marine batteries/car battery diffrence?

[merriman16]

My friend and i had an arguement about if there is a diffrence between using a car battery to run your troller or a marine battery any incite??

 

[Silvertip]

Re: marine batteries/car battery diffrence?

The label is different!!!!! But there are three types of marine batteries, not just one. There is a Marine Starting battery, a Marine/RV Deep Cycle, and a Marine Dual Purpose (starting/deep cycle). As for the difference between auto and marine there are distinct differences. You can actually see the difference. Auto batteries have side terminals or the large conventional posts for attaching the battery cables. Marine batteries have posts and threaded studs for attachment of battery and accessory cables. Ever see an 8 gauge boat harness with a post style battery clamp??? Marine starting batteries are built slightly different than auto batteries since they are subject to a great deal more shock and vibration. Marine or Auto starting batteries are not intended for trolling motor service as deeply discharging them will kill them. Deep Cycle batteries are intended for trolling motor/accessory/RV use. Dual purpose batteries can serve as starting and deep cycle although like everything else, they are a compromise between both services. With this info, who wins the debate??

 

[merriman16]

Re: marine batteries/car battery diffrence?

Well first off thanks for the reply and to answer your question who wins im gona say me haha. I didnt think he should be using a starting battery but i didnt know it will ruin them to run them dead i guess hes gonna have to buy a new batt for his troller thanks a lot.

 

[bruceb58]

Re: marine batteries/car battery diffrence?

Well first off thanks for the reply and to answer your question who wins im gona say me haha. I didnt think he should be using a starting battery but i didnt know it will ruin them to run them dead i guess hes gonna have to buy a new batt for his troller thanks a lot.

Starting batteries have thinner plates to maximize the amount of area that the electrolyte sees. Deep cycle have thicker plates. The thinner plates allow more current to be delivered but will degrade easier under higher discharge conditions.

Running a deep cycle battery until they are dead will also ruin them...just may take a little while longer. You should never discharge a deep cycle battery below its 50% capacity point which is around 12.0V.