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NOCO GEN On-Board Battery Charger - AC to DC - Waterproof - 3 Bank - 12V - 15 Amp

NOCO GEN On-Board Battery Charger - AC to DC - Waterproof - 3 Bank - 12V - 15 Amp

Item # NOC94FR
Our Price: $199.95
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Battery Charger
Shipping Weight: 8 lbs
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Submersible, on-board smart charger draws power from a wall outlet to charge and maintain up to (3) 12V batteries at 5-amps. Fully-sealed, waterproof construction is ideal for marine applications. Saltwater tested and ignition protected for safety. 1-800-940-8924 to order NOCO battery charger part number NOC94FR or order online at Free expert support on all NOCO products. Great prices and Fastest Shipping for NOCO GEN On-Board Battery Charger - AC to DC - Waterproof - 3 Bank - 12V - 15 Amp. Battery Charger reviews from real customers.
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  • Reviews (23)
  • Q & A (0)
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NOCO Battery Charger - NOC94FR

  • Boat
  • Electric Vehicle
  • Generator
  • Trolling Motor
  • 12V
  • Battery Charger
  • NOCO
  • Wall Outlet to Vehicle Battery
  • Charges/Maintains
  • 120 Ah

Submersible, on-board smart charger draws power from a wall outlet to charge and maintain up to (3) 12V batteries at 5-amps. Fully-sealed, waterproof construction is ideal for marine applications. Saltwater tested and ignition protected for safety.


  • On-board AC-to-DC smart charger quickly charges and maintains up to 3 batteries
    • Perfect for boats, trolling motors, generators, electric vehicles, and industrial equipment
  • 3 Battery banks allow multiple 12V batteries to be charged simultaneously
    • Provides full charge output even with low or varying AC current input
  • Multiple battery profiles let you charge a variety of battery types
    • 12V Modes - normal, AGM, and lithium-ion,
    • Force mode - charge dead batteries below 1-volt
  • Multi-stage charging algorithm charges 2x faster than traditional chargers without overcharging
    • Analyzes battery condition to provide a customized charge
    • Built-in battery desulfator restores lost battery capacity
  • Heavy-duty 3/8" eyelet connectors provide maximum contact with terminals
    • Built-in 7.5-amp fuses protect electronics from dangerous overloads
  • Completely sealed, waterproof design is fully submersible - perfect for marine applications
    • Tested to resist saltwater corrosion
  • AC port plug (sold separately) creates a connection point for easy access to AC power


  • Application: 12V batteries up to 120 amp-hours
  • Battery types supported: wet cell, gel cell, AGM, enhanced flooded, maintenance-free, and Lithium-ion
    • Lithium-ion batteries must have bettery management systems (BMS)
  • Number of battery banks: 3
  • Maximum charging amperage: 15 amps
    • 5 amps per battery bank
  • Eyelet cable length: 72"
  • AC cable length: 72"
  • Working voltage: 120 - 240 VAC (50 - 60 Hz)
  • Maximum power consumption: 220 watts
  • Low voltage detection rating: 1-volt
  • IP rating: 68
  • Dimensions: 7-15/16" long x 6-1/2" wide x 2-1/4" thick
  • Weight: 5.76 lbs
  • 3-Year limited warranty

NOCO GEN5x3 On-Board Marine Battery Charger Diagram

The rugged NOCO Genius GEN series on-board smart charger quickly charges and maintains up to (3) 12-volt lead-acid and lithium-ion batteries, simultaneously. Multiple battery banks efficiently charge deep cycle and starter batteries up to 120 amp-hours. It's great for boats, trolling motors, generators, and a wide range of electric vehicles and industrial equipment. With a fully submersible design, this smart charger was built to handle harsh marine environments, while keeping your batteries in peak condition.

User-Friendly Interface with LED Indicators

NOCO Genius GEN5X3 LED Charging Indicators

This Genius smart charger was designed to provide a simple, user-friendly experience. The mode buttons allow you to easily cycle through the unit's charge settings on each connection. Back-lit LED indicators let you verify that the unit is operating correctly, and they allow it to be easily operated at night. These indicators signal the unit's charge status, selected charging mode, and alert you to potential performance issues or errors.

NOCO Genius GEN5X3 Advanced Battery Error Diagnostics

These indicators allow you to quickly identify a problem with the battery or connection. So you don't have to waste time guessing if the battery voltage is too high or too low for your selected mode, or worry about damage from a reversed polarity connection to a battery.

4 Battery Charging Modes for 12V Batteries

NOCO Genius GEN5X3 Genius Battery Charger Charging Modes Explained

This Genius smart charger has 4 selectable charging modes that let you quickly switch between charging different lead-acid and lithium-ion battery types. Traditional battery chargers generally only work with a specific voltage or battery type, like lithium-ion or AGM batteries, or only in special circumstances like charging in cold environments. This NOCO charger gives you the versatility to tackle different battery types and charging situations in one charger.

The charger works with 12V wet cell, gel cell, enhanced flooded, calcium, maintenance free, AGM, and lithium-ion batteries with battery management systems (BMS). A built-in battery desulfator restores lost capacity to sulfated and old batteries.

Heavy-Duty Eyelet Connectors

3 Sets of 3/8" eyelets connect the charger to your batteries. Over-molded connection points stand up to heavy usage and keep connections safe from the elements. Built-in 7.5-amp fuses protect each connection against dangerous overcurrent.

Quickly Charge and Maintain Batteries from 120V to 240V AC Power Source

This Genius charger plugs into an available wall outlet to quickly charge and maintain multiple batteries. High-frequency switch-mode technology converts AC power into safe DC power to fully charge batteries. An onboard microcomputer monitors and controls this charging process to minimize power loss and maximize efficiency. Included hardware lets you mount the unit in an enclosed compartment, garage, or workspace.

NOCO GEN5x3 On-board Battery Charger Charging Times Diagram

The table above provides a quick reference for how long it will take the unit to charge batteries with various amp-hours.

Rugged Submersible Design

NOCO GEN5x3 Waterproof and Ignition Proof Design

This on-board charger was built to handle extreme marine conditions. The unit has an IP68 rating, which means it can handle being fully submerged in water, and it's protected against solid particles like dust or sand. Its ignition protected for safe and worry-free operation around marine engine compartments and fuel tank spaces. Saltwater won't cause issues either. The charger has been thoroughly tested to resist corrosion.

The housing is made from tough Lexan resin that protects the internal electronics against vibration and impacts. The unit can handle being dropped, kicked over, and just about anything else your day brings.

AC Port Plug for Plug-and-Play Charging

NOCO GEN2 GCP AC Port Accessory

Available AC port plugs (sold separately) from NOCO let you easily setup your GEN series charger for plug-and-play charging with any extension cord. The plug creates a "pass through" AC charging port on a surface, so you can quickly connect to the charger when it's mounted inside a compartment on a truck, boat, trailer or RV. This allows you to easily access the charger for charging engine block heaters, trolling motors, batteries, and other equipment. A snap-fit cap creates a watertight seal to protect the connection whenever you're done.

GEN5X3 NOCO Genius GEN On-Board Marine Smart Battery Charger - AC to DC - Waterproof - 3 Bank - 12V - 15 Amp

Installation Details NOC94FR Installation instructions

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Customer Satisfaction Score:

Customer Reviews

NOCO GEN On-Board Battery Charger - AC to DC - Waterproof - 3 Bank - 12V - 15 Amp - NOC94FR

Average Customer Rating:  4.9 out of 5 stars   (23 Customer Reviews)

Submersible, on-board smart charger draws power from a wall outlet to charge and maintain up to (3) 12V batteries at 5-amps. Fully-sealed, waterproof construction is ideal for marine applications. Saltwater tested and ignition protected for safety.


Works with alot of batteries and works like a charm.


Easy installation and a quality produc t.








Noco 2x5 battery charger is very easy to install. Bought it for the bass boat. Compact size and lighter weight than others on the market simple to use. So far so good


Delivered in a timely manner after placing the order.


Very pleased with purchase and the process, even was delivered a day before what they said


Heavvy Duty and easy to operate


Outstanding battery maintainer especially for smaller batteries below group 31 including AGM.

Weather resistant that is simple to install.

Always great service from e-trailer with great customer service.


high quality items and fast service!


Don't know i haven't installed it yet, but in sure it will be ok










See what our Experts say about this NOCO Battery Charger

  • Recommended Charger for 2018 Jeep Wrangler JLU With Main and Aux Battery
    The NOCO Genius Smart Battery Charger - AC to DC - 6V/12V - 10 Amp # 329-GENIUS10 is a great option for charging your batteries. The way your batteries are connected would be good to know. If they are in true parallel this will work well. If there is a solenoid involved, then your second battery won't receive power unless the ignition is on, so if that is the case you would need to have a second bank connection for a multiple battery charger like # NOC94FR or a complete separate charger.
    view full answer...
  • Can The NOCO Gen Battery Charger NOC94FR Charge 3 Lithium Batteries?
    The NOCO GEN On-Board Battery Charger - AC to DC - Waterproof - 3 Bank - 12V - 15 Amp # NOC94FR does work with 3 lithium batteries as long as they have a BMS (battery management system) such as the The Manager30 Battery Management System with Lithium Profile # RED88FR. A better option for you may be the OptiMate Lithium 4s Smart Battery Charger - AC to DC - 12V - 4 Bank - 0.8 Amps # MA97JR which works without a battery management system. It has built-in BMS protection and charges up to...
    view full answer...
  • Can Different Capacity Batteries Be Charged Together
    Batteries should always be charged individually. If you had two identical batteries but one is new and the other is a year old and has been through many charge/depletion cycles, the new one will pull in more of the charging power because it is in better shape. Batteries age and become less able to accept a charge effectively. Batteries connected together can result in one slowing the rate of charge on the other. Batteries with very different Amp-Hour ratings, like a 100-Ah and a 270-Ah...
    view full answer...
  • How Much Battery Power Is Needed to Operate Electric Tongue Jacks
    Your specific battery's amp-hour rating (Ah), its condition and the specific jack in use will determine how many uses you will get before your battery is drained. Powered trailer tongue jacks like the Bulldog # BD500188 and the Stromberg Carlson # JET-5000, as examples from those on the linked page, can draw substantial power. The specific power drawn by the jack depends on the particular jack and the actual load that is on it. The Stromberg Carlson # JET-5000 will pull about 30-amps...
    view full answer...
  • Can Redarc BCDC Battery Charger # 331-BCDC1240D Be Used to Charge 2 Trailer Batteries
    I spoke with my contact at Redarc regarding the In-Vehicle BCDC Battery Charger # 331-BCDC1240D. He said this unit could charge two batteries on the trailer but only if they were pretty close together and of the same chemistry. If this is the case then you can add the Redarc Smart Start Battery Isolator # 331-SBI12 between the two batteries to prevent one feeding into the other. I have attached a short video review that you can check out as well. Otherwise your best option for charging...
    view full answer...
  • Types of Battery Chargers for Auxiliary Battery on Dump Truck/Trailer
    We do offer battery chargers, including AC-powered unit like NOCO Genius # NOC94FR and DC-powered types like Redarc # 331-BCDC1225D, as well as Solar panel chargers like # PTW2997 that help maintain your auxiliary battery whenever sunlight is available. The vehicle wiring kits we sell are generally limited to passenger vehicles to allow them to tow recreational trailers. If you are looking for a heavy-duty wiring kit to deliver power to your dump bed motor this would best be sourced from...
    view full answer...
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Info for this part was:

Employee Andrew K
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