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Started By
Message
Marine Starting Battery vs Regular Car Battery
Posted on 5/10/22 at 11:02 am
Posted on 5/10/22 at 11:02 am
Is there a difference between the two or is it like other things where they slap "marine" on it and charge $50 more?
My trolling motor batteries are fine, so I don't need deep cell, just starting batteries. I'm looking to either save some money, or just buy a better quality battery for the same price. But if there is a serious difference and I shouldn't just use a car battery, I will go with the marine ones. Also, I'm looking to take the boat out this weekend, so availability of a marine battery vs car battery may be an issue.
My trolling motor batteries are fine, so I don't need deep cell, just starting batteries. I'm looking to either save some money, or just buy a better quality battery for the same price. But if there is a serious difference and I shouldn't just use a car battery, I will go with the marine ones. Also, I'm looking to take the boat out this weekend, so availability of a marine battery vs car battery may be an issue.
5
Posted on 5/10/22 at 11:04 am to shadowlsu
depends on the models. from what i have read the blue top (marine) optima has the CCAs of a starter battery but is able to be discharged to a lower level without damaging the cells.... kinda like a yellow top(deep cycle)
Posted on 5/10/22 at 11:14 am to shadowlsu
Sam's Duracell AGM should work for you.
Posted on 5/10/22 at 11:24 am to shadowlsu
there is a difference
+1 on the Sam's duracell they are good batteries for the price
+1 on the Sam's duracell they are good batteries for the price
This post was edited on 5/10/22 at 11:25 am
Posted on 5/10/22 at 12:16 pm to MorningWood
I have the Duracell AGM, it is an OK battery if it works for your motor. It simply can't handle bigger motors, not well and not for long. I have a Yamaha F150 and it is fine for that, if it was a bigger I would just look for a Deka/Penn made battery with the appropriate specs.
To get the proper specs you probably need to stay with a marine battery, a car battery might very well start your boat but it won't hold up to the other tasks that a proper marine agm deep cycle battery will handle. I wouldn't even consider a non AGM battery but if you want short battery life and cheap that is an option. I personally rather change that battery as few times as possible over the life of the boat.
To get the proper specs you probably need to stay with a marine battery, a car battery might very well start your boat but it won't hold up to the other tasks that a proper marine agm deep cycle battery will handle. I wouldn't even consider a non AGM battery but if you want short battery life and cheap that is an option. I personally rather change that battery as few times as possible over the life of the boat.
Posted on 5/10/22 at 2:38 pm to shadowlsu
I had a barely used diesel car battery when I bought my boat that I used for the starting battery and it's working just fine a year in.
No issues with it appearing damaged from draining down to near zero, runs my GPS and baitwell all day just fine with no cranking issues.
I do carry two battery backup jumpers with me just in case, but I've only needed them once when I didn't realize my kid played in the boat and killed the battery.
Just my two cents, but you are better off spending the big money on the trolling motor battery.
No issues with it appearing damaged from draining down to near zero, runs my GPS and baitwell all day just fine with no cranking issues.
I do carry two battery backup jumpers with me just in case, but I've only needed them once when I didn't realize my kid played in the boat and killed the battery.
Just my two cents, but you are better off spending the big money on the trolling motor battery.
Posted on 5/10/22 at 2:49 pm to armsdealer
quote:
Yamaha F150
That's what I have as well. Thanks for all the input, I think I'm just going to stick with the marine battery since I'll be operating GPS, radio, and other accessories with the motor shut off.
Posted on 5/10/22 at 2:51 pm to armsdealer
quote:
if you want short battery life and cheap that is an option.
I have been known to use an auto battery for a starting battery. It's cheaper and you get a 3 year free replacement warranty vs 1 year with marine. If the auto battery dies I can start the motor using my jump pack or jumper cables using the deep cycle battery. My batteries usually die to lack of use/maintenance. If it dies at 2 years and 11 months I consider that a bonus
All my boating is inshore on busy inland lakes and waterways.
Posted on 5/10/22 at 3:18 pm to shadowlsu
quote:
That's what I have as well. Thanks for all the input, I think I'm just going to stick with the marine battery since I'll be operating GPS, radio, and other accessories with the motor shut off.
The Sam's Duracell is perfect for that, I use the group 31 agm for a 10" gps, VHF radio, dual poles, lights, pumps, etc.
Posted on 5/10/22 at 3:24 pm to shadowlsu
quote:
Is there a difference between the two or is it like other things where they slap "marine" on it and charge $50 more?
I'm sure there aren't any internal differences. I use normal dual purpose equipment batteries, and my current set is almost 6 years old.
Batteries exist in only 3 states: charging, discharging, and busted. Onboard chargers, and minimizing the beating and banging are the secrets to long battery life.
Posted on 5/10/22 at 4:45 pm to DownshiftAndFloorIt
quote:
I'm sure there aren't any internal differences.
But there are...
You do understand a cranking battery is different than a dual purpose battery that is different from a deep cycle and they all come with different chemistries like lead acid, agm, lifepo4????
Some batteries are fine to drain down to 20% every use, some will die after a few cycles, because they are different.
Posted on 5/10/22 at 5:24 pm to armsdealer
quote:
You do understand a cranking battery is different than a dual purpose battery that is different from a deep cycle and they all come with different chemistries like lead acid, agm, lifepo4????
Nope, sure didn't.
The question was specifically automotive cranking batteries vs "marine" cranking batteries, between which I doubt there is any actual difference.
Posted on 5/10/22 at 8:26 pm to armsdealer
It simply can't handle bigger motors, not well and not for longThe 31 can, and can do it well.
Posted on 5/10/22 at 9:07 pm to AlxTgr
I know you can crank a 6.7 cummins on a single fresh group 31 regular ol non marine cranking battery.
People treat their cranking batteries like shite (sit all winter, barely ever used, etc) and thats why they crap out early in life.
People treat their cranking batteries like shite (sit all winter, barely ever used, etc) and thats why they crap out early in life.
Posted on 5/11/22 at 3:47 pm to DownshiftAndFloorIt
Mine gets plugged in as soon as I get home and stays on a Minn Kota PC 24/7.
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