Abyss Battery 4 Bank 12V On-Board Marine Battery Charger - AB-CRG-12V-4B

Abyss Battery 4 Bank 12V On-Board Marine Battery Charger - AB-CRG-12V-4B

Introducing the ABYSS 4 Bank 12V On-Board Marine Battery Charger - a marine companion that breathes new life into your battery. This cutting-edge charger has been meticulously designed to infuse power into your 12V LiFePO4, Lead acid, or AGM batteries with the simple selection of a mode. 

Staying informed is no longer a hassle. With our Power, Battery Type, and Charging Status LED Indicators, you'll always know your battery's condition. This charger provides up to 10A of charge for each bank, delivering a total of 40A, and also features a pulse wake up mode for low voltage lithium batteries.

What our Experts Think

• Multi-battery charging efficiency: The ABYSS® AB-CRG-12V-4B is designed to charge up to four 12V marine batteries independently, making it ideal for complex onboard power systems.
• Optimized for lithium and marine use: Engineered with a LiFePO₄-compatible charging profile, ensuring safe, balanced charging that helps extend battery life.
• True onboard convenience: Permanent installation allows simultaneous charging of multiple battery banks directly on the boat—no need to remove batteries for shore charging.
• Smart multi-stage charging: Uses controlled bulk, absorption, and float stages to maintain battery health and improve long-term performance.
• Balanced output distribution: Each bank is managed separately to ensure even, consistent charging across all connected batteries.
• Marine-grade construction: Built to withstand moisture, vibration, and saltwater environments, ensuring reliable offshore performance.
• Advanced safety protection: Includes safeguards against overcharging, overheating, short circuits, and reverse polarity.
• Energy-efficient design: Minimizes power loss during conversion, improving charging speed and reducing wasted energy.
• System scalability: Ideal for boats with multiple battery systems such as starting, trolling, house, and accessory banks.
• Professional-grade power management: Designed for serious boaters who need a reliable, centralized charging solution for complex marine electrical setups.

Q&A

Maintenance Tips

• Match battery chemistry: Always set each bank to correct mode (LiFePO₄ / AGM / Wet). Wrong mode reduces lifespan or triggers BMS faults.
• Use proper AC input: 100–240V stable power with good grounding to avoid charging interruptions or fault cycling.
• Avoid heat buildup: Mount in a ventilated area; aluminum heat-dissipation + cooling fan works best with airflow.
• Keep it dry despite IP68: Fully sealed epoxy housing is waterproof, but connectors must remain corrosion-free and dry.
• Do not mix weak batteries: All 4 banks should ideally charge batteries of similar health/state-of-charge for balanced performance.
• Check LED status regularly: Monitor power, battery type, and charge status indicators to detect faults early.
• Use wake-up function carefully: For deeply discharged lithium batteries, use built-in activation mode instead of bypassing BMS.
• Inspect cables monthly: Look for heat marks, loose crimps, or salt corrosion—especially in marine environments.
• Avoid continuous overload: Stay within rated 10A per bank to prevent thermal stress and reduced efficiency.
• Seasonal storage: Disconnect AC input when not in use for long periods to prevent standby wear and moisture-related faults.