Boat & Trolling Motor

Batteries, run time and wiring for trolling motors and boat electronics. Pick a tool, enter your setup and get a plain answer with a shopping list.

3 tools live 2 guides

Tools

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Whole-Boat Power Budget Calculator

Add up your trolling motor, fish finder, livewell, lights and more. Works with one shared battery or separate motor and electronics batteries.

  • Hours each battery lasts
  • Whether it covers your day
  • What uses the most power
  • Battery size for your day
Open the power budget
Example: 55 lb motor, 7-inch fish finder, livewell, nav lights, Power-Pole, 8-hour day
13.6 hours on the electronics battery
10.9 hmotor battery
22 Ahelectronics a day
59%of power to the motor
Live

Trolling Motor Power Calculator

Enter your motor, how you fish and your battery. Works with 12-, 24- and 36-volt motors and with flooded, AGM and lithium batteries.

  • Hours on the water
  • Battery size for your day
  • Wire gauge and breaker
  • Shopping list and wiring picture
Open the calculator
Example: 55 lb motor, casting a shoreline, 100 Ah AGM
10.9 hours on the water
77 Ahfor 8 hours
4 AWGwire
60 Abreaker
Live

Fish Finder Battery Life Calculator

Pick your fish finder and battery to see how long it runs. Built for kayaks, jon boats and the ice, with forward-facing sonar included.

  • Hours of run time
  • Battery size for your day
  • Common battery sizes compared
  • Wire size and what to buy
Open the calculator
Example: Humminbird Helix 7, 12 Ah lithium battery, 6-hour day
12.0 hours of run time
2 tripsper charge
6 Ahcovers the day
18 AWGwire

Guides

How Many Batteries Does a Trolling Motor Need? The count for every motor size, how big each battery should be and how long it lasts on AGM and lithium. Read the guide How to Manage Your Boat’s Power All Day Check, plan, stretch and recharge your batteries so the engine starts and the trolling motor runs until the last cast. Read the guide

More categories

Camping Power 12-Volt Wiring Off-Grid Cabin Hunting & Ice Fishing Batteries & Charging