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Minn Kota

minnkota.johnsonoutdoors.com

About this brand

Type
Manufacturer
Parent company
Johnson Outdoors

Last updated: 11 September 2026

Battery and charging

Minimum battery rating
At least 110 Ah, usually Group 27 or larger

Disputed

“For best results, use a deep cycle, marine battery with at least a 110-ampere hour rating, usually a Group 27 or higher.”

Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

Other sources state

  • At least 105 Ah

    “For best results, use a deep cycle, marine battery with at least a 105 amp-hour rating.”

    Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

Reserve capacity, where no amp-hour is given
180 minutes reserve capacity, where no Ah is given

“If amp hour rating is not available, select a deep cycle battery with a minimum of 180 minutes of reserve capacity.”

Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

Whether batteries in one system must match
Every battery in a string should match in type, size and age

“Before wiring your trolling motor batteries in series it’s important to note that it is recommended that all batteries included in a series should be the same type (all lead-acid, all AGM or all Lithium), size (volts/amps), and age.”

Source: minnkota.johnsonoutdoors.com/us/blog/wiring-trolling-motor-batteries-in-series-parallel

Wiring a higher-voltage string
Wire a higher-voltage string only for a motor rated for it

“Important: Only create a 24 or 36 volt system (series) for trolling motors that are rated for that voltage”

Source: minnkota.johnsonoutdoors.com/us/blog/wiring-trolling-motor-batteries-in-series-parallel

Cable between the batteries
Jumpers between batteries go one gauge heavier than the leads

“It’s best to use a wire gauge at least one size larger than your trolling motor power leads. For example, if your trolling motor leads are 10AWG, it would be best to use 8AWG or 9AWG wire for your jumper wires.”

Source: minnkota.johnsonoutdoors.com/us/blog/wiring-trolling-motor-batteries-in-series-parallel

Lithium charging with the maker's chargers
2021-or-later motors and chargers have a lithium profile

“Minn Kota Trolling motors and Minn Kota Precision (PCL) chargers manufactured in 2021 or later offer a designated lithium charge profile and all previous Precision models have the ability to charge lithium batteries when set to the AGM battery type selection.”

Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

Chargers that take lithium
All their Digital and Precision on-board chargers take LiFePO4

“If this sounds like you, you will be happy to hear that all Minn Kota Digital and Precision On-Board Chargers are capable of charging 12-volt LiFePO4 batteries.”

Source: minnkota.johnsonoutdoors.com/us/blog/lithium-trolling-motor-batteries-advantages-and-compatibility

Waking a lithium pack from standby
2021-or-later Precision chargers can wake a sleeping pack

“Minn Kota Precision (PCL) chargers manufactured in 2021 or later offer a few added benefits as well as a designated lithium charge profile and the ability to wake these battery types from standby in certain conditions.”

Source: minnkota.johnsonoutdoors.com/us/blog/lithium-trolling-motor-batteries-advantages-and-compatibility

Recommended charger brand
They recommend their own chargers, and say why

“Minn Kota recommends using Minn Kota brand chargers to recharge the batteries connected to your Minn Kota trolling motor, as they have been engineered to work with motors that include a bonding wire.”

Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

Battery types supported by the charger

The maker’s own documents give different figures

The 2019 article's list — no lithium, and gel instead

How to Charge a Deep Cycle Battery - Minn Kota · retrieved 11 September 2026

“Minn Kota Precision Chargers add premium features, including: Battery type selection (flooded, AGM, or gel) for each bank”

Source: minnkota.johnsonoutdoors.com/us/blog/how-charge-deep-cycle-battery

AGM, lithium or flooded lead-acid, chosen per bank

Battery Charger Technologies - Minn Kota · retrieved 11 September 2026

“On each bank of a Minn Kota Precision Charger, you can select a unique battery type to guarantee a safe, protected charge. Supported battery types: -AGM -Lithium -Flooded Lead Acid”

Source: minnkota.johnsonoutdoors.com/us/learn/technology/battery-chargers

Voltage at which a charger restarts
It restarts on its own once a battery falls below 12.6 V

“After 12 hours, the charger automatically turns off and a steady 100% GREEN LED is lit for each bank to indicate the battery is in long term Maintenance Mode and ready to use. The charger will automatically resume charging when the battery voltage drops below 12.6V.”

Source: minnkota.johnsonoutdoors.com/us/blog/importance-marine-battery-maintenance

Battery care and safety

Which batteries may be equalized
Equalization is for flooded lead-acid and nothing else

“Precision chargers clean and protect your battery every time you plug in, extending run time and battery life. Plus, activate a more rigorous, complete cleaning at the push of a button. For Flooded Lead Acid batteries only”

Source: minnkota.johnsonoutdoors.com/us/learn/technology/battery-chargers

Leaving a full battery on charge
Charging a full battery can damage it for good

“If a charge is being added to a battery that's fully charged, irreversible damage can occur. And there are many chargers on the market that keep the power on until you unplug it.”

Source: minnkota.johnsonoutdoors.com/us/blog/importance-marine-battery-maintenance

Alternator and DC chargers
An alternator charger can damage the motor and void cover

“Most alternator charging systems do not account for this bonding wire, and connect the negative posts of the trolling motor batteries to the negative posts of the crank/starting battery. These external connections can damage connected electronics and the electrical system of your trolling motor, voiding your warranty.”

Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

The bonding wire's fuse
3 A fuse inside; an intact one does not mean it is wired right

“The internal bonding wire is equipped with a 3 amp fuse. Improper connections described above carrying in excess of 3 amps will blow this fuse and no further damage will be exhibited.”

Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

Where an accessory may be connected
An accessory earths to the battery the motor's black lead uses

“The negative (-) connection must be connected to the negative terminal of the same battery that the trolling motor negative lead connects to. In the diagrams below this battery is labeled “Low Side” Battery. Connecting to any other trolling motor battery will input positive voltage into the “ground” of that accessory, which can cause excess corrosion.”

Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

Sharing the bank with anything else
They ask for a battery bank used by nothing but the motor

“Minn Kota recommends using an exclusive battery system for your trolling motor. Where possible, accessories should be connected to a separate battery system. Radios and sonar units should not be connected to any trolling motor battery systems as interference from the trolling motor is unavoidable.”

Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

Mixing chemistries in one string
Never mix lead-acid and lithium in one series string

“Do not mix battery types in 24 or 36-volt systems (i.e. Do not connect a Lead-Acid and Lithium in a series to create a 24-volt system)”

Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

Using a cranking battery
A cranking battery must not run a trolling motor

“A cranking battery is not suitable for use with an electric trolling motor because they focus on quick, strong burst of power to start your outboard engine vs long-lasting power for trolling motor use.”

Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

Starting the engine off the motor's bank
Do not also crank the engine off one battery in the string

“when powering a 24 or 36-volt trolling motor system, it is not recommended to use a single battery in the 24 or 36-volt series as a starting battery as it can draw current unevenly from the system and over time lead to battery damage”

Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

Trolling motors & devices

We hold 10; 4 have a published page.

Sources

  • Terrova Installation Guide (2327132rj)Archived document

    Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf

    Retrieved September 11, 2026

  • How to Wire Batteries in Series and Parallel [24 & 36 Volt Trolling Motors] - Minn KotaArchived document

    Source: minnkota.johnsonoutdoors.com/us/blog/wiring-trolling-motor-batteries-in-series-parallel

    Retrieved September 11, 2026

  • Lithium Trolling Motor Batteries: Advantages & Compatibility - Minn KotaArchived document

    Source: minnkota.johnsonoutdoors.com/us/blog/lithium-trolling-motor-batteries-advantages-and-compatibility

    Retrieved September 11, 2026

  • The Importance of Marine Battery Maintenance - Minn KotaArchived document

    Source: minnkota.johnsonoutdoors.com/us/blog/importance-marine-battery-maintenance

    Retrieved September 11, 2026

  • Battery Charger Technologies - Minn KotaArchived document

    Source: minnkota.johnsonoutdoors.com/us/learn/technology/battery-chargers

    Retrieved September 11, 2026

  • How to Charge a Deep Cycle Battery - Minn KotaArchived document

    Source: minnkota.johnsonoutdoors.com/us/blog/how-charge-deep-cycle-battery

    Retrieved September 11, 2026

  • Best Trolling Motor Battery (2026 Selection Guide) - Type & SizeArchived document

    Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery

    Retrieved September 11, 2026