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ABYSS® | 4 Bank 12V On-Board Marine Battery Charger | Model AB-CRG-12V-4B | 40A Total Output | For LiFePO₄, AGM & Lead Acid Batteries

ABYSS® | 4 Bank 12V On-Board Marine Battery Charger | Model AB-CRG-12V-4B | 40A Total Output | For LiFePO₄, AGM & Lead Acid Batteries

Regular price $424.99
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  • Supports charging of 12V LiFePO4, Lead Acid, or AGM batteries with selectable modes.
  • Provides up to 10A per bank for a total of 40A, with pulse wake-up mode for low-voltage lithium batteries.
  • Equipped with Power, Battery Type, and Charging Status LED indicators for real-time monitoring.
  • Features robust safety mechanisms including overcurrent, short-circuit, and reverse polarity protection.
  • Engineered with marine-grade materials to withstand water, vibration, and harsh environments.
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Product Description

ABYSS® | 4 Bank 12V On-Board Marine Battery Charger | Model AB-CRG-12V-4B | 40A Total Output | For LiFePO₄, AGM & Lead Acid Batteries

DESCRIPTION

Power up your marine adventures with the ABYSS® 4 Bank 12V On-Board Marine Battery Charger, an intelligent multi-bank charging solution designed for boaters who demand precision, safety, and durability.

Whether you’re running trolling motors, electronics, or livewell pumps, this rugged 4-bank 12V charger delivers a total of 40 amps (10A per bank) with adaptive charging modes for LiFePO₄ lithium, AGM, and lead-acid batteries. With intuitive LED indicators, pulse wake-up for low-voltage lithium batteries, and ABYC-compliant ignition protection, this is the onboard charging system trusted by pros and weekend warriors alike.

Encased in a fully sealed IP67 waterproof housing, the AB-CRG-12V-4B resists salt, splash, dust, and vibration making it ideal for tough marine conditions. With four independent charging banks and full safety circuitry, it's more than just a charger it's your boat’s power manager.

If you're upgrading your marine battery setup, this 12V 4-bank charger ensures every battery is fully charged, properly maintained, and ready to perform.

Key Features

  • Four Independent 12V Charging Banks Power up to 4 batteries simultaneously with 10A per bank (40A total output).
  • Battery Mode Selection Easily select 12V LiFePO₄, AGM, or lead-acid modes on each bank for custom charging.
  • Marine-Grade IP67 Waterproof Fully sealed with epoxy resin to withstand harsh saltwater and wet environments.
  • Pulse Wake-Up for Lithium Batteries Revives deeply discharged 12V LiFePO₄ batteries with one-button activation.
  • LED Charging Indicators See battery status, type, and charge progress at a glance.
  • ABYC Compliant & Ignition Protected Meets strict marine electrical safety standards for onboard installation.
  • Smart Safety System Includes overcharge, reverse polarity, short-circuit, spark, and overtemp protection.
  • Active Cooling System Built-in aluminum base plate and waterproof fan enhance heat dissipation.
  • Auto Charge Monitoring Advanced microprocessor manages each bank independently for balanced performance.
  • Rugged Design for Marine Use UV-, oil-, gas-, and vibration-resistant build for real-world boating conditions.

Detailed Specifications

Specification Details
Brand ABYSS®
Model AB-CRG-12V-4B
Charging Type On-Board 4 Bank Smart Marine Charger
Battery Compatibility 12V LiFePO₄, AGM, Lead-Acid
Total Output 40 Amps (10A per bank × 4 banks)
Battery Type Selection Each bank selectable: LiFePO₄, Wet, AGM
Activation Mode Pulse Wake-Up for low-voltage lithium
Input Voltage Range 120V – 240V AC
Input Frequency 50Hz – 60Hz
Full Charge Voltage 14.1–14.7V depending on battery type
LED Indicators Power, Battery Type, Charging Status
Cooling Method Aluminum base plate with sealed cooling fan
Operating Temp Range -10°C to 40°C (14°F to 104°F)
Nominal Temp 25°C (77°F)
Relative Humidity 5% – 95% (non-condensing)
Ingress Protection IP67 Waterproof (Epoxy-Sealed)
Safety Features Overcharge, Overheat, Reverse Polarity, Short Circuit, Spark-Proof
Dimensions (L × W × H) 11.9" × 9.6" × 3.8" (304mm × 245mm × 99mm)
Weight 17 lbs (7.7 kg)
AC Cable Length 6 ft (183 cm)
DC Cable Length 6 ft (183 cm) per bank
Application Boats, Marine Vessels, 12V Trolling Systems
Certifications ABYC Compliant, Ignition Protected

 

Multi-Bank 12V/24V/36V Marine & RV Chargers

3-Bank 12V/24V & 3-Bank 12V/36V Marine Chargers

Specification 3-Bank 12V/24V Marine Charger 3-Bank 12V/36V Marine Charger
Model AB-CRG-12V24V-3B AB-CRG-12V36V-3B
Voltage 12V/24V 12V/36V
Output 2x12V/10A + 24V/10A 2x12V/10A + 36V/10A
Product Size 11.9" x 9.6" x 3.8" 14.2" x 9.6" x 3.8"
Weight 16.5 lbs (7.5 kg) 19 lbs (8.6 kg)
Lead Length 6' (72 in.) 6' (72 in.)
Charging Battery Type 2 banks: 12V LiFePO4, AGM, Wet
3rd bank: 24V LiFePO4
2 banks: 12V LiFePO4, AGM, Wet
3rd bank: 36V LiFePO4

 

4-Bank 12V & 4-Bank 12V/36V Marine Chargers

Specification 4-Bank 12V Marine Charger 4-Bank 12V/36V Marine Charger
Model AB-CRG-12V-4B AB-CRG-12V/36V-4B
Voltage 12V 12V/36V
Output 4x12V/10A 3x12V/10A + 36V/10A
Product Size 11.9" x 9.6" x 3.8" 16.6" x 9.6" x 3.8"
Weight 17 lbs (7.7 kg) 26.8 lbs (12.1 kg)
Lead Length 6' (72 in.) 6' (72 in.)
Charging Battery Type Each bank: 12V LiFePO4, AGM, Wet 3 banks: 12V LiFePO4, AGM, Wet
4th bank: 36V LiFePO4

 

36V Alternator & 12V 50A DC Converter

Specification 36V Alternator Charger 30V–90V to 12V 50A Converter
Model AB-36V-DC AB-DC-SD
Voltage 36V 30V–90V
Output 43.8V/10A 12V/50A DC
Product Size 6" x 5" x 2" 6" x 5" x 2"
Weight 3.1 lbs (1.4 kg) 3.1 lbs (1.4 kg)
Lead Length 7 in. N/A
Charging Battery Type 36V LiFePO4 12V LiFePO4

 

36V 10A & 36V 20A High-Precision Chargers

Specification 36V 10A High-Precision Charger 36V 20A High-Precision Charger
Model AB-CRG-36V10A AB-CRG-36V20A
Voltage 36V 36V
Output 36V/10A DC 36V/20A
Product Size 7.5" x 5" x 2.75" 10.5" x 6" x 3"
Weight 3.5 lbs (1.6 kg) 7.1 lbs (3.2 kg)
Lead Length 4' (48 in.) 4' (48 in.)
Charging Battery Type 36V LiFePO4 36V LiFePO4

 

24V 10A & 24V 20A High-Precision Chargers

Specification 24V 10A High-Precision Charger 24V 20A High-Precision Charger
Model AB-CRG-24V10A AB-CRG-24V20A
Voltage 24V 24V
Output 24V/10A 24V/20A
Product Size 7.5" x 5" x 2.5" 7.75" x 5" x 3"
Weight 3.3 lbs (1.5 kg) 3.3 lbs (1.5 kg)
Lead Length 3' (36 in.) 3' (36 in.)
Charging Battery Type 24V LiFePO4 24V LiFePO4

 

24V Alternator Charger

Specification 24V Alternator Charger
Model AB-24V-DC
Voltage 24V
Output 24V
Product Size 4.75" x 3.25" x 1.25"
Weight 0.95 lbs (0.43 kg)
Lead Length 7 in. (17.8 cm)
Charging Battery Type 24V LiFePO4

 

Manuals & Documents

ABYSS BATTERY® USER MANUAL

LITHIUM CHARGER USER MANUAL

DC-DC CHARGER USER MANUAL

REEL BATTERY USER MANUAL

BLUETOOTH® APP QUICK GUIDE

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