Deep Cycle / Cranking battery

[Rick Hale]

A friend gave me a 2-year-old Interstate Deep Cycle/Cranking (SRM-27) Battery.



1st -- Can I hook this Deep Cycle/Cranking battery up in parallel with my 1-year-old

 

[Scott Hammer TOXIC]

Rick,



Hook it up to do what? Crank the big motor or as a TM batt?





TOXIC

 

[Rick Hale]

Morning Toxic,--How ya been??



I would like to hook up the Deep Cycle/Cranking battery up in parallel with my 1-year-old

 

[Mini]

If you have an open bank just hook em up as usual. Wont hurt a thing.



Also be aware that if you do hook on bank to two batteries that are in parallel it will take twice as long to charge as the amperage is divided between batteries.

 

[Aroldo Hernandez]

A friend of mine has a seperate battery for his electronic only. Not hooked up to his cranking motor so he will always have juice for the motor. And like Mini said your amps are going to go down as far charging the batteries. So a 5 amp will turn into a 2 1/2 is that what you want? Or get you a bigger 3-4 battery charger.

 

[Texas Transplant]

Well, what is said above is true to most degrees. Here is the rub. If one or the other of the deep cycle batteries is 'less' than the other (meaning not as good, failing, or providing less voltage/current) - your system (engine, pumps, etc.) is not going to work as well. The better battery is not really going to bring the other one up (long term), it will be more like the weaker battery bringing the other down.



As in, jumping off one car to another. After you hook them up, you generally have to accellerate the working vehicle engine to produce enough current/voltage to overcome the dead or failing battery.



In short, you might seem 'some' short term gains - but you are going to find you would be much better off simply getting a better cranking/deep cycle battery. Also, you are putting another large weight back in the bilge area.



Tex

 

[Jim in VA]

I would add that you may over tax the charging abilities of the charger as well. I have a Guest single bank charger that I hooked up to two trolling motor batteries wired in parallel (12v - not 24v). When I plugged in the charger, it would flash the green light only. Sue (formerly of Guest) told me that meant the charger was unable to provide sufficient charge to restore both batteries simultaneously. Sure enough, unhooked the batteries and had the charger on one at a time and it did fine after that. Seems you might have the same problem since you are using one of the 3 banks to try to charge up two batteries.

 

[Rick Hale]

Thanks,

That is what I thought.. Most likely will just stay with my newer Sarting Battery... Plus won't be adding 54# to the back end of the boat.

I don't think there is a way to really check out the Batteries to get them matched.



Thanks Again



Rick

 

[Marty Klein]

Most multiple battery issues can be resolved by fishing with skinnier backseaters. In fact there is an old song written about this very issue--"If you want to have power for the whole fishing day, get a skinny guy to fish with you ..." :wacko::lol::wacko::lol::wacko:

 

[Rick Hale]

Thanks For the info Marty.



If I were a good fisherman-- I only need to be on the water for a couple of hours anyway:lol::lol::lol:



Rick



PS: I'll be start on a diet today:lol:

 

[Marty Klein]

Just so you know Haledamage, my fat ass balances the weight of the batteries in the back. It is only if I add another fat ass on the rear deck that I have a problem with the front end raising up ... hmmm, didn't I read somewhere about a longer TM shaft ... :lol::wacko::lol::wacko::wacko::wacko:



Ditto on the improved fishing equaling less time on the water.