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deep cycle battery question...

Discussion in 'The Garage' started by jekbrown, Oct 3, 2003.

  1. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    I have been reading a bunch of old posts (searching is so handy) about battery technology and I'd like some kind of definitive answer to the following question: is it ok to use a Optima yellowtop D31A as the lone battery in a DD/trail rig? basic battery stats...

    Volts: 12
    Amp Hours: 75
    CCA @ 0° F: 900
    CA @ 32° F: 1125
    J240 Life Cycle: 10-12,000
    Deep Cycles: 350
    Reserve Minutes: 155

    some posters in the threads I searched indicated that deep cycle batts like this shouldn't be used in constantly-charging type situations... which just seems weird... I mean, do you have to kill these batteries every single time you use 'em just for it to work correctly? why? good solid/factual info/experience appreciated...

    j
     
  2. jeffro

    jeffro 1/2 ton status

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    I've been using a pair of blue tops on my seldom-used toyota for a few years now. They used to drain down just sitting until I put a switch on the battery ground cable. Now it sits for a couple months and I flip the switch and it fires right up.
     
  3. gravdigr

    gravdigr 1/2 ton status

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    If you go to the optima web site and check their fact sheet you will see they list the yellow top as a type of hybrid starting/deep cycle battery. It is made to have enough ca to start your vehicle yet still function as a deep cycle. It isn't as effecient as a red top for starting or a blue top for deep cycle work. But it is a good compromise between the two.
     
  4. KShortell

    KShortell Registered Member

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    Well, being a boater and a USCG Aux. vessel examiner, maybe I can take a crack at this one. A deep cycle battery won't give you high cranking amps. While they will take larger swings in charge than your typical starting battery, they just won't give you the kick you want or need for starting a V-8 in cold weather.

    This is why you'll typically see a dual battery setup in larger boats and RVs: one for starting (high cca) and one for accessories, etc. (the "house" battery).

    Hope this helps a bit...
     
  5. scrappy88

    scrappy88 1/2 ton status

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    If you go with the Optima D31 series, make sure you measure for it first. That battery is absolutely huge (physically) compared to the standard batteries in our trucks. I was going to go with that one but couldn't fit it under the hood without quite a bit of mods and a custom battery tray. Of course if you're mounting it in the bed you're all set. /forums/images/graemlins/thumb.gif
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    [ QUOTE ]
    some posters in the threads I searched indicated that deep cycle batts like this shouldn't be used in constantly-charging type situations... which just seems weird..

    [/ QUOTE ]

    How is it weird? Do you follow the premise that killing a "regular" car battery constantly is going to damage it? If you can understand or agree with that, then you have to agree that a battery not designed for constant charging won't work well in that application, or at least not as well as one designed for it.

    Same thing as with NiCD batters vs. Li-Ion. One has memory, one doesn't. One should be drained low consistently before a recharge, one it doesn't matter, as it's type of construction allows that.

    Different types of batteries require different care and usage.
     
  7. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    starting: is starting such a big deal when you have a good gear reduction starter on your rig? Seems like a batt that can put out over 1000 amps shouldnt have a problem with a starter... but I dont know crap about this stuff so... I dunno. /forums/images/graemlins/confused.gif

    cold weather: dont have much of that around here... portland/vancouver is about is mild as weather gets... never to hot, never to cold. Wouldnt a nice (mean green etc) gear reduction starter help with this also?

    size: yeah the dt31 is a huuuge sucker, heavy as hell too. It'll be custom mounted in the rear of the rig though, so there oughta be plenty of room for it.

    dyeager: yeah, i see what you're saying.. i guess it just struck me as odd to have a automotive battery that wasnt appropriate for automotive use (on its own anyway). I dunno, Optima says the yellow top is capable of both.. and it seems like plenty of people run sole yellow-tops. Im just looking for info before I sink lots of $ into a battery. I really dont want to mess with a dual mattery setup for various reasons... it costs extra $, takes up more room, requires some extra wiring etc etc. What I'd like is one great battery that would do everything I want (lights, stereos, light/moderate winching etc) as opposed to two joe schmoe batterys and a dual batt system for the same task.

    j
     
  8. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    This wont be much help, but...

    I have been using the Pro-Comp Deep Cycle/Off-Road battery. I am not sure if its a hybrid or not, but this battery has worked much better for starting than any other battery I have owned. The thing never goes dead on me either , which is more of truck wiring thing than battery. All I know is I get strong starts every time, even when it sits for a while.

    Now with that said, I doo not DD my truck, so it doesn't see everyday use, ever. Then again it is also an Exide battery and from all accounts from this site these are crap and the battery should stop working any time /forums/images/graemlins/wink.gif
     
  9. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    yeah, i dont really DD my truck right now... and if I need to for work, it prolly wont be long before I get the $200 1981 escort to use for commuting.

    j
     
  10. chulisohombre

    chulisohombre 1/2 ton status

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    i have a red top for my dd/trail rig.it works a hell of a lot better than my wallfart battery i had in there before.i also upgraded to a 100 amp summit alternater.
     
  11. RustBuket

    RustBuket 1/2 ton status

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    Just a regular old battery works fine for my mild 305 and stock starter. I think my alternator is workin pretty good tho cause when I got the batt could only turn the truck over for like 3secs at a time. After like a day of driving around, she was full powa!
     

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