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NOCO GENIUS2D, 2A Direct-Mount Onboard Car Battery Charger, 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Marine, ATV, Truck and Deep Cycle Batteries

4.7 4.7 out of 5 stars 7,725 ratings

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Brand NOCO
Color Black
Product Dimensions 3.47"D x 3.43"W x 6.5"H
Item Weight 0.73 Pounds
Specification Met CEC, UL, FCC

About this item

  • Meet the GENIUS2D - A direct-mount onboard battery charger for an under-the-hood battery charging. It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator.
  • Do more with Genius - Designed for 12-volt sealed lead-acid automotive, marine, RV, and deep-cycle batteries, including flooded, gel, AGM, SLA, VRLA and maintenance-free batteries.
  • Direct Mount - Securely mounts nearby the battery with its rugged snap-fit mounting bracket and effortlessly installs into most materials with truss-head self-tapping screws.
  • Enjoy precision charging - An integrated digital thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charge dead batteries - Charge batteries as low as 1-volt, including flooded, gel, and AGM, as well as automotive, marine, and deep-cycle batteries.
  • Beyond maintenance - It's not just a battery trickle charger, it's an advanced battery charger maintainer. A fully-automatic, worry-free smart battery charger for everyday use - 24/7 - with zero overcharge.
  • Restore your battery - An advanced battery repair mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • Compatible with all types of gas and diesel vehicles - Add a permanent onboard battery charger to any vehicle to make battery maintenance simple and easy. Plus, combine with any of the GCP Series AC Port Plugs for remote charging access.
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$39.95
Get it as soon as Wednesday, Mar 20
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NOCO GENIUS2D, 2A Direct-Mount Onboard Car Battery Charger, 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Marine, ATV, Truck and Deep Cycle Batteries
NOCO GENIUS2D, 2A Direct-Mount Onboard Car Battery Charger, 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Marine, ATV, Truck and Deep Cycle Batteries
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Price$39.95-13% $49.99
List:$57.48
-29% $799.44
List:$1,125.95
$24.99$119.95-20% $62.90
List:$78.85
Delivery
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Customer Ratings
Easy to use
4.6
4.7
4.0
4.2
3.9
4.4
Value for money
4.3
4.6
3.8
3.8
4.2
Easy to read
4.7
4.8
4.3
Weatherproof
4.6
4.0
3.5
Sold By
Amazon.com
HULKMAN Direct
Amazon.com
BliloDirect
TowerTop-US
NEXPEAK CHARGER
input voltage
120 volts
12 volts
120 volts
220 volts
120 volts of alternating current
110 volts of alternating current
battery charge time
40 hours
10 hours
24 hours
specification met
UL, CEC, FCC
UL, CEC, FCC
ETL, FCC, BC
weight
0.73 pounds
856 grams
12.1 pounds
1.2 pounds
5.05 pounds
0.87 kilograms

Important information

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Top Brand: NOCO

Highly Rated
4.7/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
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From the brand


From the manufacturer

car battery charger 12v 6v automotive trickle maintainer auto onboard marine automobile 12 volt agm
car battery charger 12v 6v automotive trickle maintainer generator pulse reconditioner rapid sealed

SECURE BRACKET.

Use a drill to secure the mounting bracket using self-tapping screws (included).

car battery charger 12v 6v automotive trickle maintainer lead acid sla commercial onboard agm

ATTACH STRAP.

Loop the velcro mounting strap into the mounting bracket.

car battery charger 12v 6v automotive trickle maintainer jet ski desulfating lawn tractor engine

MOUNT GENIUS2D.

Clip the GENIUS2D battery charger into the mounting bracket.

car battery charger 12v 6v automotive trickle maintainer wheeled wheels desulfation universal rv

FASTEN STRAP.

Fasten the GENIUS2D battery charger using the velcro mounting strap.

2a car battery charger 12v 6v automotive trickle maintainer auto automotive agm onboard marine

GENIUS2D

1a car battery charger 12v 6v automotive trickle maintainer auto automotive lithium agm lifepo4

GENIUS1

2a car battery charger 12v 6v automotive trickle maintainer auto automotive lithium agm lifepo4

GENIUS2

5a car battery charger 12v 6v automotive trickle maintainer auto automotive lithium agm lifepo4

GENIUS5

10a car battery charger 12v 6v automotive trickle maintainer auto automotive lithium agm lifepo4

GENIUS10

Customer Reviews
4.7 out of 5 stars
7,725
4.5 out of 5 stars
48,009
4.6 out of 5 stars
14,468
4.6 out of 5 stars
16,724
4.6 out of 5 stars
16,518
Charging Current
2 Amps 1 Amp 2 Amps 5 Amps 10 Amps
Battery Capacity
40Ah 30Ah 40Ah 120Ah 230Ah
Output Power
28W 15W 30W 75W 150W
12V Repair Mode
12V Supply Mode
6V AGM Mode

Product Description

Meet the GENIUS2D, one of our most powerful, highest-performing, energy-efficient, and compact onboard universal battery chargers yet. The GENIUS2D is a 2-amp (28-watt) - 100-240VAC 50-60Hz - 12-volt heavy-duty battery charger, battery maintainer, trickle charger, float charger, and battery desulfator for up to 40 amp-hours. It's designed to charge and maintain all types of sealed lead-acid batteries, including flooded, gel, maintenance-free, AGM, SLA, VRLA, as well as automotive, marine, RV, powersports, and deep-cycle batteries. Its advanced battery repair regenerator mode uses slow pulse reconditioner technology to automatically detect battery sulfation and acid stratification, restoring lost battery performance for extended battery life. It can be mounted almost anywhere - under the hood, engine compartments, garage - to charge and maintain any battery. Its next-generation charging regime utilizes fast charging microprocessor technology to rapidly recharge batteries without any manual intervention. It's a completely automatic, worry-free, professional, and commercial-grade intelligent battery charger with zero overcharge. Designed to be dual purpose - both indoors and outdoors - providing weatherproof and waterproof protection from the outside elements during any time of the year, including winter. A digital display provides the charging status and tests diagnostics for multiple conditions such as a dead battery, bad battery, reverse polarity, and more. It comes with a 24-inch AC cable and a 24-inch DC cable with 3/8-inch eyelet terminals designed to be securely mounted near your battery. And it's compatible with all types of gas and diesel vehicles, including cars, automobiles, lawn mowers, ATVs, UTVs, lawn tractors, trailers, trucks, SUVs, boats, campers, RVs, jet skis, PWCs, wave runners, snowmobiles, 4-wheelers, generators, golf carts, classic cars, including BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, VW, Audi, Ford, Chevrolet, Corvette, Cadillac, Jeep, Prius, Toyota, Subaru, Nissan, Honda, Polaris, Seadoo, John Deere and more.

En español (ES): Conozca el GENIUS2D, uno de nuestros cargadores de batería universales a bordo más potentes, de mayor rendimiento, de bajo consumo y compactos hasta el momento. El GENIUS2D es un cargador de batería de servicio pesado de 2 amperios (28 vatios) - 100-240 VCA 50-60 Hz - 12 voltios, mantenedor de batería, cargador lento, cargador flotante y desulfatador de batería de hasta 40 amperios-hora. Está diseñado para cargar y mantener todo tipo de baterías selladas de plomo-ácido, incluidas las inundadas, de gel, sin mantenimiento, AGM, SLA, VRLA, así como baterías automotrices, marinas, de vehículos recreativos, de deportes motorizados y de ciclo profundo. Su modo regenerador de reparación de batería avanzado utiliza tecnología de reacondicionamiento de pulso lento para detectar automáticamente la sulfatación de la batería y la estratificación ácida, restaurando el rendimiento perdido de la batería para prolongar la vida útil de la batería. Se puede montar en casi cualquier lugar, debajo del capó, en los compartimentos del motor, en el garaje, para cargar y mantener cualquier batería. Su régimen de carga de próxima generación utiliza tecnología de microprocesador de carga rápida para recargar rápidamente las baterías sin ninguna intervención manual. Es un cargador de batería inteligente completamente automático, sin preocupaciones, profesional y de grado comercial sin sobrecarga. Diseñado para ser de doble propósito, tanto en interiores como en exteriores, brindando protección impermeable y resistente a la intemperie contra los elementos externos durante cualquier época del año, incluido el invierno. Una pantalla digital proporciona el estado de carga y prueba los diagnósticos para múltiples condiciones, como batería agotada, batería defectuosa, polaridad inversa y más. Viene con un cable de CA de 24 pulgadas y un cable de CC de 24 pulgadas con terminales de ojal de 3/8 de pulgada diseñados para montarse de manera segura cerca de la batería. Y es compatible con todo tipo de vehículos a gasolina y diésel, incluidos automóviles, automóviles, cortadoras de césped, vehículos todo terreno, UTV, tractores de césped, remolques, camiones, vehículos deportivos utilitarios (SUV), botes, casas rodantes, casas rodantes, motos acuáticas, motos acuáticas, motos acuáticas, motos de nieve, 4 -ruedas, generadores, carritos de golf, autos clásicos, incluidos BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, VW, Audi, Ford, Chevrolet, Corvette, Cadillac, Jeep, Prius, Toyota, Subaru, Nissan, Honda, Polaris, Seadoo, John Deere y más.

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Additional Information

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NOCO GENIUS2D, 2A Direct-Mount Onboard Car Battery Charger, 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Marine, ATV, Truck and Deep Cycle Batteries


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What's in the box

  • GENIUS2D 2A Direct-Mount Smart Battery Charger and Battery Maintainer With Integrated Eyelet Terminals
  • Battery Charger User Guide
  • 3-Year Limited Warranty
  • Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    7,725 global ratings

    Customers say

    Customers like the quality, ease of installation, and performance of the battery charger. They mention that the cables are decent quality, and the screws are self tapping. They are also happy with size, performance, and battery charging. That said, some complain about the lighting. Opinions are mixed on value, and charging.

    AI-generated from the text of customer reviews

    307 customers mention248 positive59 negative

    Customers like the performance of the battery charger. They mention that it works well, is easy to install, and is highly recommended. Some mention that the mounting screw provided drilled bigger hole.

    "...This unit is compact, easy to install, and does what it says it does. When you are ready to drive away, just unplug your extension cord and go...." Read more

    "...Works flawlessly." Read more

    "Easy install, small fits in my tight engine compartment okay and works extremely well...." Read more

    "...As for the actual charging and maintenance functions, these seem to work quite well...." Read more

    205 customers mention189 positive16 negative

    Customers find the installation process of the battery charger to be easy. They mention that it hooks up and stays with the vehicle. They also like the cost and ease of use. The unit snaps into the supplied bracket pretty well, and it installs under the hood, which provides protection from the weather.

    "...This unit is compact, easy to install, and does what it says it does. When you are ready to drive away, just unplug your extension cord and go...." Read more

    "...Installation was easy and my battery is charged and ready to go in the morning. Works flawlessly." Read more

    "Easy install, small fits in my tight engine compartment okay and works extremely well...." Read more

    "...The comprehensive user manual and straightforward instructions simplify the process, allowing users to set up and start benefiting from the GENIUS2D..." Read more

    198 customers mention140 positive58 negative

    Customers like the battery charging of the product. They mention that it keeps their vehicles' batteries charged up, with no issues. They say it's easy to install and works well to keep the battery fully charged. Some say it provides exactly what the battery needs to keep it maintained to start.

    "...Installation was easy and my battery is charged and ready to go in the morning. Works flawlessly." Read more

    "...The investment in this onboard charger pays off in the form of prolonged battery life, reduced maintenance costs, and the convenience of having a..." Read more

    "...This is in my daily driver too, just goes to show how alternators do not keep batteries healthy on their own." Read more

    "...my lead acid battery and has been working reliably and properly maintaining the 12V battery in my vintage car for several years...." Read more

    94 customers mention87 positive7 negative

    Customers like the size of the battery charger. They say it is compact, easy to use, and stays concealed. Customers also like that the unit is not heavy and can be easily mounted on a car or boat.

    "...This unit is compact, easy to install, and does what it says it does. When you are ready to drive away, just unplug your extension cord and go...." Read more

    "Easy install, small fits in my tight engine compartment okay and works extremely well...." Read more

    "...The sleek and compact form factor reflects the advanced technology packed into this charger...." Read more

    "Nice unit! Appears well built, quality packaging nice size...." Read more

    90 customers mention78 positive12 negative

    Customers like the quality of the battery charger. They say it's well-made, durable, and easy to mount on a car or boat. Customers also like that the cables are decent quality and the self-tapping screws are easy to use. They like that it' s a smart investment in the longevity and reliability of their vehicle.

    "...Unit looks cleanly made and well-built. Other units by same maker allow more options for other applications." Read more

    "...Now it lasts about 30 minutes. This also translates to holding up much better when sitting over time...." Read more

    "...The GENIUS2D is not just a charger; it's a smart investment in the longevity and reliability of your batteries...." Read more

    "...Now when I go out to use it, it starts right up! Very happy with this purchase." Read more

    99 customers mention65 positive34 negative

    Customers have mixed opinions about the charging of the battery charger. Some mention that it charges flawlessly, it's easy to install, and it has a 2A maximum charge rate. Others say that it wouldn't charge the two batteries in their F350 if they were dead, and that it takes a lot of time to charge.

    "...Its direct-mount design, intelligent charging technology, and comprehensive features make it a top choice for anyone looking to optimize battery..." Read more

    "...Charging seems to be working, right off the bat it detected the batteries as less than 75% and took 10-12 hours to be in “optimized charging/full”...." Read more

    "...It's only a 2A maximum charge rate (it lowers twice in later stages of the charge process) so not well suited to large batteries such as those of a..." Read more

    "...One charger maintains both batteries. Easy to mount too." Read more

    71 customers mention46 positive25 negative

    Customers are mixed about the value of the battery charger. Some mention that it's worth the price and will save them money quickly, while others say that the value for money is loose.

    "Easy to install, good value for price. Seems to work well." Read more

    "Liked the cost and ease of use. Fewer prompts than expected but worth the price. Only used to date on my lawn tractor. Charged within 24 hours...." Read more

    "...Drilled into side panel of fender. Think a bit pricey for a small trickle charger." Read more

    "Charged a half dead battery for my camper. Saved me hundreds of dollars. Charge it during the winter and it’s ready to go when I need it" Read more

    34 customers mention3 positive31 negative

    Customers are dissatisfied with the lighting of the battery charger. They mention that the red blinking light would always show, and the front indicator would not light. Some customers also mention that there is no temperature indicator, and that the indicator lights are vague.

    "...I unplug waited a few seconds then re-plugged it back in. The red light started flashing (not the green light). I waited for about 2 hrs and recheck...." Read more

    "...It doesn't work, fuse is good, 120 in 0v out. No lights etc. So I go to warranty it...." Read more

    "...I didn't like was that, when I went to disconnect it, the thing was flashing a red light. I'm thinking "now what the heck does that mean?"..." Read more

    "...The LED indicator is weak and not bright enough. I would prefer to see a more predominant indication of the status...." Read more

    Easy to Install, Brought 'Low' Battery to 'Good'
    5 Stars
    Easy to Install, Brought 'Low' Battery to 'Good'
    I was skeptical to try this. After replacing a $230+ battery I bought a battery/alternator tester. Tests passed in my main vehicle with the new battery. I moved over to my spouse's vehicle and the battery I replaced 2-3 years ago was already showing low health.I bought the Noco battery cleaner and protector spray local for much cheaper than they were priced on Amazon. I cleaned the batteries and installed these maintainers (I bought one for each vehicle).The Genius maintainers took over 12 hours for each of my 65ah batteries. These 2 amp models work fine for us because we can charge overnight on weekends. I ran tests on my spouse's vehicle and now the battery is showing in 'Good' health.With all the outlets and accessories in my main vehicle it's nice to know that I can plug in and charge to get my battery an extra boost since I doubt it charges enough during driving to maintain full capacity.You may need to pick up some galvanized washers to use on your battery posts/clamps in case you have other accessories attached or need a better fit. Make sure to plot the layout of the Genius maintainer before committing to the install. I tried to keep mine away from high heat sources and route the plug and cables out of the way and where I can easily get to them for charging.
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    Top reviews from the United States

    Reviewed in the United States on March 9, 2024
    Reviewed in the United States on February 10, 2024
    One person found this helpful
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    Reviewed in the United States on December 25, 2023
    3 people found this helpful
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    Reviewed in the United States on December 30, 2022
    13 people found this helpful
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    Reviewed in the United States on November 18, 2023
    7 people found this helpful
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    Reviewed in the United States on February 20, 2024
    One person found this helpful
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    Reviewed in the United States on February 10, 2024
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    Top reviews from other countries

    Translate all reviews to English
    MJ
    5.0 out of 5 stars Excelente aparato!
    Reviewed in Mexico on February 8, 2024
    Jami Taschuk
    5.0 out of 5 stars Keeps my batter full power for cold Canadian winters.
    Reviewed in Canada on July 3, 2023
    20 people found this helpful
    Report
    Amazon Customer
    5.0 out of 5 stars Good Battery Maintainer.
    Reviewed in Canada on February 7, 2024
    Manuel R.
    5.0 out of 5 stars Nunca funcionó, en lugar de cargar la batería la descargaba
    Reviewed in Mexico on October 21, 2022
    One person found this helpful
    Report
    Alex
    5.0 out of 5 stars Actually does what it states
    Reviewed in Canada on January 11, 2024