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If you’re thinking about getting a deep cycle marine battery, check out our article on what is the least expensive lithium deep cycle marine battery? Marine battery vs car battery for trolling motor Since trolling motors (and other boat electronics) are usually used over extended periods of time, ranging from several hours to an entire day on the water, it’s best to power them with a deep cycle marine battery.Įspecially if you use a 24 or 36 volt battery system, you can expect a runtime that will last the whole day, which is exactly what you need for this purpose. Why should you use a deep cycle marine battery?

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It also tolerates a deep discharge much better than a car battery.Īfter it has been discharged, a deep cycle marine battery needs to be gradually recharged with a suitable charging device, and the great thing is that you can repeat this cycle of deep discharge and recharge many times without ruining the battery.Īlternatively, you can also use a portable charging device to recharge the battery while in use.

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In other words, you end up with a short run time for your trolling motor, plus a ruined car battery.Ī deep cycle marine battery, on the other hand, is designed to release its charge slowly over time, which is ideal for powering a trolling motor for many hours. When that happens, a car battery tends to get drained faster and faster every time you use it. This is why car batteries don’t handle deep discharges very well, and if they’re used for deep discharges too often, this significantly shortens their lifespan. What is the difference between a car battery and a marine battery?Īn automobile battery is designed to provide an intense burst of high amperage electricity in order to get a car engine started.Īnd after it has done its job and the engine has started, it is then instantly recharged by the alternator.Īs a result of this, a car battery never experiences a deep discharge, but only shallow discharges that last for a short time. This type of battery slowly releases its charge over many hours, allowing the trolling motor to run for a long period of time without problems. Yes you can use a car battery for a trolling motor, but this isn’t the best solution, since a car battery isn’t designed for this task, and should only be used if there’s no marine battery available.įor a trolling motor, it’s best to use a deep-cycle marine battery with a long discharge time.

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Want to get the full scoop using an automobile battery to run an electric trolling motor? Read on below! Can you use a regular car battery for a trolling motor? If you want to use a trolling motor, but don’t have a suitable marine battery for the job, it’s tempting to use a regular car battery for this purpose.Īnd while this is definitely an option, it really isn’t the best solution, since it results in poor trolling motor performance (i.e. Using A Car Battery For A Trolling Motor (Here’s What You Need To Know)