ABYSS® On-Board 12V 40A High-Precision Marine Battery Charger
AB-CRG-12V40A
- In stock, ready to ship
ABYC Compliant
2-year free replacement warranty
IP68 Water Rating
Ignition Protection
The Abyss Battery 12V 40-Amp On-Board Marine Charger is engineered for boaters who demand reliability in harsh marine environments. Designed with a true IP68 waterproof and corrosion-resistant enclosure, this charger is built to survive salt spray, vibration, humidity, and long days offshore—without compromising charging performance.
Delivering 40 amps of intelligent charging power, this unit is ideal for house battery systems, ensuring fast, efficient recovery between trips while protecting battery health over the long term. Advanced charging algorithms automatically adapt to your battery chemistry, making it fully compatible with Lithium (LiFePO₄), AGM, and traditional lead-acid batteries.
Smart internal safeguards continuously monitor voltage, temperature, and current, providing safe, consistent charging even in demanding conditions. Whether installed in a center console, bay boat, offshore rig, or work vessel, this charger delivers dependable power where it matters most.
Built for serious marine use. Designed for long battery life. Trusted when conditions are unforgiving.
Key Features
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12V / 40A High-Output Charging – Fast, efficient power delivery for marine house batteries
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IP68 Waterproof & Dustproof – Fully sealed to withstand saltwater spray, corrosion, and vibration
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Multi-Chemistry Compatibility – Supports Lithium (LiFePO₄), AGM, and Lead-Acid batteries
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Smart Charging Profiles – Automatically optimizes charge cycles for battery longevity
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Marine-Grade Construction – Rugged design for offshore and inshore installations
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Ideal for House Battery Systems – Reliable onboard charging between trips
ON-BOARD Battery Chargers
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Product name |
3-Bank 12v/24v marine charger |
3-BANK 12v/36v MARINE CHARGER |
4-BANK 12V MARINE CHARGER |
4-BANK 12V/36V MARINE CHARGER |
36V Alternator CHARGER | 30V-90V Input to 12v 50A DC Step down converter | 36V 10A HIGH- PRECISION CHARGER | 36V 20A HIGH- PRECISION CHARGER | 24V 10A HIGH- PRECISION CHARGER | 24V 20A HIGH- PRECISION CHARGER | 24V ALTERNATOR CHARGER |
|
Model |
AB-CRG-12V24V-3B |
AB-CRG-12V36V-3B |
AB-CRG-12V-4B |
AB-CRG-12V/36V-4B |
AB-36V-DC | AB-DC-SD | AB-CRG-36V10A | AB-CRG-36V20A | AB-CRG-24V10A | AB-CRG-24V20A | AB-24V-DC |
|
Voltage |
12V/24V |
12V/36V | 12V | 12V/36V | 36V | 30V-90V | 36V | 36V | 24V | 24V | 24V |
|
Output |
2x12V/10A +24V/10A |
2x12V/10A +36V/10A | 4x12V/10A |
3x12V/10A +36V/10A |
43.8V/10A | 12V/50A DC | 36V/10A DC | 36V/20A | 24V/10A | 24V/20A | 24V |
|
Product Size
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11.9" x 9.6" x 3.8" |
14.2" x 9.6" x 3.8" 361 x 245 x 99mm |
11.9" x 9.6" x 3.8" 304 x 245 x 99mm |
16.6" x 9.6" x 3.8" 423 x 245 x 99mm |
6" x 5" x 2" 150 x 130 x 48mm |
6" x 5" x 2" 150 x 130 x 48mm |
7.5" x 5" x 2.75" 190 x 127 x 70mm |
10.5" x 6" x 3" 267 x 152 x 76mm |
7.5" x 5" x 2.5" 190 x 127 x 63mm |
7.75" x 5" x 3" 197 x 127 x 76mm |
4.75" x 3.25" x 1.25" 121 x 82 x 32mm |
| Weight | 16.5 lbs (7.5 kg) |
19 lbs (8.6 kg) | 17 lbs (7.7 kg) | 26.8 lbs (12.1 kg) | 3.1 lbs (1.4 kg) | 3.1 lbs (1.4 kg) | 3.5 lbs (1.6 kg) | 7.1 lbs (3.2 kg) | 3.3 lbs (1.5 kg) | 3.3 lbs (1.5 kg) | .95 lbs (.43 kg) |
| Lead Length | 6' (72 in.) (183 cm) |
6' (72 in.) (183 cm) |
6' (72 in.)(183 cm) | 6' (72 in.) (183 cm) |
7 in. (17.8 cm) |
N/A | 4' (48 in.)(122 cm) |
4' (48 in.)(122 cm) | 3' (36 in.) (91.4 cm) |
3' (36 in.) (91.4 cm) | 7 in. (17.8 cm) |
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Charging Battery Type
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Two banks have MODE buttons to choose charging battery type: 12V LiFePO4, 12V Wet, 12V AGM; The 3rd bank could charge 24V LiFePO4 Lithium Batteries |
Two banks have MODE buttons to choose charging battery type: 12V LiFePO4, 12V Wet, 12V AGM; The 3rd bank could charge 36V LiFePO4 Lithium Batteries |
Each bank has one MODE button to choose charging battery type: 12V LiFePO4, 12V Wet, 12V AGM |
Three banks have MODE buttons to choose charging battery type: 12V LiFePO4, 12V Wet, 12V AGM; The 4th bank could charge 36V LiFePO4 Lithium Batteries | 36V LiFePO4 Batteries | 12V LiFePO4 Batteries | 36V LiFePO4 Batteries | 36V LiFePO4 Batteries | 24V LiFePO4 Batteries | 24V LiFePO4 Batteries | 24V LiFePO4 Batteries |
| FOR ALL CHARGERS (if applicable) |
|
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LED Indicators |
Power & Battery Type & Charging Status LED Indicators |
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Activate Function |
Wake Up Function for Low Voltage of Lithium Battery (Press the mode button on the bank panel for 3-5 seconds to start this function) |
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Full Cut-off Voltage |
14.1V-14.4V for 12V Lead Acid Battery & 14.4V-14.7V for 12V AGM / LiFePO4 Lithium Battery & 28.8V-29.4V for 24V Lithium Battery & 43.3V-44.2V for 36V Lithium Battery |
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Cooling Type |
Aluminium stretched plate and waterproof cooling fan at the bottom of product for better heat dissipation |
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Ingress Protection |
Filled with pure epoxy resin for high waterproof level IP67
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Circuit Protection |
Short-circuit Protection & Reverse Connection Protection & Overcharge Protection & Overtemp Protection
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Working Temperature Range |
-10°C~40°C |
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Nominal Working Temperature |
25°C |
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Relative Humidity |
5%~95% |
