car battery or marine starting

[kevfish1]

what would be the difference between a marine starting and car battery????

[BobT]

I did a quick search and the information I found seems to suggest as I suspected. Marine batteries are basically dual-purpose batteries. They have characteristics of both deep-cycle and starting batteries. Kinf of a middle-of-the-road battery.

[fivebucks]

but there both marine starting and marine deep cycle. I don't know the answer to the question, just throwing more fuel on

[walleyemaniac]

I think the differance between the marine deep cycle and the marine starting is the reserve capacity. The start batteries usually don't have as much reserve.

The differance between a regular car battery and a marine start battery is a regular car battery isn't designed to run asseccories for extended periods of time like a marine battery will. That, and they won't hold up to the discharge and recharging that a deep cycle will. You'll have a way shorter battery life with a regular car battery.

[BobT]

I think the differance between the marine deep cycle and the marine starting is the reserve capacity. The start batteries usually don't have as much reserve.

The differance between a regular car battery and a marine start battery is a regular car battery isn't designed to run asseccories for extended periods of time like a marine battery will. That, and they won't hold up to the discharge and recharging that a deep cycle will. You'll have a way shorter battery life with a regular car battery.

You've just described a dual-purpose battery.

[Ed Carlson]

The duel purpose battery in the marine class will give you more flexibility of use, to balance your needs with electronics and live wells and the like....and still crank the motor over as needed.

A pure starting battery is made for cranking amps, and do not hold up well to steady demand use by electronics and accessories.

Don't skimp on it, jump up one class as to allow yourself room for expansion of demand on the system, more reserve capacity storage and cranking amps is always wise.

You will not regret having too much capacity on hand, I guarantee you will regret having too little.

[BobT]

Great advise, Ed.

[SkunkedAgain]

Quote:

The differance between a regular car battery and a marine start battery is a regular car battery isn't designed to run asseccories for extended periods of time like a marine battery will

Car batteries are made to handle the load of accessories. Your headlights, car stereo, dashboard lights, cigarette lighter/phone charger, and others are all running off of your car battery, the same as they are on your boat.

The real difference is how the alternators are recharging that battery. You car's alternator keeps a constant charge on the battery when running, even if you sit at idle with your headlights, stereo, and everything else running. Your boat needs to run (essentially) on plane to provide enough juice to your starting battery to recharge after running things like a radio.

A marine starting battery's, as stated by BobT, design purpose is to be between that of a car battery (constant charge) and a deep-cycle (infrequent charge).

[upnorth]

My understanding of Marine starting batteries is they are built a little tougher to take the repeated pounding and constant bouncing of being in a boat. Something about the way the anchor the plates. This is from way back and newer car batteries may be up to snuff today, but back then.....