They use them not only as a 12V lifepo4 battery means of accessing otherwise unattainable fishing grounds but also for their stealth and vessel control capabilities. You want the motor to have enough thrust to propel your boat through the water at a steady pace without straining the motor or draining the battery too quickly. A good rule of thumb is to aim for 2 pounds of thrust per 100 pounds of weight on your boat, although this can vary depending on factors such as wind and current. “Marine” batteries – sometimes used as a synonym for “deep cycle,” marine batteries can consist of any of the other types, depending on their purpose. Intended for anglers who need one battery to do it all, these are not the best choice for a dedicated trolling motor battery.

Trolling Motor

This model is rated for extreme temperatures and should provide many years of reliable usage. There are cheaper trolling batteries you can buy, but very few are as robust as this model. Optima makes top-quality batteries, and that’s reflected in the price. You can buy cheaper, but you won’t be able to buy much better quality.

Vibration is also a problem for wet-cell batteries, and all the shaking and bumping on your boat will do them no favors. These batteries hold a charge well, but they are quite a bit more expensive than typical wet-cell alternatives, and they can be damaged by overcharging. Interstate Batteries’ excellent SRM series is also available in Group 31 sizes, delivering the same reliable performance as the smaller Group 27. This Group 27 battery isn’t a lightweight–a testament to its thick plates. With the dimensions of 11.4 x 6.8 x 7.4 and a weight of 26 lbs, this battery is a solid 12V choice for you. This one is the best battery to be connected in packs and series.

50ah Deep Cycle Marine Battery

The voltage is probably what stood out to you on the list, as it should. This is actually a great differentiator and what sets this marine battery apart from its counterparts. This was the first, and one of just a couple, 16V lithium multi-cell marine battery options on the market. While some of you are worried about it blowing up your graphs, it’s actually the opposite. Many guys have been powering their Livescope box with jimmy-rigged cordless drill batteries that are 16 volts. Today’s modern electronics are power hogs and actually want more than 12-volts.

Whenever making a significant buy, you should consider a warranty. Most batteries come with a 30-day money-back guarantee and a prorated time frame. They’re submerged in an electrolyte solution of sulfuric acid, which produces electrical energy. The design allows for maintenance-free use, so there is no need to worry about distilled water. [newline]If you’re not in the market for a dual-purpose battery, steer clear of the Optima.