⚡ Free ABYC-Compliant Marine Electrical & Trolling Motor Sizing Tools for US Boaters
⚡
MarineWireCalcMarine & DC Tools
⚡ ABYC E-11 Dedicated Estimator

Kayak Trolling Motor Battery Runtime Calculator

Kayak anglers require lightweight lithium batteries to preserve buoyancy and payload capacity. Calculate exact runtimes for 30 lb, 40 lb, and 55 lb kayak setups.

⚡ Instant Estimator

Trolling Motor Battery Runtime Calculator

ABYC E-11 Compliant
~50A Max Draw
Custom Max Amps:(Overrides thrust preset)
100 Ah
20 Ah50 Ah100 Ah (Standard)200 Ah300 Ah
50% Speed (Cruising)
10% (Trolling)25% (Slow)50% (Cruising)75% (Fast)100% (WOT Max)
Estimated Continuous Runtime
--
Current Draw:-- Amps
Usable Capacity:-- Ah
Continuous Power:-- Watts
Safe Reserve Left:--

Runtime Across All Speeds

Speed 1 (25% Throttle)-- hrs
Speed 2 (50% Cruising)-- hrs
Speed 3 (75% Fast)-- hrs
Speed 4 (100% WOT)-- hrs
🛠️ Recommended Electrical Setup
  • • Circuit Breaker: 60A Marine Rated
  • • Minimum Cable Size: 6 AWG (under 10ft)
  • • Wire Material: Tinned Marine Copper (ABYC BC-5W2)

Frequently Asked Questions

Is a 50Ah lithium battery enough for a fishing kayak trolling motor?

Yes! A 50Ah lithium battery weighs only 12-14 lbs and powers a 40lb-55lb kayak motor for 3.5 to 5 hours of normal trolling and spot-hopping.