For instance, you can buy a 24v lithium battery that is the same size as a 12v, group 27 deep cycle battery. Smaller Footprint: Not only are lithium batteries lighter, they also take up less space. Lithium batteries supply more power due to their negligible voltage drop when rapid acceleration is required.ĥ. More Power - Due to the consistent, sudden fluctuation in speeds, trolling motors require a fair amount of cranking torque (aka thrust). By the way, the new Minn Kota Precision chargers are compatible with lithium batteries.Ĥ. Traditional batteries tend to lose power and capacity as their charge is depleted.
TROLLING MOTOR BATTERY METER FULL
100% Depth of Discharge - This essentially means that you'll have full power regardless of the level of charge.
If you calculate the cost of replacing your batteries every 2-3 years as opposed to every 10 years with lithium, you'll most likely be spending less on batteries when all is said and done.ģ. Even though there is a higher up-front cost for lithium batteries, they can save you money in the long run. Significantly Longer Battery Life - Lithium batteries can last up to 10 years whereas lead acid wet-cell and AGM batteries have an average life span of 2-4 years. Extremely Lightweight - For the smaller boats and boats where weight can be a considerable factor, lithium batteries offer a 70% average reduction in weight compared to traditional batteries.Ģ. Lithium batteries are starting to become more and more popular for a variety of reasons:ġ. *The good news is that the prices of AGM's have been dropping pretty consistently over the last couple of years. While more expensive, they provide increased longevity and performance out on the water. AGM's also have the added benefit of being 100% maintenance free. AGM's *cost more than standard lead acid wet-cell batteries – up to 2x more – and may not be an option for those on a tight budget. While a traditional deep cycle battery might last approximately 2-3 years, an AGM deep cycle battery can last up to three or four years. AGM Batteries:ĪGM (Absorbed Glass Mat) Batteries are a type of lead acid battery that are completely sealed, generally last longer on a charge and typically have a longer life-span. The downside of lead acid batteries is that they can require occasional maintenance – topping off the water – and they are also prone to vibration and spillage. These batteries can be purchased for less than $100 and are readily available in a variety retail outlets. Depending on quality, lead acid batteries will last between 2-3 years.
They can handle frequent draining and re-charging associated with trolling motor use and they are the most affordable option.
Lead acid batteries remain the most common deep cycle batteries for trolling motors. The "traditional" batteries are still -by far- the most popular trolling motor batteries but Lithium batteries are catching on. The term "Deep-cycle" means that the batteries are designed for discharging smaller amounts of current over a longer period of time and for more frequent recharging. Battery Typesįor many years, there were two primary types of deep-cycle 12-volt batteries recommended for use with trolling motors: Lead Acid Wet-Cell and AGM Batteries. When it comes to selecting trolling motor batteries, there are a few things you will want to consider: Battery type, battery amperage hour rating, size and budget.
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