Batteries

[Holy Shamolee]

Trying to figure out if I need dual purpose batteries, or just starting batteries.
At most while jigging, my fishfinder might be on for an hour or so without the motor running.
Then there are the downrigger. They might get used the odd time without the motor running, but for the most part the motor is running when I use them.
I have a 19 ft Glasply. Just used for fishing. Removed the fridge and sink, so there would be no other draws on the battery other than the ones I mentioned.
I'm leaning towards straight starting batteries, but I would love to ear a few opinions before I actually purchase a couple batteries.
OH.... who makes the best battery.
Thanks
H.S.

 

[alldodge]

I don't see a need for anything other then one starter. Could have second as a backup

I like AGM bats
Best would be an opinion like Lifeline, Odyssey and Trojan but Sams club has these and use them also
https://www.samsclub.com/p/marine-27...e/prod21234614

 

[dingbat]

Starting batteries don't like to be discharged and recharged on a regular basis.

You would be better off going with a marine, dual purpose at a minimum. Go with the largest that will fit in the battery box.

 

[JimS123]

Absolutely need a dual purpose because of the high degree of discharge. I've had all different kinds, but the best battery I ever had considering longevity and cost performance was a marine battery from AutoZone.

 

[Holy Shamolee]

My boat is set up for 2 batteries. It has a perko switch, and an isolater. I am going to replace them both. Maybe one of each?

 

[achris]

My boat is set up for 2 batteries. It has a perko switch, and an isolater. I am going to replace them both. Maybe one of each?

For the load you're putting on them, a couple of quality MARINE batteries is all you need. To help extend the life of your batteries, when the boat's at home, just connect one of those small chargers to it (I use a ProJecta AC250B 1.6A). Leave the battery switch on 'BOTH' and both batteries are held at full charge.

My preferred battery, for both the boat (2 batteries) and the car (also 2 batteries) is a Bosch S5, N70ZZ.

 

[dingbat]

My boat is set up for 2 batteries. It has a perko switch, and an isolater. I am going to replace them both. Maybe one of each?

Depends on how the batteries where integrated into the electrical system.

Ideally, the “ignition“ is wired into one battery. The “house” load is wired into the second. If this is the case, the use of two different battery types might be in order, although I would use dual purpose or deep cycle batteries in both locations since they are less sensitive to depth of discharge

If the second battery is wired for redundancy, switch selects which battery is in use, it doesn’t matter one way or the other since in effect your just doubling hour battery capacity. Nothing gained using purpose specific batteries

 

[Faztbullet]

I suspect you have a Inboard ? All depends on what your taking out and capable of putting back in.. I sell the Stay-n-Charge system to a lot of Bass fishermen that charges battery's while towing up to 36V systems..

https://www.fishingminnesota.com/stay-n-charge/products.htm

 

[dingbat]

I sell the Stay-n-Charge system to a lot of Bass fishermen that charges battery's while towing up to 36V systems..

https://www.fishingminnesota.com/stay-n-charge/products.htm

Same concept used to charge breakaway batteries, but I question the “time to charge“ claim knowing the current limitations of OEM tow harness.

They also don’t give a specification on current ratings for the unit which is odd.

Do you know the answer to either question?

 

[Sprig]

Sounds like what you have currently works just fine. In my boat I use my down riggers a lot so I have a separate deep cycle battery just for my downriggers. I like having a second battery so if my main battery fails I have a backup.