For the longest time, lead-acid batteries have been the staple when it comes to deep cycle marine batteries, and not just for the main compartment, but as accessories to power trolling motors. 

The truth is many boaters still use them, especially for this application. But the reasons that should be so are diminishing, and modern lithium batteries for trolling motors offer an increasing number of significant advantages when compared to alternatives. 

Here are just a few of the best reasons it might be time to invest in a lithium battery for your trolling motor, despite the high upfront price. 

They’re easier to deal with all around 

Lithium batteries have a higher energy density than pretty much all other alternatives, which is a big deal for anyone that carries one to and from a boat whenever you head out on the water. 

In other words, higher energy density means that the batteries are lighter and more compact, which makes it easier to transport them and to handle them in general. 

Consistent power output even as the voltage drops 

One of the most annoying things about lead-acid batteries is that, as the charge level drops, they deliver less power. 

When you’re using a battery to power a trolling motor, that can be a big deal, especially on trafficked water or anywhere there are strong tides or currents. A drop in output can be an issue. 

One of the greatest things about lithium batteries for trolling motors is that they deliver consistent power even as the charge drops. A battery with even a low charge will perform nearly the same as a fully charged battery. 

No more terminal corrosion

One of the most unfortunate aspects of running a lead-acid battery is that the terminals can corrode with exposure to the elements, which can result in poor connections that drain the battery and create a lot of heat that can stress the motor, or worse. 

As a general rule, lithium trolling motor batteries do not experience this issue, which streamlines maintenance and makes it easier to establish secure connections. 

Easier care

Lead-acid batteries must be carefully stored, kept charged, and are suspect to poor performance in extreme temperatures. They may also periodically need to be watered. 

Lithium batteries have much less stringent care requirements and are less finicky than alternatives. Just keep them somewhere cool and dry where possible, protect against extremely low and high temperatures, and don’t let the battery remain dead for long, and that’s more or less all there is to it. 

They’re perfectly safe

While there have been some potentially valid concerns associated with lithium marine batteries in the past, modern lithium batteries, specifically lithium iron phosphate or LFP batteries, are completely safe when used with an appropriate charger and battery management system (BMS).

In addition, lithium iron phosphate batteries have a more stable battery chemistry, which makes them safer, regardless, on top of all of the other benefits that they offer. 

Explore Options in Lithium Batteries for Trolling Motors and Other Marine Applications 

Want to see what sorts of lithium batteries are available for marine applications, regardless of what type of boat you are trying to power? 

Visit BigBattery first. They carry an exhaustive assortment of lithium batteries and accessories for a wide range of applications, including marine applications as well as batteries for golf carts, RVs, solar battery backup, and much more. 

Visit their website or get in touch with them today to learn more about your options.

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