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What is the Right Battery Size for a Trolling Motor?

  • By: Chris Patton
  • Date: April 17, 2021
  • Time to read: 3 min.

Different models of trolling motors can work with various batteries. For these energy sources to work perfectly, they must be in the best condition. Besides, they should come in the right size.

How can you determine the right battery size for your motor? Well, the batteries are sold in various dimensions. If you look around carefully, you should find the best choice for your trolling motor.

Even if you don’t know the best fit for your device, this article will show you the ideal size of battery for your trolling motor.

what is the right battery size for trolling motor

What is the Right Battery Size for a Trolling Motor?

If you want to power your trolling motor, choose a 100Ah battery of BCI group size 27. You should also ensure that the battery offers up to 175 minutes of reserve capacity.

A trolling motor helps boats to stay still in moving water. If you want to power up this device, it will help if you installed the ideal type of battery.

Again, if you want a battery for your trolling motor, choose a model that promises up to 100Ah, have a group 27 rating, and 175 minutes of reserve capacity.

When it comes to amperage hours, we recommend a 100ah battery because it offers a reasonable amount of runtime. Also, the Group 27 rating means that the battery can meet the needs of a powerful trolling motor. Moreover, a 175-minute reserve capacity is perfect for traveling in open water.

How Can I Find the Best Types of Batteries for Trolling Motor

Even if you know the best size of the battery, you should look for a model with the best features. Here are some of the factors that you should consider especially if you are looking for a new battery for your trolling motor.

There are two types of batteries for trolling motors. These models include AGM batteries and lead-acid wet cells.

If you want to pick an AGM battery, you will enjoy many years of service. Furthermore, you will not spend excess cash on frequent repairs. However, this model is not ideal for budget-conscious consumers.

On the other hand, lead-acid batteries offer a decent lifespan and do not cost a fortune. Sadly, they can are not as durable as AGM batteries.

How Long Will My Trolling Motor Battery Last?

On a single charge, you can get anything from 6 – 8 hours. However, this duration depends on the health, capacity, and overall condition of the battery. Also, the method of charging the battery can determine the run time of the battery.

If you want to get the real runtime of your battery, you can use the following formula.

Divide the ampere-hours by the average draw power of the trolling motor.

For example, let’s say we have a 100Ah battery while the average draw power is rated at 9 amps, then the runtime is 100ah/9amps = 11 hours

How Can I Care for My Trolling Motor Battery?

Like every type of battery, you must take care of your trolling motor’s energy source. Normally, this task does not require special skills or tools.

After charging a battery, do not use it immediately. Instead, allow it to cool before using it in your engine.

Check the water level on lead-acid batteries at least once a month. To keep the battery in top shape, refill dry cells with distilled water.

As you travel over water, avoid areas with too much current and wind. With this tip, you can keep the battery from drainage.

Don’t overload your motor battery as it weakens it.

If required, gently raise the trolling battery. If it feels too heavy, ask for help from a friend.

Wrapping Up

If you want the best services from your battery, choose a model that comes in a suitable size. With this in mind, pick a 100ah battery with a Grade 27 rating and reserve capacity.

If you want to run your device for hours, you should consider getting an AGM battery. However, this tool can be expensive.

Budget shoppers can use lead-acid batteries. When it comes down to it, these tools are affordable and last for more than several months.

Simple ways to extend your trolling motor battery include avoiding rough water, using distilled water, and performing periodic checks on the device. Also, look out for the water levels on all models.