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NOCO - GENIUS2: 2A Smart Battery Charger – 6V/12V – Automatic Maintainer & Trickle Charger – For Lead-Acid & Lithium

Model: GENIUS2
SKU: 10409665
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About this product

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.

Features
  • 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.

See all features
Specifications
  • Brand
    NOCO
    Model Number
    GENIUS2
    Product Name
    NOCO GENIUS2: 2A Smart Battery Charger – 6V/12V – Automatic Maintainer & Trickle Charger – For Lead-Acid & Lithium
    Amperage
    2
    Voltage
    6V and 12V
    Compatible Battery Type
    Lead acid, Lithium-ion
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Reviews

Rating 4 out of 5 stars with 4 reviews

5 star rating. 3 reviews1 star rating. 1 review
75% would recommend to a friend

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Excellent charger

    The NOCO Genius 2 is an excellent compact smart charger and maintainer. It’s simple to use, works on both 6V and 12V batteries, and does a great job bringing weak batteries back to life. I like that it’s lightweight, easy to store, and has clear indicators for charging status. It’s also very safe with built-in spark-proof and reverse polarity protection. Perfect for cars, trucks, motorcycles, ATVs, and even lawnmowers. If you just need to maintain a battery during storage, this is a reliable option. For the size and price, it packs a lot of power and functionality. Highly recommend for anyone who wants peace of mind knowing their batteries will be ready to go.

    Posted by AlonsoD

  • Rated 5 out of 5 stars

    Great for my problematic car

    Does a great job at maintaining my cars battery that has a parasitic draw. Use it monthly, effortless

    Posted by ThomasR

  • Rated 1 out of 5 stars

    Don't waste your money like I did!

    This piece of junk was not cheap in price but it is cheap in quality. Like a very large number of buyers of this item on this and other internet stores, the one I bought stopped working on the first battery I hooked it up to maintain a charge. Now I read the return options and the seller, Cellntell Distribution Inc. will not accept a defective charger!!! What a ripoff!!!

    This review is from NOCO - GENIUS2: 2A Smart Battery Charger – 6V/12V – Automatic Maintainer & Trickle Charger – For Lead-Acid & Lithium

    Posted by ChristopherD

  • Rated 5 out of 5 stars

    Best Battery Chargers on the Market

    No better battery tender on the market. Have three of these NOCOs, and they are all great.

    This review is from NOCO - GENIUS2: 2A Smart Battery Charger – 6V/12V – Automatic Maintainer & Trickle Charger – For Lead-Acid & Lithium

    Posted by EricC

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Pros for NOCO - GENIUS2: 2A Smart Battery Charger – 6V/12V – Automatic Maintainer & Trickle Charger – For Lead-Acid & Lithium
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Specs

Questions & Answers
  • Hello, will this work with a 2.5L 2013 VW Beetle 5 speed Manual (not a turbo)? My VW Beetle has been checked and has no parasitic draws. Getting a Battery Tender was recommended but after reading some reviews people have been saying yours is better.

    NOCO Battery Chargers/Maintainers are rated to the Amp-Hour capacity of the battery. This information is usually listed on the front or top of the battery, but if you're not sure, please reach out to NOCO Support on the NOCO website with the manufacturer name and model number of the battery, and we can determine that information. The GENIUS2 is recommended for batteries up to 40 Amp-Hours.

    Answered by NOCO Product Expert
    NOCO Product Expert response
  • How long to charge a 100 amp battery?

    The GENIUS2 would take approx. 37.5 hours to charge a 100 Ah battery from 50% depletion.

    Answered by NOCO Product Expert
    NOCO Product Expert response
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