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  1. #1
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    Battery that will work on a 300xs that isn't ridiculously heavy

    Looking for options on what kind of battery's guys are running on the 300xs that arent ridiculously heavy.

    thanks

  2. #2
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    Quote Originally Posted by gorillapowered View Post
    Looking for options on what kind of battery's guys are running on the 300xs that arent ridiculously heavy.

    thanks

    I went this route. they have worked great for starting, I still power my stereo with Optima's. these were very favorable, with the strength of the US dollar. They arrived in one week.

    Here is a picture right after mounting. They weighed just over 5 lbs each.

    http://www.lithiumax.com.au/
    Attached Thumbnails Attached Thumbnails Lithiumax Battery.jpg  

  3. #3
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    thanks for the input. I was looking to run a single battery that will have enough cranking amps for a 300xs and still power my stereo moderately. The ones I found are really heavy 65-70pds. Hoping for something a little lighter then that. Wondering if anybody had some good experiences.

  4. #4
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    I believe mercury recommends 1000cca for the opti motor JMO

  5. #5
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    yeah I believe you are correct vnemous. Its needs some high juice..

  6. #6
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    oddyssey pc-925....i have used these on several 300xs motors with ZERO issues.....great batteries and alot lighter than a crap optima....
    1984 28 ghost twin 200 Yamah ProVs (SOLD)
    1997 21 Superboat Legend 250 VMAXXX (SOLD)
    2001 25 Concept CC 250EFI (SOLD)
    2002 24 Superboat Step 250EFI (SOLD)
    1997 21 Checkmate Pulsare 200EFI Merc (Beater Boat)(SOLD)
    1994 20 Hydrasport 225 Optimax (SOLD)
    1998 27 progression Twin 225 Mercs (SOLD)
    2005 23 Kryptonite 300 Promax (SOLD)

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  8. #7
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    Quote Originally Posted by vnemous View Post
    I believe mercury recommends 1000cca for the opti motor JMO
    you are correct, I was also worried about that, but the lithium 850's haven't failed me yet. I have used them for over a year. I set my battery switch up so I can run them in parallel so that essentially doubles the amperage. About half the time I run the switch set to parallel.

  9. #8
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    thanks for the input. See a lot are running that odyssey 925. If that will work kinda like that 26 pds and not a bad price.

  10. #9
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    To expand on this, would a pair of PC925's be a desirable configuration to support a 300XS and onboard electronics for all day pleasure use (50% running, 50% stopped, etc.) be a good solution?

    I'm thinking its a lot of capacity with the security of switching off a low battery for the weight of 1 "normal" battery.

  11. #10
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    PC925>

    http://www.jegs.com/i/Odyssey-Batter...FQQIaQodx0wJxw

    I love the weight but it says its a 900PHCA battery. Whats PHCA ?

    I've been running the blue tops (one is getting tired @ 4 years)
    Wriggleys gum makes me think of boating, "Double your engines, Double your fun"



  12. #11
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    I went with the PC1200 due the fact that I have a stereo as well. The price is reasonable and the billet mount is simple. I do however have a brand new lithium powerpack M3440 (lithiumpros.com) that I will make someone a good deal on- you can check out the specs. It is very light and cranking amps are crazy (group 34) was just bigger then I had room for in the little STV. If nobody wants it then it will end up in the LCB when it gets to the point of rigging.

    Joe

  13. #12
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    Quote Originally Posted by JPEROG View Post
    I went with the PC1200 due the fact that I have a stereo as well. The price is reasonable and the billet mount is simple. I do however have a brand new lithium powerpack M3440 (lithiumpros.com) that I will make someone a good deal on- you can check out the specs. It is very light and cranking amps are crazy (group 34) was just bigger then I had room for in the little STV. If nobody wants it then it will end up in the LCB when it gets to the point of rigging.

    Joe
    So you just run a single battery.

    I haven't owned a boat with only 1 battery for 30 years but the extra 40lbs means a lot more in an 1800lb boat than it did in a 5000lb boat.

    But I'm not sure I'm ready to spend $1500 on a battery

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  15. #13
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    PC925s will definetly be fine for a day of use like u say....i always wire them up to have one starting and one house battery with an ACR between them to charge....this way if i kill the house i can still start the engine and let it charge everything up....
    1984 28 ghost twin 200 Yamah ProVs (SOLD)
    1997 21 Superboat Legend 250 VMAXXX (SOLD)
    2001 25 Concept CC 250EFI (SOLD)
    2002 24 Superboat Step 250EFI (SOLD)
    1997 21 Checkmate Pulsare 200EFI Merc (Beater Boat)(SOLD)
    1994 20 Hydrasport 225 Optimax (SOLD)
    1998 27 progression Twin 225 Mercs (SOLD)
    2005 23 Kryptonite 300 Promax (SOLD)

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  17. #14
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    Quote Originally Posted by ghost28 View Post
    PC925s will definetly be fine for a day of use like u say....i always wire them up to have one starting and one house battery with an ACR between them to charge....this way if i kill the house i can still start the engine and let it charge everything up....
    Yep, this is what I was planning on installing

    Click image for larger version. 

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  18. #15
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    24M-XHD interstate. I put them in all the opti boats,and never had a problem. 800 cca 1000mca

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