Marine Battery for Car?

[padam]

I need a new battery for my car.
I have the battery in the trunk and prefer something big and heavy to help with traction.
I used a deep cycle battery before and it worked fine.
Walmart has a big Group 27M with 800 cca.
Does anyone see a reason I shouldn’t use it?

 

[Vaanth]

I need a new battery for my car.
I have the battery in the trunk and prefer something big and heavy to help with traction.
I used a deep cycle battery before and it worked fine.
Walmart has a big Group 27M with 800 cca.
Does anyone see a reason I shouldn’t use it?


View attachment 1828628View attachment 1828629

Marine batteries are also deep cycle batteries. The "DC" in the group size 27DC also infers this. Deep cycle/marine batteries can be more tolerant of longer times between starts, if the car sits for a while between uses. It should be fine for your application.

 

[RemCharger]

Is there some reason a boat battery is better for an automobile than an automobile battery?

 

[RJRENTON]

Is there some reason a boat battery is better for an automobile than an automobile battery?

Perhaps, if your car sinks, the marine/boat battery won't be affected???......
BOB RENTON

 

[padam]

Is there some reason a boat battery is better for an automobile than an automobile battery?

I do go for long periods without starting it.
It has stud terminals which match my cables.
It's got high cranking amps and is $40 cheaper than the car battery.

Perhaps, if your car sinks, the marine/boat battery won't be affected???......
BOB RENTON

I think the real question is, if it sinks, is it better to be electrocuted or eaten by sharks?

 

[RJRENTON]

I do go for long periods without starting it.
It has stud terminals which match my cables.
It's got high cranking amps and is $40 cheaper than the car battery.


I think the real question is, if it sinks, is it better to be electrocuted or eaten by sharks?

One cannot be electrocuted by 12 volts.....so the correct answer must be eaten by sharks.....the Great White or ???.....
BOB RENTON

 

[RemCharger]

I do go for long periods without starting it.
It has stud terminals which match my cables.
It's got high cranking amps and is $40 cheaper than the car battery.

I'm not selling anything to anyone but I will say this;
My 64 is parked in late Sept after race season. I'll go start it in April. With the cables still connected. That's a long -40 nap. Starts every spring. With zero draw, the battery will be fine.
The terminals could be bolted to a post connection.
The last gold series batt I bought had 850 CCA.
Personally I'd be happy spending the last 40, knowing what I have is the best choice.
Marine/DC batteries are different for various reasons and operating conditions. They generally aren't happy with automotive charging systems.

 

[padam]

I'm not selling anything to anyone but I will say this;
My 64 is parked in late Sept after race season. I'll go start it in April. With the cables still connected. That's a long -40 nap. Starts every spring. With zero draw, the battery will be fine.
The terminals could be bolted to a post connection.
The last gold series batt I bought had 850 CCA.
Personally I'd be happy spending the last 40, knowing what I have is the best choice.
Marine/DC batteries are different for various reasons and operating conditions. They generally aren't happy with automotive charging systems.

These are all valid points.
If marine batteries are not happy with automotive, that's the info I'm looking for.
I think I still have the post adapters.

The problem I have, is real world information on which batteries are best is tough to find.
From what I have seen, name brand batteries aren't necessarily better. I don't mind spending good money on a top quality product, but I don't trust any manufacturers these days.

 

[pnora]

Is there some reason a boat battery is better for an automobile than an automobile battery?

It floats.

 

[QuickBpBp]

Marine/DC batteries are different for various reasons and operating conditions. They generally aren't happy with automotive charging systems.

Can I ask why they are not happy? The boat next to my father's when I was young was a 30ft Luhrs and had twin 318's and literally had the same charging system as car. They looked just like this engine. My father's boat had twin 454's which used a very similar automotive charging system then he converted to twin Cat 3208's which used similar charging. I ask because I am always willing to learn as I never heard it being an issue.

 

[BeatersRus]

One cannot be electrocuted by 12 volts.....so the correct answer must be eaten by sharks.....the Great White or ???.....
BOB RENTON

we can tell this guys never been zapped by a coil because you most certainly can see God for a moment if you did. ;)

also,ive never heard anything about a deep cycle battery hurting a car,and we use them in Everything,heavy equipment,cars,trucks,the vans,etc etc.

the main advantages are as stated,its usually Cheaper than whatever your car truck van battery will cost,sometimes even a Hundred cheaper.
helluva scam imo when its the same battery dimensions/marine/versus car/and yet costs way more for the " correct application "

id like to hear more about this happiness thing...??

 

[RR Fan Dan]

Can I ask why they are not happy? The boat next to my father's when I was young was a 30ft Luhrs and had twin 318's and literally had the same charging system as car. They looked just like this engine. My father's boat had twin 454's which used a very similar automotive charging system until he converted to twin Cat 3208's. I ask because I am always willing to learn as I never heard it being an issue.

View attachment 1828739

Being a boat guy myself, and living on the Chesapeake Bay, I had the same question. Most of the time when you go get a “marine” grade part for your engine and pay 3x as much as what NAPA charges for the equivalent car part, there is nothing marine grade about it. It’s the same part you could have got at NAPA. I learned that lesson a long time ago. Marine batteries are deeper cycle but they do need to stay on a trickle charge when stored for the winter. I don’t see any reason why you couldn’t use a marine battery. It’s unusual for a marine battery to be cheaper than a car battery, so I say go for it. You’re getting a better battery for a lesser price

 

[pnora]

I need a new battery for my car.
I have the battery in the trunk and prefer something big and heavy to help with traction.
I used a deep cycle battery before and it worked fine.
Walmart has a big Group 27M with 800 cca.
Does anyone see a reason I shouldn’t use it?


View attachment 1828628View attachment 1828629

Just do a simple google search difference between a car battery to a marine battery and make your own decision. Marine Battery vs. Car Battery: A Comparative Analysis

 

[33 IMP]

I've had some pretty poor results (longevity-wise) from deep cycle batteries. I would not discourage anybody from trying it. They might have better luck than me.

 

[RemCharger]

Treed me.
Can You Use a Marine Battery in a Car?

 

[33 IMP]

I do go for long periods without starting it.
It has stud terminals which match my cables.
It's got high cranking amps and is $40 cheaper than the car battery.


I think the real question is, if it sinks, is it better to be electrocuted or eaten by sharks?

Your reasons to try it are perfectly valid. Give it a shot.
Edit. I also still have stud ends on my cables. They work fine with a stud and nut setup on a side mount battery too.

 

[RemCharger]

Marine batteries aren't meant to charge at high amps and volts like a car battery.

 

[QuickBpBp]

Treed me.
Can You Use a Marine Battery in a Car?

I don't know if I would trust that article as it says this about deep cycle batteries..

• Poor Recovery from Drain: Marine batteries, particularly deep cycle models, may not recover well if you accidentally leave car electronics on and fully drain the battery.

When in fact a deep cycle is made just for that purpose think trolling motor.... I run mine dead many times with-out issue.

Deep cycle marine batteries are good for powering marine accessories1. They are designed to undergo repeated cycles of deep discharge and recharge, making them suitable for applications where deep discharge is frequent, such as marine, RV, solar, and off-grid systems2. They provide reliable and consistent power for marine vessels, withstanding extreme conditions like vibration and frequent discharging of an onboard trolling motor3. These batteries are designed for longevity and durability, capable of providing sustained power over extended periods4. They can withstand many charges and discharges, making them suitable for scenarios where regular, deep discharges occur

 

[padam]

I don't know if I would trust that article as it says this about deep cycle batteries..

• Poor Recovery from Drain: Marine batteries, particularly deep cycle models, may not recover well if you accidentally leave car electronics on and fully drain the battery.

When in fact a deep cycle is made just for that purpose think trolling motor.... I run mine dead many times with-out issue.

Deep cycle marine batteries are good for powering marine accessories1. They are designed to undergo repeated cycles of deep discharge and recharge, making them suitable for applications where deep discharge is frequent, such as marine, RV, solar, and off-grid systems2. They provide reliable and consistent power for marine vessels, withstanding extreme conditions like vibration and frequent discharging of an onboard trolling motor3. These batteries are designed for longevity and durability, capable of providing sustained power over extended periods4. They can withstand many charges and discharges, making them suitable for scenarios where regular, deep discharges occur

All of the qualities attributed in the article to Marine batteries seem desirable for a race car.
Except that they aren’t meant for starting lol.

 

[pnora]

I don't know if I would trust that article as it says this about deep cycle batteries..

• Poor Recovery from Drain: Marine batteries, particularly deep cycle models, may not recover well if you accidentally leave car electronics on and fully drain the battery.

When in fact a deep cycle is made just for that purpose think trolling motor.... I run mine dead many times with-out issue.

Deep cycle marine batteries are good for powering marine accessories1. They are designed to undergo repeated cycles of deep discharge and recharge, making them suitable for applications where deep discharge is frequent, such as marine, RV, solar, and off-grid systems2. They provide reliable and consistent power for marine vessels, withstanding extreme conditions like vibration and frequent discharging of an onboard trolling motor3. These batteries are designed for longevity and durability, capable of providing sustained power over extended periods4. They can withstand many charges and discharges, making them suitable for scenarios where regular, deep discharges occur

One has to make their own decision as there are differences between the design and intended use. There is also a difference between a deep discharge and a total discharge. Myself I would pick a battery for automotive and one for marine. However if I had the need and the battery was at hand I would use it.