ABYSS 36V On-Board Alternator Charger for trolling motor battery charging using engine alternator power
36V On-Board Alternator Charger for boat battery with smart on-demand charging and wire connections
ABYSS 36V On-Board Alternator Charger for trolling motor battery charging using engine alternator power
ABYSS 36V On-Board Alternator Charger for trolling motor battery charging from engine alternator onboard boats
ABYSS 36V On-Board Alternator Charger for boat trolling motor battery charging using engine alternator
36V On-Board Alternator Charger for boat trolling motor battery with smart on-demand charging and alternator power integration
36V On-Board Alternator Charger for boat battery charging with multiple wires and durable casing
36V On-Board Alternator Charger for trolling motor battery charging using engine alternator power
36V On-Board Alternator Charger with multiple colored wires for trolling motor battery charging
ABYSS 36V On-Board Alternator Charger for trolling motor battery charging using engine alternator power
36V On-Board Alternator Charger for boat battery with smart on-demand charging and wire connections
ABYSS 36V On-Board Alternator Charger for trolling motor battery charging using engine alternator power
ABYSS 36V On-Board Alternator Charger for trolling motor battery charging from engine alternator onboard boats
ABYSS 36V On-Board Alternator Charger for boat trolling motor battery charging using engine alternator
36V On-Board Alternator Charger for boat trolling motor battery with smart on-demand charging and alternator power integration
36V On-Board Alternator Charger for boat battery charging with multiple wires and durable casing
36V On-Board Alternator Charger for trolling motor battery charging using engine alternator power
36V On-Board Alternator Charger with multiple colored wires for trolling motor battery charging

ABYSS® 36V On-Board Alternator Charger

AB-36V-DC

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$349.99
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ABYSS® 36V On-Board Alternator Charger

ABYC Compliant

ABYSS® 36V On-Board Alternator Charger

2-year free replacement warranty

ABYSS® 36V On-Board Alternator Charger

IP68 Water Rating

ABYSS® 36V On-Board Alternator Charger

Ignition Protection

The essential boat upgrade that allows you to charge your 36V trolling motor battery from your engine’s alternator on the go! While underway, your alternator’s excess power redistributes from your starting battery so you get an extra boost, and better battery life for your trolling motor. 

How it works: With state of the art technology, the ABYSS® On-Board Alternator Charger applies 10A of on-demand charging voltage to your 36V battery so it only receives the charging current it needs to replace energy that has been consumed. This smart charging system also works to ensure your cranking battery voltage will not fall below 13.3V, making it a safe and reliable way to keep your trolling motor or aux batteries charged and ready to go.

Features:

- Charges 36V trolling motor batteries
- Utilizes engine's alternator power
- Smart on-demand charging technology
- Protects cranking battery, minimum 13.3V
- Ideal onboard boat battery charger system

Note: Please see Product Manual for proper installation to ensure that your experience with our product is both efficient and secure. Safety and proper functioning of our products is our utmost priority, which is why we strongly recommend installation from one of our authorized dealers or acquaint yourself thoroughly with our detailed product manual before proceeding with the installation process. Adherence to these guidelines is paramount.

ON-BOARD Battery Chargers

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

 

11.9" x 9.6" x 3.8"
304 x 245 x 99mm

 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)

Charging Battery Type

 

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)
 

LED Indicators

Power & Battery Type & Charging Status LED Indicators

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)

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

Cooling Type

 

Aluminium stretched plate and waterproof cooling fan at the bottom of product for better heat dissipation

Ingress Protection

Filled with pure epoxy resin for high waterproof level IP67

 

Circuit Protection

Short-circuit Protection & Reverse Connection Protection & Overcharge Protection & Overtemp Protection

 

Working Temperature Range

 

-10°C~40°C

Nominal Working Temperature

 

25°C

Relative Humidity

 

5%~95%

    This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

    This on-board alternator charger keeps trolling motor batteries topped off while the engine runs, eliminating the need to plug in. Customers praised "top notch customer service" and fast shipping. One guide said "I haven't plugged my charger in since." Described as easy to install, affordable, and high quality. Ideal for extended trips.

    • 5 stars: 18 (100%)
    • 4 stars: 0 (0%)
    • 3 stars: 0 (0%)
    • 2 stars: 0 (0%)
    • 1 star: 0 (0%)
    J
    Josh M (Tampa, US)

    Absolutely amazing! I was tired of plugging my battery charger in when the boat was at the dock. A friend told me about this charger so I did some research. Called up the company and they were incredibly helpful. Bought the charger and installed it in less than an hour. First trip I used up almost the whole battery with my Spot Lock and by the time I got back to the dock it was fully charged. Highly recommended! Thanks Abyss for your incredible product!!!

    User picture
    D
    Dialedinfishing (Winter Haven, US)

    We had our on-board alternator charger stop working just before a fishing tournament in SW Florida, called Abyss customer service, they help diagnose the problem and they overnighted a replacement in time for our tournament. Products and service are second to none. Customer service folks are some of the finest. Jack Conroy, Dialed in Fishing.

    User picture
    G
    Glyn Austin (Palm Bay, US)

    excellent addition for any trolling motor battery. Allows the engine to charge the lithium trolling motor batter when the engine is running. Stayed in the keys for a week and used my trolling motor every day for a long time and we never had to plug it in to recharge the battery because the Abyss on board charger kept it topped off on our daily runs.

    User picture
    C
    Capt Lou Silva (Englewood, US)
    Don’t get any better.

    I’ve been using abyss for a few years now and have watched them grown in technology. As a guide for the last 15 years my trolling motor is an essential tool for my day to day operation. Anysa batteries are a huge part of that as I have the power and knowledge (via app) to know how my day is gonna go. I get 2-3 days on a full charge of heavy use. And then once I added the charge on the go I haven’t plugged my charger in since. Great product and top notch h customer server. I’ve been an abyss guy since they started and will continue until I end my career.

    D
    Daniel Chambers (Seattle, US)
    Quality stuff

    Good quality, American company, good customer service, fast shiping

    What else can you ask for?

    C
    C.R.S.

    Excellent product and fast shipping!!!

    D
    Doug Daimler (Atlanta, US)
    Onboard charger

    Works great, should have installed a long time ago.

    J
    JASON JONES (Fort Collins, US)
    On the run

    Excited at the simplicity. Look forward to seeing in action

    A
    Alain Wichner (Windermere, US)
    Great additional equipment

    A very affordable solution to insuring the trolling motor battery does not go dead when out to the sea!

    E
    Ed Bailey (Newport, US)

    Small and very good quality.Easy to install and promptly delivered.

    F
    Frank Hutchko (Redington Shores, US)

    OUTSTANDING CHARGER !! Price ..customer service and install were all 5 ⭐️⭐️⭐️⭐️⭐️.

    R
    Rex Hungerford (Seattle, US)

    Got busy and fishing season ended so I don't think the unit will be installed for many months.

    M
    Mark Nichols (Atlanta, US)
    DC charger

    Fish all day on spot lock. No worries about battery power now. Super easy install. All my buddies are now envious!

    J
    John McCaul (Muskegon, US)

    ABYSS® 36V On-Board Alternator Charger

    C
    Carl Bodkins (Los Angeles, US)
    My neighbor loves his

    I travel for a living and haven’t had time to install the charger yet. Hope to next month!

    D
    Dick Logue (Marco Island, US)

    Everybody I talk to was very helpful order was very fast had a problem with the charger no questions asked they sent me a new one the next day it worked perfect I would like to thank the staff for being so helpful

    R
    RONALD JAGO (Palmetto, US)

    ABYSS® 36V On-Board Alternator Charger

    R
    Robert Lutts (Tarpon Springs, US)
    Great option for my Boat

    I do not have access to shore power on a regular basis so having the on board charger is an excellent alternative for my situation.

    Experience Unparalleled Durability with Rugged Construction

    Unlock Smart and Efficient Charging

    Embark on your marine adventures with confidence, thanks to our IP68 waterproof design. Abyss batteries are crafted to withstand the harshest marine environments, ensuring your power source remains safe and reliable, no matter the conditions.

    Experience the ultimate convenience with our advanced charging technology. Get the quickest, most intelligent, and efficient charge for your lithium battery. Our innovative LED lights provide real-time monitoring of connection, power status, and state of charge, keeping you informed and in control.

    How to Select the Perfect Lithium Battery Charger for Your Boat Batteries

    When it comes to powering your marine adventures, choosing the right lithium battery charger is crucial.

    At Abyss Battery, we understand the importance of reliability and durability in the harsh marine environment. That's why our chargers are engineered to withstand the toughest conditions.

    Our chargers boast a robust, shock-resistant, and vibration-resistant construction, ensuring they remain operational even in the most challenging situations.

    Additionally, they are fully waterproof with an IP68 rating, providing complete protection against water ingress. We've also rigorously saltwater tested our chargers to guarantee they can resist corrosion, a common issue in marine settings.

    Investing in an Abyss Battery charger means choosing peace of mind, knowing your marine lithium batteries will be charged efficiently and safely, no matter where your journey takes you.

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