Best Dual Purpose Marine Batteries to Power Fishing Boats

1. Our Top Pick: Odyssey 31M-PC2150ST-M TROLLING Thunder Marine Dual Purpose Battery

Now here’s a great dual purpose marine battery from Odyssey!

This beauty has 2 times the overall power and 3 times the lifespan of traditional marine batteries.  You could get up to 10 years out of it, depending on usage.

It offers a staggering 1150 cold-cranking amps, so with this in your fishing boat, you’ll never be left stranded in the water, and will always be able to get the motor running.

It also has a much longer cycle life compared to traditional deep cycle batteries, up to a whopping 400 cycles at 80 percentage depth of discharge.  You also get a high stable voltage for longer periods than you would with a conventional deep cycle battery.

And as well as getting plenty of motor power you also get all the power you need for all your on-board electronic accessories.

It recharges really quickly and efficiently too, better than any other comparable battery on the market today.  You can reach a full charge in just 4 to 6 hours.

Its dimensions are just 16.8 x 11.1 x 11.9 inches, so it’s a little bulky, and it weighs in at 77.8 pounds.

It’s an AGM battery, which is an important thing to look for in your dual-purpose marine battery – more on that in our buying guide, coming up later.

This Odyssey battery offers 40 percent more reserve capacity than the six-pack design counterparts available today, with its total reserve capacity coming in at 205 minutes, so running your onboard gadgets is no problem at all.

It has a good solid construction, with a vibration-resistant design that protects against any high impact shock and/or mechanical vibration.  It can handle extreme temperatures too and even operate at -40 degrees centigrade.

2. SuperBatt AGM1100 12V 120AH (100AH & 110AH) Heavy Duty Ultra Deep Cycle VRLA AGM Leisure Marine Battery

What we love about this dual-purpose AGM battery from SuperBatt is it’s affordability, coming in at a fraction of the price than some of the others in our Top 5 picks.

This Ultra Deep Cycle battery offers 4 times more cycles than a standard Leisure Battery.

This SuperBatt battery offers 850 cold-cranking amps, which will be more than enough for what you need to get the boat’s engine going when you need it to.

And there’s a capacity of 120AH to run all your boat’s electronics from your fish finders to your GPS system.

Its dimensions are 353mm x 175mm x190mm.  And, importantly, it’s an AGM battery (more on that in our buying guide).

It’s Fully Sealed and Spill-proof making it completely safe to use.

The other great thing about this battery is the warranty – it lasts for an entire 3 years in total.

3. Trojan T27-AGM 12V 89Ah Group 27 Dual Purpose Deep Cycle Battery

This grezt little AGM dual-purpose marine battery comes from Trojan, a world leader in deep cycle battery technology.  They are known for their battery’s performance over the long-term.

It’s 12 inches long, 6.6 inches wide, and 8.1 inches high, so it’s fairly compact and weighs 64 pounds.

This Trojan battery offers 550 cold-cranking amps, which should be more than enough for what you need to get the boat’s engine going.

And it has a really long reserve capacity to boot, this battery can run for a full 158 minutes before it will drop below the minimum voltage.  That means it can provide plenty of juice for running all the gadgets on your fishing boat

It’s an AGM battery which is just what you need (more on that in our buying guide).  And beyond that, it’s particularly well designed and there’s a reduced risk of corrosion and deterioration of parts.

4. Topeak Bikamper One-Person Bicycling Tent

This is an excellent dual-purpose AGM marine battery from Northstar!

It falls within the pricier range of the spectrum, but for the extra cost, you get features that you just don’t get in other AGM batteries, notably the faster recharge.  The Northstar AGM charges up to 100% faster than the large majority of its competitors at the same price point.

Its dimensions are 14 x 11 x 10 inches, which is kind of big, but many powerboat users feel it’s worth it.

With 1150 cold-cranking amps, the battery always turns over quickly, and you never need to worry about getting stranded out on the water.  You can always depend on it to fire up when you need it.

It has very high reserve capacity, this battery can run for a staggering 220 minutes before dropping below the minimum voltage.  That means it can provide plenty of juice for running all the electronics you have on your fishing boat.

It’s an AGM battery, which is one thing you should really look out for (see your buying guide for more information on that).

5. Exide EK700 Stop-Start 12V 70Ah 760CCA TYPE 096 AGM VRLA Car Battery

This is a great battery from Exide.  It may be described as a car battery but the manufacturer states that it can be used for a variety of purposes, including on fishing boats.

It offers excellent value for money and has seen some really positive customer feedback.

It also offers 760 cold-cranking amps, for all of your power-hungry electrical equipment.

Although it’s of a fair size, it’s not too heavy.  Its dimensions are Length: 278mm x Width: 175mm x Height: 190mm, and it weighs just 136 grams.

It’s an AGM battery which is always what you should be looking out for in a dual-purpose marine battery.  (More on AGM batteries in our buying guide.)

It comes complete with a 3 Years Warranty against manufacturing faults and defects.