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  • VIDEO
  • 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
  • NOCO Genius GENPRO10X3, 3-Bank, 30-Amp (10-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12...Merchant Video

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 (1,047)
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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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Product details

  • Batteries ‏ : ‎ 4 12V batteries required.
  • Product Dimensions ‏ : ‎ 7.11 x 28.96 x 23.11 cm; 7.7 kg
  • Manufacturer ‏ : ‎ NOCO
  • ASIN ‏ : ‎ B08G38VWQ6
  • Item model number ‏ : ‎ GENPRO10X4
  • Country of origin ‏ : ‎ China
  • Department ‏ : ‎ Unisex-Adult
  • Customer Reviews:
    4.6 out of 5 stars (1,047)

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 1,047
4.7 out of 5 stars 2,403
4.6 out of 5 stars 6,194
4.5 out of 5 stars 3,287
4.6 out of 5 stars 1,531
4.6 out of 5 stars 1,518
4.6 out of 5 stars 1,469
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 ‎7.11 x 28.96 x 23.11 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 Battery Maintainer, Trickle Charger And Battery Desulfator, Onboard Marine Battery Charger For Boats And More, Spark-Proof And Reverse Polarity Protection, Temperature Compensation For Accurate Recharging, Waterproof IP68 Ingress Protection
Amperage ‎40 Amps
Voltage ‎12 Volts
Item Weight ‎7.7 kg
Country of origin ‎China

Additional Information

ASIN B08G38VWQ6
Customer Reviews
4.6 out of 5 stars (1,047)

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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  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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Top Brand: NOCO

Highly Rated
100K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Customer reviews

4.6 out of 5 stars
1,047 global ratings

Customers say

The battery charger works very well and is described as a quality product. Customers find the installation easy and straightforward. The charger charges fast and optimizes the charging process, successfully charging all batteries. Users appreciate its versatility, though they have mixed opinions on battery life and size.
AI Generated from the text of customer reviews

Select to learn more

37 customers mention reliability, 29 positive, 8 negative
Customers find the battery charger reliable and report that it works very well with no issues. The charger performs great and works fine in warm weather conditions.
...little expensive but very trustable is on a commercial boat and works very wellRead more
works niceRead more
29 customers mention quality, 27 positive, 2 negative
The battery charger receives positive feedback for its quality, with customers describing it as a very good product and quality charger. Some find it great for boat use, though one customer reported receiving a defective unit out of the box.
Great Product!...Read more
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
13 customers mention installation, 10 positive, 3 negative
Customers find the battery charger easy to install and set up. The device seamlessly integrates into existing electrical systems and operates with simple plug-and-play functionality.
Very highly recommend this. Easy to install and charges very quick!...Read more
awesome quality product and very easy to install! 1/2 the size of my old onboard charger...Read more
...well but the cords were short for use in a boat and you need to BOLT on any extensions or you will void the warranty and the 2 little screws they...Read more
12 customers mention charging speed, 10 positive, 2 negative
The battery charger charges fast and optimizes the charging process. Customers find it quick and note that it charges batteries overnight, with batteries charging fully.
...4 of my buddies have bought the same charger. Charges fast. Cables are long enough to run to the bow of the boat.Read more
...able to install this with no problems and was impressed with how quick it charges.Read more
No recharge on the run....Read more
11 customers mention charging capability, 11 positive, 0 negative
The battery charger effectively charges various types of batteries, including lithium and lead acid batteries. Customers find it powerful enough to charge multiple batteries simultaneously, with some noting it can charge up to four batteries at once.
...in my boat so only needing one charger is great, also it can charge lithium batteries, interesting Minn kota just announced they have one, assuming...Read more
I love that this charger. It will charge many types of batteries including lithium batteries....Read more
The charger is small enough but powerful enough to charge all four batteries. 4 of my buddies have bought the same charger. Charges fast....Read more
7 customers mention versatility, 7 positive, 0 negative
The battery charger offers versatility and can charge different kinds of batteries. Customers find it great for all kinds of batteries and suitable for a variety of applications. It functions as a 4 bank battery charger.
...you can manually choose to charge different types of batteries from wet cells to AGM and Lithium wich makes it a very versatile chargerRead more
Versatile Battery Charger...Read more
6 customers mention battery life, 3 positive, 3 negative
Customers have mixed experiences with the battery charger's performance. Some find it gives batteries more life and ensures longevity, while others report it doesn't last long. Several users experienced issues where the charger got over 180 degrees and eventually stopped charging, with some units failing after 16 months of use.
6 customers mention size, 4 positive, 2 negative
Customers have mixed opinions about the battery charger's size. Some find the overall size perfect and appreciate the compact design, while others consider it big. The charger is described as small enough by some users.
The charger is small enough but powerful enough to charge all four batteries. 4 of my buddies have bought the same charger. Charges fast....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

  • Daniel
    5.0 out of 5 stars C’est de qualité
    Reviewed in Canada on December 27, 2025
    Verified Purchase
    Pas d’inquiétude avec cette achat.
    Très performant
    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
  • 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
  • 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
  • Bill Nicolson
    4.0 out of 5 stars seems decent
    Reviewed in Canada on July 23, 2021
    Verified Purchase
    I have only just started using the charger as a charger it works well but the cords were short for use in a boat and you need to BOLT on any extensions or you will void the warranty and the 2 little screws they give you are pretty useless as its a rather heavy unit for a battery charger, they did have a good chat response on thier website, yes I would recommend it with the same concerns mentioned above, I have 4 batteries in my boat so only needing one charger is great, also it can charge lithium batteries, interesting Minn kota just announced they have one, assuming you can even get one as most of thier items are out of stock
    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
  • 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

Translate all reviews to English
  • Cliente de 鶹
    5.0 out of 5 stars Excelente desempeño
    Reviewed in Mexico on May 31, 2024
    Verified Purchase
    Lo compre nuevamente por su excelente desempeño
    Report
  • Stephen C
    5.0 out of 5 stars Great for all kinds of batteries.
    Reviewed in the United States on January 12, 2026
    Verified Purchase
    I recently installed the NOCO Genius GENPRO10X4 onboard battery charger during my boat remodel, and it has been a game changer! This 4-bank charger delivers a remarkable 40A output, with 10A per bank, making it perfect for managing multiple batteries efficiently.
    The installation process was straightforward, thanks to its compact design and well-thought-out layout. The user-friendly interface and LED indicators make it easy to monitor the charging status at a glance. I appreciate the safety features, including spark-proof technology and reverse polarity protection, which give me peace of mind while operating.
    Performance-wise, this charger is outstanding. It features advanced charging technology that optimizes the charging process, ensuring my batteries are maintained at peak condition without overcharging. Whether I’m using lead-acid or lithium batteries, it handles them with ease and ensures longevity.
    Another highlight is its versatility. The GENPRO10X4 is suitable for a variety of applications, and I love how it seamlessly integrates into my boat’s existing electrical system. Additionally, the weatherproof design means I don’t have to worry about harsh marine conditions impacting its functionality.
    Report
  • Jack B.
    2.0 out of 5 stars Decepcionante
    Reviewed in Mexico on September 28, 2025
    Verified Purchase
    Decepcionante. Este cargador de 12 V tiene 4 salidas. Una o dos veces al día tengo que reiniciar una o dos salidas, o desconectar y volver a conectar el cargador. Se quedan inutilizables y no cargan las baterías. A veces, el estado indica un error. Otras veces, simplemente indica que las baterías están cargadas cuando no es así. Se dice que se puede dejar activado el modo de carga de las baterías y que mantendrá la carga. No lo hace sin intervención manual diaria.
    Report
  • Troy
    5.0 out of 5 stars Excellent charger
    Reviewed in the United States on December 8, 2025
    Verified Purchase
    Easy install and operation. Fast charge
    Report
  • Adam Smith
    5.0 out of 5 stars Awesome charger
    Reviewed in the United States on January 17, 2026
    Verified Purchase
    Works great. Im running two agm, lithium and regular lead acid.
    Report
See more reviews

Product Summary: 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

From NOCO

4.6 out of 5 stars, 1,047 ratings

Customer reviews

50+ viewed in past week

Price

No featured offers available

Other sellers

Other sellers

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.

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.
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