Battery requirements ?

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Nevada Mike
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Battery requirements ?

Unread post by Nevada Mike »

Good Saturday morning,

Here I sit in lockdown pondering upgrades to the boat I have not seen since it was a wee lad on the factory floor. I have a 250 Alaskan with the drum winch and a Discovery Bay pot puller. The boat was supplied with 2 Interstate 34 AGM batteries. The motor will always be running when either the puller or winch are in use. Is there any reason to add a third battery while the others are new? Both the drum winch and pot puller are a totally new things to me so I don't know what to expect. The winch will be used almost every time I go out in 200-300ft of water and the pot puller will get occasional use. Thanks in advance y'all.
Last edited by Nevada Mike on Sun May 24, 2020 5:32 am, edited 1 time in total.

Saltyduck
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Re: Battery requirements ?

Unread post by Saltyduck »

Brand new the batteries should suffice. As they get older is when you might have some issues. My boat also came with the same batteries as you have and i have had no issues, but as paranoid as I am I do have a third battery, totally isolated from the other two, just in case I do something stupid like forget to keep the batteries charged during the off season. I have been behind a boater who just launched his boat and only then found out his batteries are dead and now is in everybody's way in the dock. I dont want to ever be the focus of that much hate.
My plan is to keep the current batteries until they are 5-6 years old then replace them with northstar batteries. Also going up to the 31 size. That essentially gives me a third battery over the 34 size.
What you have to do is get the specs on amp draw for your accessories and compare them to what your batteries can dish out. also see what amps the motor is giving your batteries while it is running. Compare what is going out to what is coming into your batteries and you will know where you stand

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rwiley
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Re: Battery requirements ?

Unread post by rwiley »

I recently upgraded both my batteries with Odyssey Group 31 AGM's which are highly rated and manufactured in the midwest. I purchased them from Battery Outfitters for far less than I could find them anywhere in the country. They are located next to the plant where the batteries are manufactured! They are still very pricey, $791 for two delivered. They shipped them quickly, super well protected and far cheaper than anywhere near me. Here is the guy i worked with. Caleb Skaggs – Manager – St. Louis p: 636.922.7144 m: 417.365.4320 f: 636.922.7446.
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Re: Battery requirements ?

Unread post by SilverFox »

Shouldn't matter unless you're using them in series like for a trolling motor bank. ;)
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Nevada Mike
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Re: Battery requirements ?

Unread post by Nevada Mike »

Thanks for the comments. I sounds like I will stick with what I have. Rwiley those will be my replacement batteries but logistics to an island in Alaska gets complicated and expensive.

MacGyver
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Re: Battery requirements ?

Unread post by MacGyver »

Nevada Mike wrote:
Sun May 24, 2020 8:38 am
Thanks for the comments. I sounds like I will stick with what I have. Rwiley those will be my replacement batteries but logistics to an island in Alaska gets complicated and expensive.
For the first year, You might want to carry a spaire battery in a battery box and a set of jumper cables in case there a problem with the wiring.

Nevada Mike
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Re: Battery requirements ?

Unread post by Nevada Mike »

I have the new Yamaha 25 fuel injected with a pull start and a decent charging system. Hopefully I won't need to kicker home.

MacGyver
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Re: Battery requirements ?

Unread post by MacGyver »

When it comes to outboard motors the two things you never have enough of is fuel and charging current.

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Re: Battery requirements ?

Unread post by Nate »

Good point MacGyver.

Not familiar with the fi 25. Hear they have a better charge system. Wonder if you can pull start it with a dead battery? And if it’s enough to charge the dead battery?
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