteries

Charging Info from Optima's website.

All OPTIMAŽ RedTop Batteries
These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep cycle applications.

Recommended charging information:

Alternator:
13.3 to 15.0 volts, no amperage limit.

Battery charger:
13.8 to 15.0 volts, 10 amps maximum, 6-12 hours approximate.

Rapid Recharge:
Maximum voltage 15.6 volts (regulated).
Maximum current: No limit as long as temperature < 50°C (125°F).
Maximum recharge time: Charge until current drops below 1 amp.

Float charge:
13.2 to 13.8 volts, 1 amp maximum current, time indefinite (at lower voltage).

All limits must be strictly adhered to.


What's interesting is they give "10 amps maximum" charging rate for a battery charger than state "no limit" charge rate for "Rapid Recharge". The problem with the no limit charge rate is by the time the battery reaches the 125 degrees F on the outside charging at 100 amps the inside of battery is much hotter and most likely already damaged. I can see why they are having a problem with batteries going bad when they say "no limit" on "rapid Recharging" charging rate.

If you use the 10% rule you will be pretty close to what the manufactures rate as the max charge rate with wet cell batteries. Again non wet cells like AGM and gel cells require a slower rate of charge.

Al
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Old 04-12-2009, 01:24 AM   #20 (permalink)
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Quote:
Originally Posted by al74dart View Post
Charging Info from Optima's website.
See above.
Thank you very much for the information!

Sounds about right 2 me.

I don't believe I have charged this one my self at all. It is still sitting on the back porch.

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