And the lead acid trolling 24V lifepo4 battery motor battery costs much less but it weighs more with less energy density. Some large-capacity trolling motor batteries are so large that they are too big for use on kayaks. This lithium-ion battery from Battle Born weighs just 31lbs, making it much more suitable for kayak use, and yet, it still has 100 amp-hours capacity. Also, never mix two different types of trolling motor batteries.

Size

This model is on the smaller size of batteries we’ve discussed today. The Weize weighs 23.1 pounds with dimensions of 7.68 x 5.12 x 6.10 inches, making it small and portable. This battery also has 35 Amp Hours (run time), the lowest energy output on our list. But it will still get the job done for a small kayak trolling motor.

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Buying from the most competent brands ensures you spend less time recharging and more time fishing. [newline]If that’s what you’re looking for, always choose the right type of battery. Lithium deep-cycle marine batteries are designed for high-performance, ensuring reliable power for applications including boats, trolling motors and fish finders. These batteries integrate Battery Management Systems (BMS) to prevent overcharging and extending their lifespan. Offering prolonged battery life, they require less frequent charging, providing more uninterrupted time on the water. Optimizing your trolling motor setup requires lithium batteries that balance capacity, weight, and marine-grade durability.

What Size Lithium Battery Do I Need For A 55lb Trolling Motor?

What many folks don’t know is that 36V controllers are made to work in 36V environments and give you way more leeway in one battery degrading your whole system. First, you have to understand in parallel or series systems, when one battery goes down, the whole thing is down. If, on the other hand, you want a light and high-performing battery that will last you many years, lithium is the way to go. I recommend you also read reviews and learn about other users’ experiences with customer support. It’s great if you know you can pick up your phone and get any advice you may need. In this case, your motor shouldn’t draw more than 60 Amps, preferably closer to 50 Amps.

If you need two, always ensure they are the same type, i.e. two AGM batteries, two wet cell batteries, or two lithium-ion batteries. The size and weight of a trolling motor battery may impact the overall performance of the battery so make sure that it isn’t too heavy for your boat. When the weight capacity is reached in your boat the battery will drain much quicker, so look for lighter-weight batteries if you’re reaching maximum capacity. This alone makes it one of the top trolling motor batteries for smaller boats and kayaks, where one needs to closely manage the weight capacity. Its relatively compact dimensions (12″ x 6.7″ x 8.2″) are also perfect for applications where space is at a premium.

36-volt lithium-capable chargers are also harder to find and more expensive. 100Ah 12-volt lithium batteries are similar in size to the Group 27 traditional leisure battery. Lithium batteries can be charged with as much current as 100% of their Ah capacity, which means 3-5 times faster than lead-acid batteries.

Trolling motors use deep cycle batteries, and the car battery (usually the cranking type of battery) isn’t ideal for a trolling motor. For example, if you have a 100 amp hour trolling motor battery, and the motor pulls 40 amps at top speed. The trolling motor battery life should be around 2.5 hours (100 Ah / 40 amps) at top speed.