Start a conversation about what deep cycle batteries are best for boats on social media and you’ll get 100’s of different answers about absorbed glass mat (AGM), gel, flooded lead acid, and lithium. (Don't to know what a deep cycle battery is? Check out this article.) All have their place. All can fail. And they don’t have to be old to take a sudden nosedive. It takes nothing more than improper charging, and their lifespan can be shortened tenfold.
“Basically, you have a battery go bad, and you’re not going fishing; it’s as simple as that,” says Jason Przekurat. The Stevens Point, Wisconsin, angler has been promoting the sport of fishing full time since 2007, starting as a guide and tournament angler in 1995 and now focusing on the latter throughout the Midwest, as well giving seminars and appearing in videos.
“The technology of today’s battery chargers is amazing, even compared to what it was only five years ago. The speed at which batteries can be charged without damaging them has increased, which allows me to know my boat is 100-percent ready go with just one overnight charging. That’s not the way it used to be, however; I don’t know how many times I had to head out for a full day on the water with batteries that weren’t totally topped off.”
Aboard Przekurat’s boat is four group-size 31 batteries; three for his Minn Kota bow-mounted trolling motor and one for starting his engine, running his Humminbird electronics, bilge pumps and more. Also onboard is a four-bank Minn Kota On-Board Precision Charger, which keeps his batteries in tip-top shape.
“The Minn Kota Precision is so much more than a battery charger; it’s a full-service battery-maintenance device,” Przekurat adds.
Right off the get-go, it’s internal intelligence senses how much current is going into the system itself, compensating for any low-voltage impute when outlets aren’t putting out the 120 volts they’re supposed because they’re overloaded, or, the unit is hooked up to long extension cords.
Next, each bank of the Precision has a mind of its own, sensing the ambient temperature and creating just the right amount of charge for each battery. And with just a push of a button, you’re able to select the type of battery each bank is wired to, as well, giving each one the proper current for its kind and the conditions.
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