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NOCO

NOCO GENIUS5: 5A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium Batteries

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 17
Order within 19 hours and 44 minutes
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Features

  • MEET THE GENIUS5 Similar to our G3500, just better. It's 34% smaller and delivers over 65% 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 5A 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.

Description

The GENIUS5 is the ultimate all-in-one solution for battery charging, maintenance, and restoration, delivering 34% more power in a 65% smaller design compared to its predecessor, the G3500. Designed for 6-volt and 12-volt lead-acid (AGM, gel, flooded, and deep-cycle) and lithium-ion (LiFePO4) batteries (up to 120 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 GENIUS5 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 GENIUS5 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 5A 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 GENIUS5 combines power, reliability, and convenience in a compact design to keep your batteries ready for whatever lies ahead.

Brand: NOCO


Color: Black


Product Dimensions: 3.43"D x 4.61"W x 7.95"H


Item Weight: 1.59 Pounds


Output Voltage: 12 Volts


Product Dimensions: 3.43 x 4.61 x 7.95 inches


Item Weight: 1.59 pounds


Item model number: GENIUS5


Is Discontinued By Manufacturer: No


Date First Available: November 18, 2019


Department: unisex-adult


Manufacturer: NOCO


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Excellent Charger, Easy to Use - Would HIGHLY Recommend
Size: 5A
I've used a number of different battery chargers over the years and this is by far the best one. I live in the middle of the US with hot weather in the summer and cold weather in the winter. Since I can't drive much due to medical issues my battery will not have enough juice to start my car (12v lead acid battery) and it's so easy to connect this for 1-2 hours and it's ready to go. My concern when I bought it as the size but it's great how well it works. It's a small device and is very accurate detecting how much charge my battery has. Also, a couple of times battery was dead and it was excellent. ... show more
Reviewed in the United States on October 1, 2025 by D. Hooper
    • NOCO GENIUS5 compared to Schumacher SP1296
Size: 5A
Review Image by Peter H. Peter H.
Review Image by Peter H. Peter H.
I've used Schumacher SP1296 trickle chargers for many years now, on multiple vehicles and pieces of equipment. Recently I switched all of them to the NOCO GENIUS5 and it's better in every way! On all of the Schumacher chargers I've had, (and that's been a LOT of them) the cord has eventually frayed and broken where it exits the charging unit. On the NOCO, the cord has a rubber reinforcement where it exits the unit, extending the life of the cord. I've included photos of the NOCO (black) and the Schumacher (red) for reference. The Schumacher chargers I've had were dependable and functioned well, but their cord design was a major design flaw for me. Multiple times, It forced me to replace the units before I should have needed to buy new ones. The NOCO is slightly heavier and more compact in size than the Schumacher. The control has more functions and is easy to use. The NOCO display is aesthetically more pleasing and easier to read than the Schumacher. The NOCO also has an on/off switch which is nice. I always use the eyelets to connect to the battery. The charger connection to the eyelet cord has a click type plug to lock it in place, unlike the Schumacher which just presses together. Should you want to use the battery clips, the NOCO clips are bigger and stronger than those on the Schumacher. The only negative aspect of the NOCO that I found was that, according to their user manual, "This product is designed to work in ambient temperatures between -4°F and 104°F". This has not been a problem for me, even when used outside in northern Vermont. It does get below zero here, but typically not for extended periods of time. As long as the charger is kept on the battery, and it's always fully charged, that temperature limitation hasn't been an issue for me. Overall, the NOCO GENIUS5 appears to be a higher quality and better built charger than the Schumacher SP1296. I am very satisfied with their product, and I highly recommend it. ... show more
Reviewed in the United States on February 22, 2025 by Peter H. Peter H.
    • Well worth purchasing.
Size: 5A
This is one of the best chargers I have ever had. It is small (light in weight), yet very powerful. It has options for lithium, or regular batteries, and different voltage. I was so surprised to find that it repaired my battery that was damaged (unsure why it was damaged), and it worked incredibly well. It also will not allow overcharging -- a very nice feature. Cords are long enough so no need to worry about that. The indicator lights tell you where it is in the charging process, so that is really nice, and turns green when it has completed the process. ... show more
Reviewed in the United States on July 12, 2025 by MarkB
    • Great product - works as advertised
Size: 5A
I had a prior trickle charger that just up and stopped working. By the time I realized it, the car battery was dead. Like totally dead. Well, I researched products to restore the battery and recharge it and decided to purchase this one. I followed the instructions on plugging it in, but with a dead battery, I kept my hopes in check. Well, the product lived up to its hype - in less than 1 day my battery was back to full charge and the car cracked over first try! I have it connected now since we don't drive that car very often and this is a smart trickle charger so I feel like it will maintain the battery better. Easy to use and definitely built in safety. The status lights are great too. Definitely worth the money. Would buy again. ... show more
Reviewed in the United States on May 20, 2025 by dh135
    • Reliable and Efficient Battery Charger but no Instruction Guide Included
Size: 5A
The NOCO GENIUS5 does exactly what it’s supposed to do. It charges my older vehicle’s battery quickly and efficiently. I noticed it works faster and more reliably than the cheaper charger I own. It’s is more compact, well-built, and feels like a quality product that’s designed to last. However, I do wish it came with an instruction guide explaining its functions and indicators. As someone who isn’t particularly knowledgeable about cars, having clear instructions would have made things easier. My cheaper charger actually came with a very helpful guide, so I was a bit surprised that this one didn’t. I ended up having to look online to make sure I was using it correctly and safely. Another thing I notice is that the button is not as intuitive. There's a delay when pressing the button. That said, once I understood how it worked and managed my patience, it performed flawlessly. I just wish the user guidance matched the quality of the device itself. ... show more
Reviewed in the United States on October 19, 2025 by Prima

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