⚡ ABYC E-11 Dedicated Estimator

50Ah Lithium Battery Trolling Motor Runtime Calculator

Compact 50Ah LiFePO4 batteries are popular for kayak anglers and small jon boats seeking to save weight. Calculate exact runtimes before your battery runs dry.

⚡ Instant Estimator

Trolling Motor Battery Runtime Calculator

ABYC E-11 Compliant

1. System Voltage

2. Motor Thrust & Max Amp Draw~50A Max Draw

Custom Max Amps:(Overrides thrust preset)

3. Battery Chemistry & Usable Depth of Discharge (DoD)

Lithium (LiFePO4)100% Usable Capacity

AGM / Lead-Acid50% Safe Usable DoD

4. Battery Capacity (Amp Hours / Ah)100 Ah

20 Ah50 Ah100 Ah (Standard)200 Ah300 Ah

5. Motor Throttle / Speed Level50% 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

How long does a 50Ah battery last on a 55lb trolling motor?

At full throttle (100% WOT drawing ~50A), a 50Ah lithium battery lasts approximately 1 hour. At half-speed (cruising), it lasts 3 to 3.5 hours.