SEAL™ FN Series Lithium Battery: User Manual Overview

The SEAL™ Series FN4 and FM3 lithium batteries are purpose-built for marine environments — especially for fishing and bass boats that demand high performance, extreme reliability, and compact, rugged construction. This user manual provides everything you need to know for safe installation, optimal operation, and long-term maintenance of your battery.

? Product Highlights

• Lithium Iron Phosphate (LiFePO₄) chemistry for maximum safety

• 4000-cycle lifespan at 80% depth of discharge

• Built-in fire suppression system (aerosol-based)

• Integrated low-temp heater and Bluetooth-ready X3 display panel (optional)

• IP67 waterproof, compact, and lightweight

• Available in 24V (FM3) and 36V (FN4) configurations

? Intelligent BMS Protection

Each battery is equipped with an advanced Battery Management System (BMS) that protects against:

• Overcharge / Over-discharge

• Overcurrent / Short Circuit

• High/Low temperature

• Cell imbalance

• Predischarge timeout

The BMS also supports:

• SOC (State of Charge) tracking

• Passive cell balancing

• Auto wake-up charging mode

• Charge-only mode for safety storage

? Installation & Wiring

Detailed step-by-step instructions are provided for:

• Mounting and securing the battery with base tray and straps

• Wiring power and communication cables (including optional circuit breaker)

• Using the X3 monitor to turn the battery ON/OFF, view data, and connect to the ABYSS app

Note: Parallel or series connections are strictly prohibited for this battery.

❄️ Cold Weather Functionality

• Built-in heating kicks in automatically when temperatures drop below 2°C (35.6°F)

• Heating cycle may take up to 110 minutes before the battery enters a safe charging state

? Maintenance & Storage Tips

• Perform full charge/discharge cycles every 3 months to keep SOC readings accurate

• If stored over 3 months, reduce SOC to 20–30% and recharge quarterly

• Keep battery in a cool, dry, ventilated space and never store in a fully charged state

? Specifications Snapshot

Certifications: CE, FCC, UN38.3
Waterproof Rating: IP67
Cycle Life: 4000+ cycles @ 80% DoD

This comprehensive manual is your key to unlocking the full performance and safety potential of your SEAL™ battery system. For advanced system integration or troubleshooting, refer to the FAQ and spec sections inside the PDF.