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Most popular battery solution for trolling motors
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. Among traditional and new types of batteries, lithium batteries are starting to become more and more popular for a variety of reasons:
Longer run time & Light weight & Smaller
Significantly longer run time - Almost 2x the run time compared to traditional lead acid and AGM batteries. Extremely Lightweight - For the smaller boats where weight can be a considerable factor, lithium batteries offer a 70% average reduction in weight compared to traditional batteries. Smaller Footprint: Not only are lithium batteries lighter, they also take up less space.
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. Even though there is a higher up-front cost for lithium batteries, they can save you money in the long run. 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.
100% Depth of Discharge, More Power
This essentially means that you'll have full power regardless of the level of charge. Traditional batteries tend to lose power and capacity as their charge is depleted. Due to the consistent, sudden fluctuation in speeds, trolling motors require a fair amount of cranking torque (aka thrust). Lithium batteries supply more power due to their negligible voltage drop when rapid acceleration is required.
