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post #1 of 12 Old 02-18-2011, 05:42 AM Thread Starter
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dual battery question????

If you are going to put together a dual battery set-up with Optima Batteries, can you run a Red Top (which I have) and a Yellow top, if I want to use it for winching?
Or should I go with 2 Yellow Tops?

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post #2 of 12 Old 02-18-2011, 06:07 AM
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seeing as how optima batteries are nowhere near as good as what they were 10 years ago, i wouldnt use them.
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post #3 of 12 Old 02-18-2011, 06:21 AM Thread Starter
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Quote:
Originally Posted by bthomas View Post
seeing as how optima batteries are nowhere near as good as what they were 10 years ago, i wouldnt use them.
What would you use?

35" KM2's - Poly Performance Fox Coilover system - TeraFlex Arms - PSC Ram - Rugged Ridge Modular Snorkel - COP 4X4 Nack Attack - Tatton Driveshaft - S-POD - 5.13 and 6 speed.
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post #4 of 12 Old 02-18-2011, 06:36 AM
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A lot of people are using Odyssey batteries. Same type of tech (AGM) as the Optimas but been getting better ratings.

Sears sells their Platinum battery (rebadged Odyssey) in two flavors. Regular and Marine (Deep cycle). I have the Marine in my Jeep.

http://www.sears.com/shc/s/p_10153_1...0134000P?mv=rr

http://www.sears.com/shc/s/p_10153_1...0034000P?mv=rr

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post #5 of 12 Old 02-18-2011, 07:05 AM Thread Starter
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Quote:
Originally Posted by MoridinTX View Post
A lot of people are using Odyssey batteries. Same type of tech (AGM) as the Optimas but been getting better ratings.

Sears sells their Platinum battery (rebadged Odyssey) in two flavors. Regular and Marine (Deep cycle). I have the Marine in my Jeep.

http://www.sears.com/shc/s/p_10153_1...0134000P?mv=rr

http://www.sears.com/shc/s/p_10153_1...0034000P?mv=rr
Thanks, I'll check it out

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post #6 of 12 Old 02-18-2011, 07:12 AM
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Im a optima convert as well, but if you have one already id use the red top as your main Jeep Batt and get a yellow top as you backup bat with all your lights and winch tied to the yellow top.
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post #7 of 12 Old 02-18-2011, 07:15 AM
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here is a link to my Dual batt install.

Dirtys Dual batt writeup
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post #8 of 12 Old 02-18-2011, 11:36 PM
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Quote:
Originally Posted by vandegrift View Post
If you are going to put together a dual battery set-up with Optima Batteries, can you run a Red Top (which I have) and a Yellow top, if I want to use it for winching?
Or should I go with 2 Yellow Tops?
No, you should always use matched batteries in any multi-battery situation. Different batteries have different charge/discharge characteristics and having mismatched sets will not be optimal for most switching/charging systems.

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post #9 of 12 Old 02-22-2011, 10:00 PM
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If your running 24v yes there could be a problem with mis matched batteries but in a dual battery 12v set up you only charge and use one battery at a time!
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post #10 of 12 Old 02-24-2011, 08:09 AM Thread Starter
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I will probably just go with 2 new ones now that the tax return is showing up this year..

35" KM2's - Poly Performance Fox Coilover system - TeraFlex Arms - PSC Ram - Rugged Ridge Modular Snorkel - COP 4X4 Nack Attack - Tatton Driveshaft - S-POD - 5.13 and 6 speed.
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post #11 of 12 Old 02-24-2011, 09:22 AM
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I am running the Sears Diehard Platinums. Basically they are rebadged Odessy batteries but with a 4 year replacement warranty. Optima only gives you a 1 year replacement warranty.

SFCCotton's_Most_Awesome_Dual_Battery_Install_Thre ad!


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post #12 of 12 Old 02-24-2011, 02:27 PM
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Quote:
Originally Posted by ibjammin View Post
If your running 24v yes there could be a problem with mis matched batteries but in a dual battery 12v set up you only charge and use one battery at a time!
You better check yo'self before you wreck yo'self

Many battery isolators are actually combining the batteries the vast majority of the time. The isolator will kick in when the primary battery drops below a threshold voltage to ensure you can always crank, but other than that you are usually hooked in parallel so they both charge at the same time.

(parallel doesn't change the voltage, going in series would give you a 24v system which most people have no reason to mess with)

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