Price: $64.95 - $49.95
(as of Apr 28, 2025 03:36:59 UTC – Details)
The GENIUS2 is a compact, highly efficient, and powerful portable universal battery charger. It operates at 2 amps (30 watts) and is compatible with 100-240VAC 50-60Hz for both 6-volt and 12-volt batteries. This heavy-duty charger functions as a maintainer, trickle charger, float charger, and battery desulfator, handling batteries up to 40 amp-hours. It’s designed for various battery types including sealed lead-acid and lithium-ion (lifepo4), and can charge flooded, gel, maintenance-free, AGM, SLA, and VRLA batteries. Additionally, it supports automotive, marine, RV, and deep-cycle batteries.
Its advanced repair mode employs slow pulse reconditioning technology to identify battery sulfation and acid stratification, thereby restoring performance and prolonging battery life. The GENIUS2 can be used and stored virtually anywhere, be it at home, in a garage, or while on the go—it can even connect via your vehicle’s 12V cigarette lighter. With a next-gen charging system equipped with microprocessor technology, it offers fast recharging without any manual effort. It’s a fully automatic, professional-grade charger ensuring zero overcharging.
Designed for both indoor and outdoor use, this product is weather- and waterproof, making it suitable for all seasons, including winter. Its X-Connect battery connectors are superior to SAE, allowing for quick and permanent connections or direct access to battery terminals. Moreover, a digital display articulates the charging status and runs diagnostics for issues like dead batteries, reverse polarity, and more. It works seamlessly with all types of gas and diesel vehicles including cars, motorcycles, ATVs, boats, and classic cars like BMW, Mercedes-Benz, and Audi, just to name a few.
En español (ES): Conozca el GENIUS2, uno de nuestros cargadores de baterías universales portátiles más potentes, con mejor rendimiento, de bajo consumo y compacto hasta el momento. El GENIUS2 es un cargador de batería de servicio pesado de 2 amperios (30 vatios) – 100-240 VCA 50-60 Hz – 6 voltios y 12 voltios, mantenedor de batería, cargador lento, cargador flotante y desulfatador de batería para baterías de hasta 40 amperios-horas. Está diseñado para cargar y mantener todo tipo de baterías selladas de plomo-ácido y iones de litio (lifepo4), incluidas las inundadas, de gel, sin mantenimiento, AGM, SLA, VRLA, así como para automóviles, marinas, vehículos recreativos, deportes motorizados y profundas. -baterías de ciclo. Su modo regenerador 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 su vida útil. Se puede utilizar y almacenar en casi cualquier lugar (casa, garaje, móvil, banco o automóvil) para cargar y mantener cualquier batería, incluso enchufarlo a través del puerto del encendedor de cigarrillos auxiliar de 12 V de su vehículo. Su régimen de carga de próxima generación utiliza tecnología de microprocesador de carga rápida para recargar rápidamente las baterías sin 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. Sus conectores de batería X-Connect, mejores que SAE, permiten una conexión permanente de conexión rápida o una conexión directa a los terminales de la batería. Una pantalla digital proporciona el estado de carga y prueba los diagnósticos para múltiples condiciones, como batería agotada, batería defectuosa y polaridad inversa, entre otras. Y es compatible con todo tipo de vehículos de gas y diésel, incluidos automóviles, motocicletas, motos de cross, scooters, cortadoras de césped, vehículos todo terreno, UTV, tractores de césped, remolques, camiones, vehículos utilitarios deportivos, botes, caravanas, vehículos recreativos, PWCs, motos de agua, motos de nieve, carritos de golf, autos clásicos, incluidos BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, VW, Audi, Ford, Chevrolet, Cadillac, Jeep, Prius, Toyota, Subaru, Nissan, Honda, Harley-Davidson, Suzuki, Yamaha, Kawasaki, Ducati, KTM, Indian, Husqvarna, Vespa, Polaris, Seadoo, John Deere y más.
Discover the GENIUS2 – Similar to our G1100 but enhanced. It’s 30% smaller yet provides over 140% more power. It combines multiple functions: battery charger, maintainer, trickle charger, float charger, and battery desulfator.
Get more from Genius – Specifically designed for sealed lead-acid batteries (6-volt and 12-volt), including automotive, marine, RV, powersport, and deep-cycle options like flooded, gel, AGM, SLA, VRLA, and maintenance-free, plus lithium-ion batteries (lifepo4).
Experience precise charging – The built-in thermal sensor gauges the ambient temperature, adjusting the charge to prevent overcharging in high heat and undercharging in cold environments.
Revive dead batteries – Capable of charging battery voltages as low as 1 volt, or initiate charging in our new force mode to manually begin charging from zero volts.
Restore battery performance – Our sophisticated battery repair mode uses slow pulse reconditioning technology to address sulfation and acid stratification, ensuring stronger starts and extended battery longevity.
Beyond mere maintenance – This isn’t just a trickle charger; it’s an advanced battery maintainer. Fully automatic and worry-free for everyday use—24/7—with no risk of overcharging.
Compatible with all gas and diesel vehicle types – Effortlessly charge and maintain everything from cars and motorcycles to ATVs, boats, classic cars, and beyond.
What Customers Are Saying
Users report that the battery charger works effectively in all situations, acting as an excellent trickle charger that keeps batteries in top condition. It’s described as durable, user-friendly, and compact enough for easy storage and transport. Customers enjoy its multi-purpose functionality and feel it’s a good value for money.
Generated by AI from customer review data
David Perez –
Highly recommended for old batteries.
I 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.
Samm Reyes –
Nice, compact and it works.
Very nice, it worked well for me! Charged a dead battery I had my doubts but itâs works.Compact and works great! It worth the price
gunmetalblue2010 –
Small but mighty!
My landlord has his car here for storage but needs it every now and then. I was about to take it out to keep the fluids going and found out the cars dead. Tried a different but popular brand battery charger maintainer and after a jump start. Let it charge overnight. Woke up to try it again and found out it was dead still.Got this shipped same day and immediately it started charging the battery without needing the force charge. Let it sit overnight and surprised the performance was much better. Yes it’s slowly charging (box says 30 hours or more) but the connectivity is reliable and strong. Temperature I noticed was warm but not hot. And checked on it again and saw the indicator went to above a quarter charged which is already much better.Small and powerful, it will charge batteries from dead but it is a slow charge. Very much value for money when it is on sale but it works so well I’m going to use it on my weekend car that sits in the garage or maybe buy a second one because it works so well and has options for other kinds of batteries!
Amy B –
Great little device!
I love this powerful little charger! It’s so much easier to use than my old, clunky one – no need to find a small table or stand to hold the charger next to the vehicle while charging, just hook it up and leave it resting near the battery under the hood. I purchased this to give my Mini Cooper a boost when needed since there are periods in winter when I don’t drive it, but I’ll definitely use it on my other vehicle battery as well. I will say that you need to be patient – the first time I used it I thought it might be defective because it took so long for the indicator lights to move off the first charging “step”. But the first step seems to be the longest, as after it was reached the lights moved to “fully charged” pretty quickly. The whole process took about 9 hours for me, but that will vary depending on how discharged your battery is. I’m so glad I happened to see this great little device on a YouTube video!
KHo –
Compact and charges well
I use this on my UTV, motorcycle, and lawnmower. Works great and I love the small foot print. The one thing I would change is to make the clips smaller so it can fit on the battery post better. I had to remove the cables on my motorcycle to use this.
Serge –
Incredibly easy to use
The NOCO GENIUS2 is incredibly easy to use, and it did exactly what it promised. My battery was completely dead, and this genius device revived it perfectly. A lifesaver and well worth the money!
Steve Masters –
Was doubtful it would refresh an old battery. But it did!
I have a 18 year old riding mower. About every 2 years I have to replace the battery, where it wonât crank again even if it was just shut off from running for a while. Put this on the old battery and itâs now working like brand new. Multiple startups without having to jump off the battery. I was doubtful that it could ârefreshâ an old battery but it works. Saved money, didnât have to replace the battery.
rick sherman –
Great multiple charger
I really like the way the updated charger keeps my lithium ion motorcycle battery topped off. Robust design and small enough to provided the correct power to keep my battery in peak working condition.
Yoshio O. –
muy fácil de utilizar, tamaño super pequeño
David Shaw –
Straight out of the box and put to work…….you need to sort the plug out though, not Aus standard.
AMAS –
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Dan Bradley –
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.
Amir mun –
I recently purchased the GENIUS2 and I must say, it has completely exceeded my expectations. Right out of the box, the first thing that struck me was its compact design. It’s small and lightweight, making it incredibly convenient for storage and handling.Setting it up was a breeze. The instructions were clear and straightforward, ensuring a hassle-free experience even for someone who isn’t particularly tech-savvy. This ease of setup is a huge plus, especially in emergency situations where time and simplicity are of the essence. Simply connect your battery and turn the device on, click the button to select the correct mode and you’re good to go!The fact that it works as expected without any complications adds a level of trust and reliability that I greatly appreciate.Additionally, the packaging was well-thought-out and secure, protecting the charger during shipping. This attention to detail extends to the charger itself, which has a premium feel to it. The build quality is excellent â it doesnât feel flimsy or cheap, which is often a concern with tech products.Overall, the NOCO GENIUS2 is an outstanding product that I would highly recommend. Its combination of compact size, ease of use, efficient performance, and premium build quality makes it a top-notch choice for anyone in need of a reliable car battery charger.