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02-26-2008, 09:47 AM
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#1
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Registered User
 Gold Member
Join Date: Feb 2001
Location: Tampa, Indian Shores Beach
Posts: 3,301
Don't even mention the word boat
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Putting a larger battery in a Waverunner? Like a regular boat battery
Tired of always messing with a stupid little motorcycle battery in our waverunner. I was considering mounting a boat battery in it?? It is a 3 person and the battery is in the rear, plenty of room and we never have more than 2 people on it anyway.
So my question is will this hurt anything?? Their both 12 volt batteries one is just bigger and more amps??
Thanks
WILL?? 
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02-26-2008, 10:11 AM
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#2
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Marine Surveyor
 VIP Member
Join Date: Jan 2004
Location: Boca Raton, FL
Posts: 3,680
None
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You may have to reinforce the mountings so it stays put. Being bulkier and heavier it will exert more force on landings.
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02-26-2008, 10:14 AM
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#3
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Registered
Join Date: Feb 2006
Location: Tallahassee, FL
Posts: 1,302
1987 Donzi 22; 2008 Donzi 28 ZXO
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The main reason (beyond the light weight aspect) they use the smaller batteries is they are spill proof.
If you do hard turns, or should ever flip the ski over, you will be hosed with a standard battery. If you decide on a bigger one, make sure it's spill proof. Optima is probably the best choice...
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02-26-2008, 11:43 AM
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#4
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Platinum Member
 Platinum Member
Join Date: Jan 2004
Location: Houston, Texas
Posts: 481
Black Thunder
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We have 2 4-wheelers. One is a little older and has the small type battery. However, the other has a battery about twice the size of the lawnmower size battery. It is only about 1/2 the size of a car battery. Gel or absorbed glass (AG) is the way to go. If you go too large, the small engine battery charger on the waverunner may not be able to charge it.
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02-26-2008, 11:55 AM
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#5
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Registered User
Gold Member
Join Date: Feb 2001
Location: Tampa, Indian Shores Beach
Posts: 3,301
Don't even mention the word boat
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I was thinking of a small boat battery wich is about double the size of the battery in there.
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02-26-2008, 12:13 PM
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#6
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Forum Regulator
Join Date: May 2001
Location: Wanderer
Posts: 15,259
Active Thunder 37' & other Factory boats, 13' Mini Hawk
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Are you having a draining/dead battery issue?
How about just putting in a battery cutoff switch?
__________________
Brian T.
Active Thunder Factory Rep.
Web: ActiveThunderBoats.com
Email: brian(a)activethunderboats.com
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02-26-2008, 01:15 PM
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#7
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Happy to be here...
Platinum Member
Join Date: Jun 2005
Location: Central IL
Posts: 3,255
2004 Chaparral 260SSi
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Switch to an AGM type battery and/or simply unscrew the positive lead when the ski is going to sit for any amount of time. It literally takes less than a minute to unhook the battery. I would not add a larger battery.
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02-26-2008, 02:09 PM
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#8
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Registered
Join Date: Oct 2003
Location: Lake Stevens, Wa
Posts: 71
90 Cougar 25 MTR
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You could go to the biggest (Harley) motorcycle battery. Not much bigger, but more cranking power. My bike can sit half the year and will start right up when I want to go.
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02-26-2008, 04:59 PM
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#9
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Registered User
Gold Member
Join Date: Feb 2001
Location: Tampa, Indian Shores Beach
Posts: 3,301
Don't even mention the word boat
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cut off switch is not a bad idea, I had been unhooking it but the computer and crap has to be reset each time and its a hassle. Basically the computer has got to be draining it when it sits for more that 3 weeks.
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02-26-2008, 09:12 PM
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#10
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Registered
Join Date: Jul 2007
Location: San Diego
Posts: 933
Advantage 28ft Sport Cat w/ pair of 8's
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Yerp, a cut off switch is the way to go. The computers have just enough draw to kill a battery in a month or so. Install the switches and be done with the problems.
Darrell.
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