Marine Battery Information

longstand

Petty Officer 1st Class
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May 2, 2009
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293
I was shopping around Walmart and i seen a BIG battery. the cracking is 1000 and the other is high also.

Would this work for my Marine application... i dont see why it will not work. its just a regular engine.

the battery i have now is still good. but iam planning of putting 2 new battery. i have space on the Starboard side compartment and iam going to wire all 4 battery together.

will my alternator charge them up??

i know its alot of battery to charge. but every trip i will have to charge all the battery to FUll charge anyway.

the cracking range i assume the higher the better..


What doest it mean The cracking is 1000. and COLD start is around 1000 Also..

sorry but i cant figure out what its name . Cracking COLD.. or COLD start. help out on this TYPO
 

Godfirst

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Aug 11, 2008
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Re: Marine Battery Information

Hi I would only consider a marine application battery as they are designed for marine conditions......
 

Gary H NC

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Dec 1, 2005
Messages
8,972
Re: Marine Battery Information

Its the Cranking amps the battery will provide even during cold weather conditions.
As far as the internals of a marine cranking battery and a regular car battery...probably not much of a difference.
 

Dshow

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Jan 1, 2007
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Re: Marine Battery Information

Don't know much about big boats, but is 4 batteries overkill? What are you trying to achieve, faster cranking or just backup power so you can play the stereo with the engine off and not worry about killing the batteries?
 

longstand

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Re: Marine Battery Information

Don't know much about big boats, but is 4 batteries overkill? What are you trying to achieve, faster cranking or just backup power so you can play the stereo with the engine off and not worry about killing the batteries?

well. i will have two new battery that will replace the old battery. so i have two battery that still good... What iam going todo with that?? leave it in a area where it will not be used.. No. i will install it on the starboard side of the engine compartment and secure it and run the wires..


well.. i guest i want to be able to run the music while the engine is off.
 

Fishermark

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Oct 19, 2003
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5,617
Re: Marine Battery Information

well.. i guest i want to be able to run the music while the engine is off.


More important than a "marine" battery is to have a deep-cycle battery that you use when you run accessories with the engine off. It is designed to be discharged and then recharged. A starting or cranking battery is not designed to be continually discharged and recharged.
 

milehighboater

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Jul 28, 2009
Messages
235
Re: Marine Battery Information

I have had terrible luck with wal-mart batteries. They might have a long warranty but you will end up replacing them within the warranty. Save your time and get a good Interstate battery. I have replaced my wal-mart cranking battery 3 times in 10 years and the Interstate deep cycle is still pushing my trolling motor for the 11th year. I will replace it this winter but it has had a great run. Plus aggrivation on the water because of a dead battery is not worth the 30 dollars you will save on a cheap battery.
 

Silvertip

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Sep 22, 2003
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28,771
Re: Marine Battery Information

I assume you plan to wire all four of these batteries in parallel without any switching capability. If that's the case, I hope your engine has a huge alternator. An outboard would have to run wide open for hours (maximum alternator output) to keep those batteries topped off. Then when not being used, the older batteries will tend to equalize the entire system so they will suck current fromt he good batteries until all are equal. In summary, this is not a good idea.
 

longstand

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May 2, 2009
Messages
293
Re: Marine Battery Information

I assume you plan to wire all four of these batteries in parallel without any switching capability. If that's the case, I hope your engine has a huge alternator. An outboard would have to run wide open for hours (maximum alternator output) to keep those batteries topped off. Then when not being used, the older batteries will tend to equalize the entire system so they will suck current fromt he good batteries until all are equal. In summary, this is not a good idea.

Is there a device that would allow my alternator to magnify the charge. so it will be able to charge all battery at Engine normal RPM?
 

fishrdan

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Jan 25, 2008
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6,989
Re: Marine Battery Information

Is there a device that would allow my alternator to magnify the charge. so it will be able to charge all battery at Engine normal RPM?

A high current alternator and heavy gauge wire from the alt to starter.
 

longstand

Petty Officer 1st Class
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May 2, 2009
Messages
293
Re: Marine Battery Information

A high current alternator and heavy gauge wire from the alt to starter.

is there any other way beside buying a new alternator??

is there some kind of a device.
 

Philster

Captain
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Sep 15, 2009
Messages
3,344
Re: Marine Battery Information

You can't make your alternator put out more charging juice via a 'device'.
 
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