Battery Advice

WinAlign58

Recruit
Joined
May 27, 2022
Messages
4
I have a Sea Hunt Gamefish with twin Yamaha 150's and Simrad Electronics including a 4K radar. It is time to replace my batteries. I contacted Sea Hunt and they told me they install Interstate Group 27 1000MCA, 800CCA batteries, (3 in parallel). I live on the Mississippi Gulf Coast and would likely never be using my boat in cold weather. Not completely understanding the battery requirements, I am considering replacing them with 650CCA batteries from Sam's. This is within the requirements for the Yamaha engines, but I'm concerned that I may be shortchanging myself in terms of the other electronics on the boat. I usually do not run the radar at anchor. Opinions? Advice?
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,081
If you don’t understand marine battery requirements, why are you ignoring the professionals and proposing to cut available power by almost 50%?

Bare minimums are just that, bare minimum to crank and power the engine. This doesn’t take into account any peripherals onboard nor does it leave you any reserve should you issues at sea.

Also doesn’t allow for much battery aging (deterioration) before the output drops below min requirements.

I run two of the same InterState grp 27 batteries on my single engine boat.

Same (grp 24) 650 min. requirement as your motors. Couldn’t make it through a 6-8 hour day on the troll running a full compliment of electronics.

Spending the extra $25 for a battery buys a piece of mind if nothing else
 

WinAlign58

Recruit
Joined
May 27, 2022
Messages
4
If you don’t understand marine battery requirements, why are you ignoring the professionals and proposing to cut available power by almost 50%?

Bare minimums are just that, bare minimum to crank and power the engine. This doesn’t take into account any peripherals onboard nor does it leave you any reserve should you issues at sea.

Also doesn’t allow for much battery aging (deterioration) before the output drops below min requirements.

I run two of the same InterState grp 27 batteries on my single engine boat.

Same (grp 24) 650 min. requirement as your motors. Couldn’t make it through a 6-8 hour day on the troll running a full compliment of electronics.

Spending the extra $25 for a battery buys a piece of mind if nothing else

If you don’t understand marine battery requirements, why are you ignoring the professionals and proposing to cut available power by almost 50%?

Bare minimums are just that, bare minimum to crank and power the engine. This doesn’t take into account any peripherals onboard nor does it leave you any reserve should you issues at sea.

Also doesn’t allow for much battery aging (deterioration) before the output drops below min requirements.

I run two of the same InterState grp 27 batteries on my single engine boat.

Same (grp 24) 650 min. requirement as your motors. Couldn’t make it through a 6-8 hour day on the troll running a full compliment of electronics.

Spending the extra $25 for a battery buys a piece of mind if nothing else
I appreciate your reply. But Sea Hunt sells boats all over the United States that would include much colder weather than I will ever experience. So it follows that they should address that as they equip boats for shipment. In addition, I don't believe I have ever had my boat out below 50 degrees much less freezing weather, nor do I have a trolling motor. I'm not ignoring the professionals, but I haven't found batteries that meet that spec for less than 3-4 times the price.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,574
Batteries are one thing i would not skimp on
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,081
I appreciate your reply. But Sea Hunt sells boats all over the United States that would include much colder weather than I will ever experience. So it follows that they should address that as they equip boats for shipment. In addition, I don't believe I have ever had my boat out below 50 degrees much less freezing weather, nor do I have a trolling motor.
Where they sell boats has nothing to do with battery sizing whatsoever. It’s all about having enough power onboard to start and run the boat when push comes to shove.

You add up the needs/requirements of both power and accessories and apply a safety factor for worst case scenarios.

Bare minimum to start your motor…..512 CCA with 182 minute RC.

What safety factor are you comfortable with?

Can’t call a tow truck to jump you offshore. Your on your own.

I'm not ignoring the professionals, but I haven't found batteries that meet that spec for less than 3-4 times the price.
The batteries as specified are $150 each. Do you really want to depend on $40 batteries when push comes to shove?
 

WinAlign58

Recruit
Joined
May 27, 2022
Messages
4
Where they sell boats has nothing to do with battery sizing whatsoever. It’s all about having enough power onboard to start and run the boat when push comes to shove.

You add up the needs/requirements of both power and accessories and apply a safety factor for worst case scenarios.

Bare minimum to start your motor…..512 CCA with 182 minute RC.

What safety factor are you comfortable with?

Can’t call a tow truck to jump you offshore. Your on your own.


The batteries as specified are $150 each. Do you really want to depend on $40 batteries when push comes to shove?
That is perfectly fine. I just haven't found they at that price. can you tell me where?
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Batteries are like buckets of electricity. You can buy small buckets, medium buckets, large buckets and OMG buckets. You can "never" have too much power but you can have too little. On the water you want the biggest buckets of juice you can afford and have room for.
 

H20Rat

Vice Admiral
Joined
Mar 8, 2009
Messages
5,203
I wouldn't get hung up on brand. Very likely the Interstate battery and the Walmart are made side by side in a Johnson controls factory. In fact, my oldest battery in any vehicle I have right now is a dirt cheap Walmart Value Power.

But with the said, stick with the recommendations for the size of the batteries though.
 
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