Abyss Battery On-Board 36V 20A High-Precision Marine Lithium Battery Charger - AB-CRG-36V20A

Q: What is the Abyss Battery 36V 20A On-Board Marine Lithium Charger used for?
A: It is a high-output onboard charger designed to efficiently charge 36V LiFePO4 marine battery systems used in trolling motors and electric boats.

Q: Is the AB-CRG-36V20A compatible with all 36V batteries?
A: It is optimized for 36V lithium (LiFePO4) battery banks and is commonly used with marine trolling motor systems from brands like Minn Kota, MotorGuide, and Garmin.

Q: Can this charger be permanently installed on a boat?
A: Yes, it is designed as an on-board charger for permanent installation with marine-grade durability and waterproof construction.

Q: How fast does it charge a 36V lithium battery system?
A: With a 20A output, it provides fast, efficient charging depending on total battery capacity, significantly reducing downtime between uses.

Q: Does it automatically stop charging when full?
A: Yes, it features smart charging technology with automatic shutoff and BMS communication support for safe, complete charging.

Q: Is it safe for marine environments?
A: Yes, it is built with high-precision thermal management, corrosion resistance, and multiple protection systems for harsh marine conditions.

Q: What safety features are included?
A: It includes over-voltage, over-current, short-circuit, reverse polarity, and temperature protection for reliable onboard use.

• Use only with 36V LiFePO4 lithium batteries (43.3–44.2V charge profile)
• Connect to 120–240V AC stable power supply to avoid voltage instability
• Install in a dry, well-ventilated marine compartment (heat management is critical during 20A output)
• Do not block vents; allow full airflow for cooling and fan operation
• Regularly inspect DC leads, fuse, and connectors for corrosion or looseness
• Avoid using undersized extension cords (prevents overheating & voltage drop)
• Keep charger away from direct water spray despite IP-rated sealing
• Ensure correct polarity before every connection (reverse protection built-in but not foolproof)
• Let charger cool down after long charging cycles before storage
• Use proper mounting to reduce vibration damage in marine environments
• Do not use with lead-acid or mismatched voltage batteries
• Periodically check LED indicators for charging status and fault alerts
• Disconnect after full charge to avoid unnecessary standby load
• Avoid extreme heat above 40–50°C operating range for long life