Manufacturer | NOCO |
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Place of Business | KITCHENER, ON, N2G 4J1 CA |
Brand | NOCO |
Model | GENIUS2 |
Product Dimensions | 4.32 x 6.1 x 9.4 cm; 557.92 g |
Item model number | GENIUS2 |
Is discontinued by manufacturer | No |
Exterior | Machined |
Manufacturer part number | GENIUS2 |
Special features | Spark-Proof and Reverse Polarity Protection, Force Mode For Manual Battery Charging, Battery Maintainer, Trickle Charger And Battery Desulfator, Battery Charger For Cars, Motorcycles, ATV, And Lawnmowers, Temperature Compensation For Accurate Recharging, IP65 Ingress Protection |
Item Weight | 558 g |
Country of origin | USA |
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NOCO GENIUS2: 2A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries
Purchase options and add-ons
Brand | NOCO |
Colour | Black |
Product Dimensions | 10.8D x 8.7W x 17.7H Centimetres |
Item weight | 558 g |
Output voltage | 12 Volts |
Specification met | CSA, UL, FCC |
Input voltage | 120 Volts |
Charging time | 40 Hours |
Current rating | 2 Amps |
EU Spare Part Availability Duration | 3 Years |
About this item
- MEET THE GENIUS2 — Similar to our G1100, just better. It's 30% smaller and delivers over 140% more power. It's the all-in-one charging solution - battery charger, battery maintainer, trickle charger, plus desulfator.
- DO MORE WITH GENIUS — Designed for 6-volt and 12-volt lead-acid (AGM, Gel, SLA, VRLA) and lithium-ion (LiFePO4) batteries, including flooded, maintenance-free, deep-cycle, marine and powersport batteries.
- ENJOY PRECISION CHARGING — An integrated thermal sensor dynamically adjusts the charge based on ambient temperature, preventing overcharging in hot weather and undercharging in cold, ensuring optimal battery performance.
- CHARGE DEAD BATTERIES — Charge batteries from as low as 1 volt, or use Force Mode to manually charge completely dead batteries down to zero volts. Perfect for recovering deeply discharged or neglected batteries.
- BEYOND MAINTENANCE — Keep your battery fully charged without worrying about overcharging. Our smart charger constantly monitors the battery, allowing you to leave it connected safely - indefinitely - for worry-free maintenance.
- RESTORE YOUR BATTERY — Precision pulse charging automatically detects and reverses battery sulfation and acid stratification, restoring your battery's health for improved performance and extended lifespan.
- COMPATIBLE — Charges and maintains all types of vehicles, including cars, automobiles, motorcycles, mopeds, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, PWCs, jet skis, classic cars, and more.
- WHAT'S IN THE BOX — Includes a 2A charger, 72-inch AC cable, 80-inch DC cable with battery clamps, and integrated eyelet terminals, mounting bracket, screws, and a 3-year warranty. Proudly designed in the USA.
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Top Brand: NOCO
From the brand

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Shop Jump Starters
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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.
From the manufacturer

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Customer Reviews
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4.6 out of 5 stars 16,537
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4.6 out of 5 stars 54,212
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4.6 out of 5 stars 18,481
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4.6 out of 5 stars 18,439
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Charging Current
| 2 Amps | 1 Amp | 5 Amps | 10 Amps |
Battery Capacity
| 40Ah | 30Ah | 120Ah | 230Ah |
Output Power
| 30W | 15W | 75W | 150W |
12V Repair Mode
| ✘ | ✘ | ✔ | ✔ |
12V Supply Mode
| ✘ | ✘ | ✘ | ✔ |
6V AGM Mode
| ✘ | ✘ | ✘ | ✔ |
Product description
The GENIUS2 is the ultimate all-in-one solution for battery charging, maintenance, and restoration, delivering 30% more power in a 140% smaller design compared to its predecessor, the G1100. Designed for 6-volt and 12-volt lead-acid (AGM, gel, flooded, and deep-cycle) and lithium-ion (LiFePO4) batteries (up to 40 amp-hours), it is compatible with a vast array of vehicles, such as cars, automobiles, motorcycles, dirt bikes, scooters, mopeds, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, PWCs, jet skis, snowmobiles, golf carts, classic cars,and more; including automotive brands like BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, Audi, Ford, Chevrolet, Corvette, Cadillac, Prius, Toyota, Subaru, Nissan, powersport vehicles such as Harley-Davidson, Honda, Yamaha, Kawasaki, Ducati, Indian, KTM, Husqvarna, Vespa, Polaris, Seadoo, as well as lawn and garden vehicles such as John Deere, Kubota, Toro and more. Featuring an integrated thermal sensor, the GENIUS2 adjusts its charging profile based on ambient temperature, ensuring optimal performance by eliminating the risk of overcharging in hot climates and undercharging in cold ones. It's capable of charging batteries as low as 1 volt and offers a Force Mode for manually charging completely dead batteries (as low as zero volts). With precision pulse charging, the GENIUS2 restores battery health by reversing sulfation and acid stratification, improving performance and extending battery life. Its advanced monitoring system allows for safe, indefinite connection, making it perfect for long-term maintenance. The package includes a 2A charger (120-240VAC), 72-inch AC cable, 80-inch DC cable with battery clamps, and integrated eyelet terminals, mounting bracket and screws, all backed by a three-year warranty. Proudly designed in the USA, the GENIUS2 combines power, reliability, and convenience in a compact design to keep your batteries ready for whatever lies ahead.
Product information
Technical Details
Additional Information
ASIN | B07W6B987F |
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Customer Reviews |
4.6 out of 5 stars |
鶹 Rank |
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Date First Available | Nov. 19 2019 |
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This Item ![]() NOCO GENIUS2: 2A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries | Recommendations | |||||
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Price | $74.97$74.97 | $28.11$28.11 | $89.99$89.99 | -5%$33.62$33.62 Was: $35.39 | -40%$41.99$41.99 Was: $69.99 | $94.00$94.00 |
Delivery | Get it by Saturday, Jul 26 | Get it by Saturday, Jul 26 | Get it by Saturday, Jul 26 | Get it by Saturday, Jul 26 | Get it by Saturday, Jul 26 | Get it by Saturday, Jul 26 |
Customer ratings | ||||||
Sold by | 鶹.ca | HARPIMER Canada | Deltran Canada | Haibro® Store-Ca | Yantuo | Project Clicks |
output voltage | 12 volts | 12 volts | 12 volts | 24 volts of direct current | 12 volts of direct current | 12 volts |
input voltage | 120 volts | 240 volts | 12 volts | 110 volts of alternating current | — | 240 volts |
specification met | UL, FCC, CSA | — | — | CE ROHS FCC | — | CE |
Customer reviews
Customers say
Customers like the functionality, charging speed, and quality of the battery charger. They mention it works great on all their 12V batteries, selects the correct charging rate, and is easy to connect. Customers also appreciate the compact size, design, and battery compatibility.
AI Generated from the text of customer reviews
Customers like the functionality of the battery charger. They mention it works great on all their 12V batteries and is a tiny little unit with flexible attachment options.
"Works great and small in size" Read more
"works great" Read more
"Works well!" Read more
"Works as advertised. Did some homework and this is the battery maintainer to buy. Hook it up and forget it. Wish I had bought it sooner." Read more
Customers like the charging speed of the battery charger. They mention it quickly charges and maintains car, motorcycle, and lawn equipment batteries. Some say it selects the correct charging rate to top-up the battery. They also say it triple charges their other vehicle batteries.
"Great little charger , maintainer. Covers a wide range of battery types and conditions them as well...." Read more
"Fast and oem" Read more
"small take longer to charge good lights nice to see green light when battery is good" Read more
"Great charger..." Read more
Customers are satisfied with the quality of the battery charger. They mention it's a great little unit and reliable.
"Great product made in america" Read more
"Excellent product. Great price point would buy again" Read more
"...Just make sure it’s charged up. Good product." Read more
"Easy to use ! Good quality !" Read more
Customers find the battery charger easy to use. They mention the instructions are clear and straightforward, ensuring a hassle-free experience. They also say it's easy to connect and works seamlessly without any tinkering. Customers also appreciate the leads that can be disconnected quickly without disturbing the charger.
"As expected. Easy to use and reputable company. Would buy again." Read more
"...Like I said, this charger is easy to use, cost effective and most importantly, it works! I STRONGLY RECOMMEND." Read more
"Very easy to use; lights on recharger are easy to understand. Gave me a chance to clean off battery connectors when removing cables...." Read more
"...This little trickle charger is perfect. It is very easy to use and you don't have to worry about overcharging so you can leave it hooked up for days..." Read more
Customers like the battery life of the product. They mention it keeps their batteries charged and maintained at -30 degrees Celsius. They say it's perfect for maintaining batteries year-round and a lifesaver when their car battery is dead. Customers also say it shuts off when the battery is full and turns on when it's depleted.
"Great battery maintainer..." Read more
"...Its small size makes it portable, and it’s perfect for maintaining batteries year-round. A must-have for any vehicle owner!" Read more
"...charging rate to top-up the battery, then it keeps the battery maintained for the duration. I like it very much." Read more
"Works great, my battery was dead and boosting it with an external battery would not get it to start...." Read more
Customers like the compact size of the battery charger. They mention it's small enough to keep permanently under the hood with provided clips.
"...Noco Pros: compact, lights are very bright easy to read, simple system to use, trust the technology. Not afraid to leave it on indefinitely." Read more
"Small and fast" Read more
"This charger worked great at a reasonable price. The unit is nice and small as well and easy to store" Read more
"Compact and powerfull..." Read more
Customers like the design of the battery charger. They mention it's well-designed, looks great, and is a good product at glance. Customers also say it's a great gift for winterizing batteries.
"I like this charger, it's nice and small and the clamps have plastic on them so you won't accidently touch them together when you take it off a..." Read more
"This charger worked great at a reasonable price. The unit is nice and small as well and easy to store" Read more
"Bought this based on rep, on sale and its a really awesome unit! Well built, nice quality cables, and charges smart which was a bonus...." Read more
"...and I have charged quite a few batteries to full charge and really appreciate the design and indicators for this device...." Read more
Customers like the battery compatibility of the product. They mention it works on a variety of batteries, including motorcycle, bicycle, and lifepo4 batteries. Customers also say it's ideal to keep their batteries in shape, especially when the car is inactive for more time.
"...The Noco charger is the next best thing to keep the battery in tip-top shape and since my SUV is in the garage at all times, it's a well sheltered..." Read more
"...up to 40ah batteries, has a lithium mod that says it is compatible with lifepo4 batteries as long as they have a bms, it struggles to charge the..." Read more
"...Radio CBA V battery analyser and this thing work like a charm to test all kind of batteries...." Read more
"...So for less than a dime per day, this thing will keep your battery in tip-top shape!..." Read more
Reviews with images

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Top reviews from Canada
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- Reviewed in Canada on June 15, 2025Verified PurchaseGreat tiny little unit with flexible attachment options. This is a peace of mind purchase and a no brainer. I use it primarily to maintain a motorcycle battery which it does quickly and without any tinkering.
Even includes a handy little mount with strap
Great tiny little unit with flexible attachment options. This is a peace of mind purchase and a no brainer. I use it primarily to maintain a motorcycle battery which it does quickly and without any tinkering.
Even includes a handy little mount with strap
Images in this review
- Reviewed in Canada on June 23, 2025Verified PurchaseHad previously bought cheap versions of these and they did not last and I believe fried a couple batteries! Not worth saving 20.00 on a charger and then having it destroy a 300.00 battery!
Noco Pros: compact, lights are very bright easy to read, simple system to use, trust the technology. Not afraid to leave it on indefinitely.
- Reviewed in Canada on July 5, 2025Verified PurchaseWorks great and small in size
- Reviewed in Canada on August 2, 2023Verified PurchaseI had a Noco battery product years ago. Not impressive. The company seems to have picked up its game. This thing is simple, and seems reliable, at a good price point. NOTE: I do not trust "leave it on charge all winter and it will work automatically". Not for ANY of these chargers. I charge my batteries up. Then uncouple the tender, then recharge in a few weeks. This avoids having to trust little micro circuits somewhere in a black box - that may of may not work flawlessly month after month without checking.
- Reviewed in Canada on October 4, 2024Verified PurchaseThe NOCO GENIUS2 2A Car Battery Charger is a reliable, compact, and easy-to-use charger for both 6V and 12V batteries. It quickly charges and maintains car, motorcycle, and lawn equipment batteries with precision. The smart charging technology ensures safety, protecting against overcharging and short circuits. Its small size makes it portable, and it’s perfect for maintaining batteries year-round. A must-have for any vehicle owner!
- Reviewed in Canada on May 6, 2025Verified PurchaseThis charger worked great at a reasonable price. The unit is nice and small as well and easy to store
- Reviewed in Canada on April 27, 2024Verified PurchaseThis device is impressive. It is small, light weight, and it works very well. I use it to keep my boat batteries ready to go while my boat is in winter storage. It works just as advertised. It senses the condition of the battery, it selects the correct charging rate to top-up the battery, then it keeps the battery maintained for the duration. I like it very much.
- Reviewed in Canada on June 9, 2025Verified PurchaseWorks great
Top reviews from other countries
- David PerezReviewed in the United States on April 22, 2025
5.0 out of 5 stars Highly recommended for old batteries.
Verified PurchaseI would go through the problem of not having to use my car for long periods of time which would ultimately drain my battery. I would suffer through by using a portable jumper, but the problematic battery would persist. I started investigating in alternatives like unplugging the battery from the car while it is not in use, but I would still have to get a new battery regardless. I luckily stumbled into this product that changed the game entirely.
My battery was absolutely drained and would not even crank the starter motor. I got this product and set it up using the instructions and it charged up right away. It was very practical to use with ease. All that is needed is to latch on to the terminals in the appropriate order, plug it in, and in the push of a button it revives the battery. I was able to recharge my battery back to 100% over time and it starts without a hitch. I would just leave my battery connected to this product and check up on it every once in a while. Very simple, very effective. Highly recommended.
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AMASReviewed in Saudi Arabia on September 7, 2022
5.0 out of 5 stars نوكو غني عن التعريف
Verified Purchaseانصح بها
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okar LBReviewed in Mexico on February 10, 2021
5.0 out of 5 stars Excelente cargador muy versátil
Verified PurchaseHay mucho que considerar al cargar una batería de auto, éste cargador es ideal para varios escenarios. Lo compré pues muchos autos nuevos con baterías AGM no deben ser cargados con un cargador que no diga expresamente ser para AGM, de otra forma puede acortar su vida.
Este cargador puede usarse con baterías regulares de plomo-acido, AGM, litio y hasta de 6V. Tiene indicadores para polaridad invertida, batería dañada, además de nivel de carga en 4 niveles. En ésta versión de 2 amperes (Noco Genius 2) una batería que marque el primer nivel puede tomar mas de un día en cargar, pero lo hará extendiendo lo mas posible la vida de la misma.
Para autos que no se utilizan mucho, es indispensable un cargador como éste, de lo contrario la batería se puede dañar por la falta de carga, así se arranque el motor cada mes, pues no es suficiente, particularmente para las de plomo-acido. Incluso autos que solo se usan para trayectos cortos dos o tres veces por semana, la carga que obtienen no es suficiente y terminan descargandose y dañandose si no se hace algo al respecto.
Por el tipo de carga que generan éstos cargadores, se pueden recuperar hasta cierto punto baterías que ya fueron indebidamente descargadas mas allá de lo recomendado. Las AGM son las que pueden resistir mas, una de plomo tal vez no se recupere al 100% pero se puede extender un poco su vida. El hecho de que cargue lentamente es precisamente para extender la vida de las baterías y mantener cargadas las que no se usan. Si requieres un arrancador o una carga rápida, ésto no es el producto que necesitas. Las cargas rápidas terminan disminuyendo la vida útil de cualquier batería.
Es un producto excelente para museos y colecciones de autos, garantizando que autos sin mucho uso estén siempre listos y que las baterías no pierdan su vida útil. Se puede comprar el accesorio para conectar permanentemente a la batería y dejar el conector tapado pero accesible para rotar el mismo cargador entre varios autos, dejandolo un par de días en cada auto.
Yo lo compré para un auto que casi no uso y como tiene batería AGM, no podía usar mi cargador/mantenedor viejo. Lo recomiendo bastante, luego de una carga se puede desconectar y permanecer meses sin usar y arranca a la primera, aunque lo ideal es dejarlo siempre conectado si es posible. Cuando ya está cargada, se mantiene en modo de espera.
okar LBExcelente cargador muy versátil
Reviewed in Mexico on February 10, 2021
Este cargador puede usarse con baterías regulares de plomo-acido, AGM, litio y hasta de 6V. Tiene indicadores para polaridad invertida, batería dañada, además de nivel de carga en 4 niveles. En ésta versión de 2 amperes (Noco Genius 2) una batería que marque el primer nivel puede tomar mas de un día en cargar, pero lo hará extendiendo lo mas posible la vida de la misma.
Para autos que no se utilizan mucho, es indispensable un cargador como éste, de lo contrario la batería se puede dañar por la falta de carga, así se arranque el motor cada mes, pues no es suficiente, particularmente para las de plomo-acido. Incluso autos que solo se usan para trayectos cortos dos o tres veces por semana, la carga que obtienen no es suficiente y terminan descargandose y dañandose si no se hace algo al respecto.
Por el tipo de carga que generan éstos cargadores, se pueden recuperar hasta cierto punto baterías que ya fueron indebidamente descargadas mas allá de lo recomendado. Las AGM son las que pueden resistir mas, una de plomo tal vez no se recupere al 100% pero se puede extender un poco su vida. El hecho de que cargue lentamente es precisamente para extender la vida de las baterías y mantener cargadas las que no se usan. Si requieres un arrancador o una carga rápida, ésto no es el producto que necesitas. Las cargas rápidas terminan disminuyendo la vida útil de cualquier batería.
Es un producto excelente para museos y colecciones de autos, garantizando que autos sin mucho uso estén siempre listos y que las baterías no pierdan su vida útil. Se puede comprar el accesorio para conectar permanentemente a la batería y dejar el conector tapado pero accesible para rotar el mismo cargador entre varios autos, dejandolo un par de días en cada auto.
Yo lo compré para un auto que casi no uso y como tiene batería AGM, no podía usar mi cargador/mantenedor viejo. Lo recomiendo bastante, luego de una carga se puede desconectar y permanecer meses sin usar y arranca a la primera, aunque lo ideal es dejarlo siempre conectado si es posible. Cuando ya está cargada, se mantiene en modo de espera.
Images in this review
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KarimReviewed in Mexico on June 17, 2025
5.0 out of 5 stars Buena opción y confiable.
Verified PurchaseBuena relación precio calidad, se siente robusto y no se calienta, muy útil para mantener baterías de autos parados en buen estado, normalmente no demora más de 4hrs en cargar una batería que ah estado una semana sin arrancar.