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NOCO Genius On-Board Battery Charger - AC to DC - Waterproof - 4 Bank - 12V - 40 Amp

NOCO Genius On-Board Battery Charger - AC to DC - Waterproof - 4 Bank - 12V - 40 Amp

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Battery Charger
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329-GEN4 - Charges Only NOCO Battery Charger
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Submersible, on-board smart charger draws power from a wall outlet to charge and maintain up to (4) 12V batteries at 10-amps. Fully-sealed, waterproof construction is ideal for marine applications. Saltwater tested and ignition protected for safety. Call 800-298-8924 to order NOCO battery charger part number 329-GEN4 or order online at etrailer.com. Free expert support on all NOCO products. Guaranteed Lowest Price and Fastest Shipping for NOCO Genius On-Board Battery Charger - AC to DC - Waterproof - 4 Bank - 12V - 40 Amp. Battery Charger reviews from real customers.
  • All Info
  • Reviews (2)
  • Q & A (8)
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  • Why etrailer?

NOCO Battery Charger

  • Battery Charger
  • Boat
  • Trolling Motor
  • Generator
  • Electric Vehicle
  • Industrial Equipment
  • NOCO
  • 12V
  • Wall Outlet to Vehicle Battery
  • Charges Only
  • AC to DC
  • 230 Ah

Submersible, on-board smart charger draws power from a wall outlet to charge and maintain up to (4) 12V batteries at 10-amps. Fully-sealed, waterproof construction is ideal for marine applications. Saltwater tested and ignition protected for safety.


Features:

  • On-board AC-to-DC smart charger quickly charges and maintains up to 4 batteries
    • Perfect for boats, trolling motors, generators, electric vehicles, and industrial equipment
  • 4 Battery banks allow multiple 12V batteries to be charged simultaneously
    • Provides full charge output even with low or varying AC current input
  • 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 15-amp fuses protect electronics from dangerous overloads
  • Completely sealed, waterproof design is fully submersible - perfect for marine applications
    • Tested to resist saltwater corrosion
  • Meets USCG-33 CFR 183.410 requirements for ignition protection
  • AC port plug (sold separately) creates a connection point for easy access to AC power


Specs:

  • Application: 12-volt lead-acid batteries rated up to 230 amp-hours
  • Battery types supported: wet cell, gel cell, AGM, enhanced flooded, and maintenance-free batteries
  • Number of battery banks: 4
  • Maximum charging amperage: 40 amps
    • 10 amps per battery bank
  • Eyelet cord length: 75-1/2"
  • AC cord length: 72"
  • Working voltage: 70 - 130 VAC (50 - 60 Hz)
  • IP rating: 68
  • Dimensions: 11-3/8" long x 9-1/2" wide x 3-1/8" thick
  • Weight: 15.6 lbs
  • 5-Year limited warranty


NOCO GEN4 On-Board Marine Battery Charger Diagram

The rugged NOCO Genius GEN4 on-board smart charger quickly charges and maintains up to (4) 12-volt lead-acid batteries, simultaneously. Multiple battery banks efficiently charge deep cycle and starter batteries up to 230 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, the GEN4 was built to handle harsh marine environments, while keeping your batteries in peak condition.


Multi-Stage Smart Charging Technology

The NOCO GEN4 smart charger uses an 8-stage charging cycle to quickly and efficiently charge your battery. This ensures that the battery safely reaches maximum capacity without being overcharged.


NOCO GEN4 Genius Battery Charger Advanced Smart Charging Technology

In the first step of the charging process, the charger will analyze the battery's condition and state of charge. The charger then uses this data to diagnose the battery's health and ensure it can be safely charged. If the battery is deeply discharged or sulfated, the charger will automatically enter the recovery stage to repair the battery by pulsing small amounts of current.


Once the unit has determined that the battery's condition is stable, it will initialize the charging process by providing a constant, gentle charge. The charger gradually increases the charge during the bulk stage and quickly charges the battery to 80-percent capacity.


As the battery nears full charge, the GEN4 enters the absorption stage and delivers small amounts of current to limit battery gassing and safely bring the battery to 90-percent capacity. The charger will then begin optimization of the battery, bringing it to full capacity and optimizing it for increased run time and performance.


The final step of the charging process, maintenance, monitors the battery for drops in power and supplies the correct current to keep it fully charged. If a drop in voltage is detected, the charger will begin the optimization cycle to keep the battery fully charged.


Heavy-Duty Eyelet Connectors

NOCO GEN4 Heavy-Duty Eyelets

4 Sets of 3/8" eyelets connect the GEN4 to your batteries. Over-molded connection points stand up to heavy usage and keep connections safe from the elements. Built-in 15-amp fuses protect each connection against dangerous overcurrent.


Quickly Charge and Maintain Batteries from 120VAC Power Source

NOCO GEN4 AC Plug for Wall Outlet Charging

The GEN4 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 GEN4 On-board Battery Charger Charging Times Diagram

The table above provides a quick reference for how long it will take the GEN4 to charge batteries with various amp-hours.


Rugged Submersible Design

NOCO GEN4 Waterproof and Ignition Proof Design

The GEN4 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 GEN4 GCP AC Port Accessory

Available AC port plugs (sold separately) from NOCO let you easily setup your GEN4 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.



GEN4 NOCO Genius On-Board Marine Smart Battery Charger - Submersible - AC to DC - 4-Bank - 40 Amp - 12V

Item # 329-GEN4

Installation Details 329-GEN4 Installation instructionsAlternate Instructions 329-GEN4 Installation instructions


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Customer Reviews

NOCO Genius On-Board Battery Charger - AC to DC - Waterproof - 4 Bank - 12V - 40 Amp - 329-GEN4

Average Customer Rating:  4.5 out of 5 stars   (2 Customer Reviews)

Submersible, on-board smart charger draws power from a wall outlet to charge and maintain up to (4) 12V batteries at 10-amps. Fully-sealed, waterproof construction is ideal for marine applications. Saltwater tested and ignition protected for safety.

- 329-GEN4
by:

Contacted etrailer.com about charging K2 Energy Lithium Ion marine batteries. They took the time to contact NOCO Genius chargers to get me the correct answers. NOCO said absolutely that this would be the correct charger for lithium ion marine batteries. I am now confident that my investment of Lithium batteries will get the correct charge they require. The NOCO genius charger is lighter and smaller than my previous charger allowing more room and less weight in my boat. 480215



- 329-GEN4
by:

Easy to install.I ran two days on my 36 volt in my 2012 -9 Nitro ,put in the Gen 4 in yesterday and had four green lights in 6 hours . Thanks E- trailer 525833


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Ask the Experts about this NOCO Battery Charger

  • Can Leads on NOCO Genius On-Board Battery Charger be Extended?
    The leads on the NOCO Genius On-Board Battery Charger # 329-GEN4 can be extended up to 10' but only after the inline fuse. The manufacturer does not recommend extending the AC cord or modifications between the inline fuse and the charger. To add protection you should add another inline fuse closer to the battery with fuse holder # SWC9538 and 15 amp fuse part # C58450-1. This charger will work with the NOCO Genius AC Port Plug with Extension Cord # 329-GCP1 which is 16" long and that...
    view full answer...
  • Using NOCO Genius GEN4 Battery Charger for Two 12V Batteries and Four 6V Batteries
    I spoke with my contact at NOCO regarding the use of the GEN4 Genius On-Board Battery Charger # 329-GEN4 for your application. She stated that this will work great to charge your two 12V batteries and four 6V batteries. What you will need to do is pair up the four 6V batteries and wire each of the two pairs in series so they have a 12V output (see attached image). Once you do this you will hook up the terminal ends of the GEN4 as follows: - Bank 1 to the first 12V battery - Bank...
    view full answer...
  • Extending the Charger Lead Wires on NOCO Genius Battery Charger
    The NOCO Genius On-Board Battery Charger # 329-GEN4 does not have the extensions like the NOCO Accessories X-Connect Extension Cable - 10' Long # 329-GC004. If you were to extend the wires from the manufacturer, you would need to so without altering the ring terminals or you would void the manufacturer warranty. The NOCO DC leads can be extended up to 10 additional feet after the inline fuse but not before it. NOCO does not recommend any modifications between the inline fuse and the...
    view full answer...
  • What Gauge Wire Are The DC Leads Of NOCO Genius On-Board Battery Charger For Extension
    The NOCO Genius Mini On-Board Battery Charger part # 329-GEN4 DC leads are 14 gauge wire. The NOCO DC leads can be extended up to 10 additional feet after the inline fuse but not before it. NOCO does not recommend any modifications between the inline fuse and the charger itself. They also do not recommend to extend the AC cord at all. For more protection you can add another inline fuse closer to the battery if you decide to extend the DC leads with part # SWC9538 and 15 amp fuse part...
    view full answer...
  • One Battery Is Taking Longer To Charge Than the Other When Using the NOCO Genius 4-Bank On-Board
    In regards to the NOCO Genius On-Board Battery Charger part # 329-GEN4, I spoke with NOCO and they wanted me to have you test the voltage at the battery to get a baseline reading and then again in a few hours to see if it has gone up. That said, all batteries are going to charge differently so it could very well be that one battery is just taking longer than the other and there are not any problems. If the voltage does not increase after a few hours go by then check all your connections...
    view full answer...
  • Can UltraSafe Battery Charger with JumpCharge Engine Start be Used with 4-Bank Battery Setup
    The NOCO Genius UltraSafe Battery Charger with JumpCharge Engine Start # 329-G15000 is designed more with a single battery in mind. Since you have a 4-bank battery setup you need the NOCO Genius On-Board Battery Charger # 329-GEN4 instead. If you have 6V batteries for your bank (which is becoming more common) then you need the NOCO Genius UltraSafe Battery Charger and Maintainer # 329-G4 instead which is designed for both 6V and 12V systems. It just charges a bit slower than the other...
    view full answer...
  • Recommended Truck Camper Dual Battery Charging System
    The NOCO Genius Mini On-Board Battery Charger - AC to DC - 2-Bank - 8 Amp # 329-GENM2 will work for a shore power to batter power charger for batteries up to 120 amp hours. If your batteries are larger then you will need the NOCO Genius On-Board Battery Charger - AC to DC - 4-Bank - 40 Amp - 12V # 329-GEN4 to charge batteries up to 230 amp hours. Most truck campers will instead use a DC to DC charger for the camper batteries. If your batteries are under 200 amp hours, I recommend the...
    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...
    view full answer...

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Info for this part was:

Installed by:
Cole B
Edited by:
Daron K
Written by:
Brian T

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