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  • NOCO Genius GENPRO10X4: 4-Bank, 40A Onboard Battery Charger - 10A Per Bank, 12V Waterproof Marine Charger with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries
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NOCO Genius GENPRO10X4: 4-Bank, 40A Onboard Battery Charger - 10A Per Bank, 12V Waterproof Marine Charger with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries

4.6 out of 5 stars 960 ratings
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Purchase options and add-ons

Brand NOCO
Colour Black
Product Dimensions 35D x 15.4W x 29.6H Centimetres
Item weight 7.7 kg
Output voltage 12 Volts
Specification met CSA, UL, RoHS
Input voltage 120 Volts
Charging time 1 Hours
Current rating 40 Amps
Global Trade Identification Number 00046221190502

About this item

  • MEET THE GENPRO10X4 — 10% smaller and 33% more powerful than the GEN4. It’s our most compact and advanced onboard charger yet - engineered for peak performance in the harshest marine environments.
  • MULTIPLE BANKS — A four-bank onboard battery charger rated at 40 amps total - 10 amps per bank. Independently charge 12V batteries in marine, boat, starter, and deep-cycle systems.
  • CHARGING MODES — Selectable modes for each bank: 12V, 12V AGM, 12V Lithium, and 12V Repair Mode. Independently charge and maintain all types of lead-acid and lithium-ion batteries with precision.
  • ENJOY PRECISION CHARGING — An integrated thermal sensor adjusts charging based on ambient temperature, preventing overcharging in heat and undercharging in cold for optimal battery performance.
  • CHARGE DEAD BATTERIES — Charge batteries from as low as 1 volt, or use Force Mode to manually begin charging batteries down to zero volts to recover deeply discharged or neglected batteries.
  • REDEFINED MOUNTING — A simplified mounting system allows for fast, secure installation in any orientation - even upside down - with an integrated anti-vibration backing to isolate shock and noise.
  • DESIGNED FOR WATER — A fully-sealed onboard charger rated IP68 for waterproof protection. Survives brutal life cycle testing, including thousands of hours underwater in the harshest marine conditions.
  • WHAT’S IN THE BOX — GENPRO10X4 40A 4-bank onboard charger with 72-inch DC cables and 3/8-inch eyelets, 72-inch AC cable (Type-B), and two mounting screws. Backed by a 3-year warranty and engineered in the USA.

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NOCO GENIUS2X4: 8A 4-Bank Smart Battery Charger (2A/Bank) - 6V/12V Automatic Maintainer, Trickle Charger & Desulfator with Ov
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Top Brand: NOCO

Highly Rated
100K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
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  10. Established in 1914, NOCO designs and creates premium consumer battery chargers, jump starters, lithium batteries, and a wide range of accessories. Through these world-class offerings, we have effectively set a new standard in design, performance, and safety. We aim to make exceptional products that provide consumers with the ultimate experience. We challenge conventionality and remain vigilant to the highest quality standards. We are NOCO.

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From the manufacturer

NOCO Genius GENPRO10X4, 4-Bank, 40A, Smart Marine Charger, 12V Onboard Battery Charger, Maintainer

GENPRO10X4

GEN5X1

GEN5X2

GEN5X3

GENPRO10X1

GENPRO10X2

GENPRO10X3

Customer Reviews
4.6 out of 5 stars 960
4.6 out of 5 stars 2,170
4.6 out of 5 stars 5,772
4.5 out of 5 stars 3,078
4.7 out of 5 stars 1,453
4.6 out of 5 stars 1,427
4.6 out of 5 stars 1,383
Charging Current
40 Amps 5 Amps 10 Amps 15 Amps 10 Amps 20 Amps 30 Amps
Number of Banks
4 1 2 3 1 2 3
Battery Capacity
230Ah x 4 Banks 120Ah 120Ah X 2 Banks 120Ah X 3 Banks 230Ah 230Ah x 2 Banks 230Ah x 3 Banks
Output Power
600W 72W 145W 220W 150W 300W 450W
Waterproof
✔ ✔ ✔ ✔ ✔ ✔ ✔

Product description

The NOCO GENPRO10X4 is a high-performance, fully-sealed onboard battery charger rated at 40 amps total—10 amps per bank—built to simultaneously charge and maintain up to four 12-volt batteries. Compatible with all types of lead-acid and lithium-ion batteries—including flooded, AGM, gel, and LiFePO₄—the GENPRO10X4 delivers 19% more power in a housing that’s 27% smaller than the previous-generation GEN4. Each of the four banks functions independently, giving you the flexibility to charge different battery types, chemistries, or states of charge at the same time. With selectable charging modes for 12V, AGM, Lithium, and Repair, the GENPRO10X4 ensures optimal battery care and performance across a wide range of applications. An integrated thermal sensor dynamically adjusts the charging profile based on temperature to prevent undercharging in the cold or overcharging in hot climates. For heavily discharged batteries, Force Mode provides manual charging capability down to zero volts—critical for reviving batteries other chargers can’t detect. Built to withstand the toughest marine conditions, the GENPRO10X4 is IP68-rated for waterproofing and has passed rigorous life cycle testing, including thousands of hours of submersion. Its compact footprint and advanced mounting system make installation fast and secure in any position—even upside down—while an integrated anti-vibration backing minimizes shock and noise. Included in the box are 72-inch DC cables with 3/8-inch eyelets, a 72-inch Type-B AC cable, two mounting screws, and a user guide. The GENPRO10X4 is backed by a 3-year warranty, engineered in the USA, and certified to UL1236, ISO 8846, and 33 CFR 183.410 for marine ignition protection and safety compliance.

Product information

Technical Details

Manufacturer ‎NOCO
Place of Business ‎SOLON, OH, 44139 US
Brand ‎NOCO
Model ‎GENPRO10X4
Product Dimensions ‎35 x 29.59 x 15.39 cm; 7.7 kg
Item model number ‎GENPRO10X4
Batteries ‎4 12V batteries required.
Manufacturer part number ‎GENPRO10X4
Special features ‎Force Mode For Manual Battery Charging, Onboard Marine Battery Charger For Boats And More, Onboard Battery Maintainer, Trickle Charger And Battery Desulfator, Spark-Proof And Reverse Polarity Protection, Waterproof IP68 Ingress Protection, Temperature Compensation For Accurate Recharging
Voltage ‎12 Volts
Item Weight ‎7.7 kg
Country of origin ‎China

Additional Information

ASIN B08G38VWQ6
Customer Reviews
4.6 out of 5 stars 960 ratings

4.6 out of 5 stars
鶹 Rank
Date First Available Aug. 18 2020

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NOCO Genius GENPRO10X4: 4-Bank, 40A Onboard Battery Charger - 10A Per Bank, 12V Waterproof Marine Charger with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries

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Customer reviews

4.6 out of 5 stars
960 global ratings

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Customers say

Customers like the quality and installation of the battery charger. They mention it seems decent and easy to install.

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QualityInstallation
4 customers mention "Quality"4 positive0 negative

Customers are satisfied with the quality of the battery charger. They mention it seems decent.

"awesome quality product and very easy to install! 1/2 the size of my old onboard charger..." Read more

"Excelent product..." Read more

"seems decent..." Read more

"Great Product!..." Read more

3 customers mention "Installation"3 positive0 negative

Customers like the installation of the battery charger. They mention it's easy to install and charges very quickly.

"awesome quality product and very easy to install! 1/2 the size of my old onboard charger..." Read more

"I was able to install this with no problems and was impressed with how quick it charges." Read more

"Simple but expensive..." Read more

best charger on the market
5 out of 5 stars
best charger on the market
awesome quality product and very easy to install! 1/2 the size of my old onboard charger you can manually choose to charge different types of batteries from wet cells to AGM and Lithium wich makes it a very versatile charger
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Top reviews from Canada

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  • 鶹 Customer
    5.0 out of 5 stars Excelent product
    Reviewed in Canada on November 11, 2023
    Verified Purchase
    Excelent product a little expensive but very trustable is on a commercial boat and works very well
    Helpful
     Report
  • Dominique Campeau
    5.0 out of 5 stars best charger on the market
    Reviewed in Canada on October 8, 2021
    Verified Purchase
    awesome quality product and very easy to install!
    1/2 the size of my old onboard charger
    you can manually choose to charge different types of batteries from wet cells to AGM and Lithium wich makes it a very versatile charger
    Customer image
    Dominique Campeau
    5.0 out of 5 stars
    best charger on the market

    Reviewed in Canada on October 8, 2021
    awesome quality product and very easy to install!
    1/2 the size of my old onboard charger
    you can manually choose to charge different types of batteries from wet cells to AGM and Lithium wich makes it a very versatile charger
    Images in this review
    Customer image
    2 people found this helpful
    Helpful
     Report
  • Ernie Carlson
    5.0 out of 5 stars Exactly what I needed for the boat
    Reviewed in Canada on March 1, 2024
    Verified Purchase
    The charger is small enough but powerful enough to charge all four batteries. 4 of my buddies have bought the same charger. Charges fast. Cables are long enough to run to the bow of the boat.
    Helpful
     Report
  • Primer
    5.0 out of 5 stars Versatile Battery Charger
    Reviewed in Canada on August 5, 2022
    Verified Purchase
    I love that this charger. It will charge many types of batteries including lithium batteries. I checked with the manufacturer of the lithium batteries and he confirmed that this charger would do the job!....
    Helpful
     Report
  • Guy Guimont
    4.0 out of 5 stars Merci
    Reviewed in Canada on July 23, 2025
    Verified Purchase
    Merci
    Helpful
     Report
  • Rob
    5.0 out of 5 stars Very highly recommend this. Easy to install and charges very quick!
    Reviewed in Canada on April 6, 2022
    Verified Purchase
    I was able to install this with no problems and was impressed with how quick it charges.
    Helpful
     Report
  • Biguy .com
    5.0 out of 5 stars charges well
    Reviewed in Canada on April 20, 2023
    Verified Purchase
    i like everything about charger only downfall is it is very heavy
    Helpful
     Report
  • Norman Martin
    5.0 out of 5 stars works very nice
    Reviewed in Canada on July 13, 2023
    Verified Purchase
    works nice
    Helpful
     Report

Top reviews from other countries

  • 鶹 customer
    5.0 out of 5 stars Great charger for boat.
    Reviewed in the United States on March 31, 2025
    Verified Purchase
    Works great was easy to install and set up. Charges lead acid and lithium batteries all at the same time.
    Report
  • Champ198
    5.0 out of 5 stars Great charger!
    Reviewed in the United States on May 19, 2025
    Verified Purchase
    I love this charger. Pros: Each of the four charging banks can be set for wet cell, AGM, or Lithium batteries. I use it to charge four lithium batteries in my boat. Each battery type has a different indicatory light and charge indicator lights let you know what stage of charge the battery is in. When a battery is charged, you see a nice, bright green indicator. Great charger. Cons: It's expensive (but it's got the features and battery management I need), big and heavy.
    Report
  • Stephen S.
    5.0 out of 5 stars Works great
    Reviewed in the United States on June 13, 2025
    Verified Purchase
    Love it! Charges my boats lead acid starting battery and my two AGM batteries
    Report
  • matt
    5.0 out of 5 stars Must have.
    Reviewed in the United States on March 12, 2025
    Verified Purchase
    Does exactly what it supposed to do charges my batteries on my boat plug it up let it charge up my batteries for a worry free day on the water the next day and it seems very heavy so that tells me hopefully it’s very well designed and built.
    Report
  • Alan
    5.0 out of 5 stars Battery charger for my bass boat
    Reviewed in the United States on June 28, 2025
    Verified Purchase
    I put this in my triton bass boat and it works great. Highly recommended it.
    Report