NOCO GENIUS1 1A 6/12V Smart Battery Charger, Trickle Charger & Maintainer
Condition: Used - Like New
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Availability:
Only 5 left in stock, order soon!
Arrives
Friday, Oct 9
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Size: 1A
Features
- MEET THE GENIUS1 Similar to our G750, just better. It's 35% smaller and delivers over 35% 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 1A charger, a direct wall plug-in, 110-inch DC cable with battery clamps, and integrated eyelet terminals, and 3-year warranty. Proudly designed in the USA.
Description
The GENIUS1 is the ultimate all-in-one solution for battery charging, maintenance, and restoration, delivering 35% more power in a 35% smaller design compared to its predecessor, the G750. Designed for 6-volt and 12-volt lead-acid (AGM, gel, flooded, and deep-cycle) and lithium-ion (LiFePO4) batteries (up to 30 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 GENIUS1 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 GENIUS1 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 1A charger (120-240VAC), a direct wall plug-in, 110-inch DC cable with battery clamps and integrated eyelet terminals, all backed by a three-year warranty. Proudly designed in the USA, the GENIUS1 combines power, reliability, and convenience in a compact design to keep your batteries ready for whatever lies ahead.
Brand: NOCO
Color: Black
Product Dimensions: 4.02"D x 3.43"W x 6.73"H
Item Weight: 15.2 ounces
Output Voltage: 12 volts
Output Voltage: 12 volts
Input Voltage: 120 volts
Battery Charge Time: 1E+1 hours
Current Rating: 1 A
Amperage: 1
Compatible Devices: Cars, Boats, Motorcycles, ATVs, RVs, Trucks, SUVs, Scooters, Lawn Mowers, Tractors and More
Connector Type Used on Cable: Battery Clamps and Eyelet Terminals
Number of Ports: 1
Item Dimensions D x W x H: 4.02"D x 3.43"W x 6.73"H
Item Weight: 15.2 ounces
Specification Met: CEC, FCC, UL
Color: Black
Brand: NOCO
Mfr Part Number: GENIUS1
Global Trade Identification Number: 21
UPC: 046221190021
Number of Items: 1
Manufacturer: NOCO
Item Highlight: Overcharge Protection, Desulfator, Temperature Compensation, Force Mode, For Lead-Acid (Wet, Gel, AGM) & Lithium (LiFePO4)
Unit Count: 1 Count
Built-In Media: 3-Year Limited Warranty, Battery Charger User Guide, GENIUS1 1A Smart Battery Charger and Battery Maintainer, Needle-Nose Battery Clamps With Integrated Eyelet Terminals
Item Type Name: NOCO GENIUS1, 1A Smart Car Battery Charger, 6V and 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Motorcycle, ATV, Lithium and Deep Cycle Batteries
Model Number: GENIUS1
Warranty Description: 3 Year Limited
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Oct 9
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 1A
So I just bought a brand new one two years, but it’s because I never registered the warranty for our first one. This is basically a one piece kit that is a great starter for battery charging for most kinds of automotive and marine batteries. It’s very simple to use, and the one reason our last one stopped functioning is because of built in fail safes. In this case: my wife and I were washing our camper and this got wet and then got some dirt on it, it got through the water resistant seal and the charger could detect this. The great news is the charger will literally cease to function if it has become damaged. It will give a flashing red light, and you cannot put it into Force Charge mode. The only downside is unless you have a multimeter, you may not know that it has become damaged internally. I figured it out because of the mode not working, and it wouldn’t charge any batteries. The fuse was fine. So make sure you register this when you get it. It does the job and the only way you know it’s working is because of the status light, as it is beyond quiet. It’s basically a plug with the clamps for the battery terminals, so it is easy to store and carry around. I highly recommend this charger if you need something simple without a lot of functionality, just don’t leave it exposed to the elements.
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Reviewed in the United States on July 10, 2026 by Shane
Size: 1A
no, the value for money for this product is excellent along with its usefulness and functionality. The cable length is perfect and is versatile on all my different batteries. It ensures that when I look at it, the light is on I know it’s charging and when I disconnect and start my vehicles up or install the battery into one of the vehicles it works peace of mind it’s worth the price. The value for the money is way better than buying a new battery I have four of them and they’re all hooked up to cars and farm equipment. Definitely will not stop using this type of product. Highly recommend if you want to save money get this and not worry about your batteries.
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Reviewed in the United States on July 26, 2026 by E
Size: 1A
I used to buy and use another brand of low current charger / maintainers for my power equipment and vehicles. However that brand became cheaply made compared to their initial offering and at a much higher price too. Several died after a brief thunderstorm. I saw the NOCO Genius chargers on a YouTube product review channel called "Project Farm" where several brands of similar chargers were thoroughly compared. The NOCO Genius brand scored the best IMHO and was the only brand capable of charging a dead, or almost dead, battery. They are price competitive and now the only brand I will buy (I now own several 1A & 5A units). So far I am pleased with how well they work. One of them, attached to my backhoe, was exposed to wet weather during a violent storm and it wasn't affected buy it. Given the price of a group 31 battery these days, preserving their life without boiling them dry from over charging, is money well spent. Update (9/1/2026): In July 2026, just 9 months after purchase and placed in service on my John Deere backhoe, this unit failed. No lights lit and no output. Started a warranty claim, received an RMA number, send the charger to them at my expense with tracking showing it arrived on 8/21/2026 As of this update I have neither heard back nor have I received a replacement. I was initially happy but others have reported units failing as I have now experienced. So I am lowering my rating unit I receive satisfaction on my warranty claim. Update (9/2/2026): Today I received a replacement NOCO Genius1 for the defective unit I sent in to their warranty department. I was told to expect 2 - 3 weeks after receiving the defective unit and verifying it was indeed defective and not tampered with. I had not received any emails or text messages so when this unit arrived today, which was less than the estimate, I was caught off guard. I am now restoring the 5 star rating I had given this item previously. I'll keep this review updated if the replacement fails.
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Reviewed in the United States on March 11, 2026 by Gary P
Size: 1A
Works well. Even let's you know if the battery won't hold a charge. I was disappointed that it won't work on the Nickel-Metal Hydride battery in my car. Other than that it is good quality like all the NOCO products
Reviewed in the United States on June 9, 2026 by Kathy R.
Size: 1A
I have a truck that mostly sits in the garage. Every time I need to back it out of the garage, the battery is dead. I know that just sitting isn't good for batteries, not to mention this battery is several years old. Now keep in mind, this is a large amp battery for a SUV, which was so dead, a turn of the key and I didn't even get lights on the dash. I stuck this little charger on it and it took a day and a half, but it charged completely. Ok, now I'm beginning to get a tad impressed. I have two of those old type chargers, you know the ones that after a while you can hear the acid boiling inside the battery, and the battery is getting really hot... you know the chargers that tell you not to leave it on your battery for any extended period of time as this might (will) damage the battery (possibly even start a fire). Well... no more. I'm a total convert now to using smart chargers, and this one seems especially good. I really hope I don't find some little something that breaks 6 months from now, cause I really like this charger! It seems very well designed and made and most of all, it works great. The only negative I can find, it has a single button to select one of several charging modes, and LED's to indicate which option you have chosen, and those LED's are pretty much self explanatory, as well as an advanced mode where you have to push and hold the single button to enter advanced charging mode. For example, if your battery is so bad, the charger cannot detect there is even a battery hooked up, you can tell it to go ahead and start charging anyway which is a really nice feature. As another reviewer mentioned, when you need to use some of the more advanced functions, if you've lost the booklet, well... good luck. The multi-language booklet briefly explains all of the options, what the LED's mean, and that's pretty much it, verbose it isn't.. It comes in a really nice packaging, like you're really getting something ( and you are), the unit itself seems well made and thought out, you would think a bit more of an effort would have been put into the manual. But, perhaps the product speaks for itself... and it does. And, after all most users will hook it up to their 12 volt car/boat/motorcyle battery, plug it in, select the regular 12v battery option, and that's all most will ever need. Once the battery is charged completely, the charger senses that, and switches automatically to just maintaining the battery. If you loose power while charging (or maintaining), this charger just picks up right where it left off, so there is no worries about pushing buttons or selecting modes, it knows what you were doing before, and starts right back up with doing it again. Am I glad I got it: Yes Would I buy it again: Yes.
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Reviewed in the United States on March 11, 2020 by W. C. Greer
Size: 1A
In January 2026, the temperature dropped to -25°, without wind-chill, over 3 days. The electricity went out. I needed to start my emergency generator, and the battery was dead. I start the generator every month and run it for 1 hour to maintain the battery. This battery was only 7 months old. I was lucky. I had a battery for the sump pump in case of emergency, and I was able to use it. Here it is the end of August 2026, and we've been experiencing thunderstorms daily. Last night the electricity went out. I've had the battery on the NOCO Genius 1 since January. I installed it and the generator started right up. The battery has been on the charger for 7 months, so if there was a problem with the charger, I'd know by now. The charger is reliable and it protects the battery. Choose the right one by amperage of your battery.
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Reviewed in the United States on August 23, 2026 by dsk
Size: 1A
Okay, I did NOT expect this little thing to work, but it did and might for you IF you have patience. My Grandfather who was MoAT (Mechanic of All Things) owned back in the day what I thought were REAL chargers, they were so big and heavy they had to be put on wheels and rolled around, they had giant switches that'd illuminate and while I'm probably purely imagining this they were plugged into 220-volt outlets. This thing fits in the palm of my hand, just as pictured, smaller than most mobile phones. "Huh," I said, "this should be comical." I hooked it up and, as others have said, figuring this thing out is NOT straight forward, the instruction manual is weak to say the least, the good news is, as I found, there are many intrepid experimenters who, like me, bought it on a whim and did some trial and error which it'd seem 99% of them got the thing to work to their needs, just like me hence, I'm taking the time to write this review. What this lacks in coherent features or instructions it makes up for it in the end by eventually (boy I mean eventually) getting the job done, for that honestly I'm giving it a generous five stars, because it did what I wanted it do against all odds, just like the Phil Collins song. ("Just take a look at my car now, 'cause it's finally starting here.") To get the to point, this took TWO WEEKS to charge a completely dead battery in a completely dead system. If it'll help anyone I own a 2000 Lexus RX300 that is, in fact, drinking age, if I could find a small ute-friendly bar to have a couple with me of which, in terms of trusty old friends, this boring beige over beige has been one of my best now with over 270,000 miles with no reason, per the Lexus dealer, to give up the ghost before 300,000. Toyota quality and then some with only wearables and maintenance needed BTW, the car has only had one issue, eating car batteries every four or so years. Being a cheap bastard and Lexus parts are pricy I've chosen battery over a slightly-off generator which brings us to the recent hullabaloo and the need to be the Noco Genius, though it'd prove not straightforward as I hoped. Hooking up the Noco Genius you get a slowly blinking light, like a heartbeat, that will tell you nothing really. Also there's a force-charge setting where you hold the button (there's only one button on the whole thing, this thing is basic) it supposedly will force a charge into a battery... this doesn't work, at all. After some digging it supposedly only does this if a battery is below some arbitrary limit which, my battery was completely dead, kaput, nada, force charge only made the 6V light go on which, apparently, is what others experienced. Point being, don't hold you breathe. I kept trying to charge the battery but it didn't budge, didn't budge, didn't budge, then I had a thought and said to myself "self, what if I unhook the battery, THEN charge it?" As in, is it because it's also hooked to my car hence current is going other places? Mind you, this thing is only one (1) amp, that's very little, if you're looking for a quick charger or something to charge and jump your car, this ain't it, have you seen the size of this thing? Ha no, no, but it will trickle, very slowly, a charge into your battery... if it's not hooked to the car. Listen, some people this may work when the battery is not hooked up and, in fact, I hooked my battery back up AFTER this thing actually worked and then hooked up the Noco to it and it did, in fact, go from red blinking to green, sooo, yeah, that happened. But I'm burying the lede here: The Noco charger worked for me but ONLY after it was hooked to the battery without being connected to the car. Total time to charge the battery not hooked to the car? About 36 hours. Great? Eh, there's a pandemic, I'm not really going out much so had time on my hands, not to mention my wife's car. In summation, IF you have even a completely dead battery or run down battery and IF you don't have to go anywhere in the next two days and IF you're comfortable unhooking the leads from your car to your battery so that it'll only be charging the battery itself this Noco Genius is, er, uh, genius! It really works! It works and for the cheap cheap cheap money its worth every penny. If this thing cost even 50% more I'd be taking down stars but this thing cost less than a steak dinner (back when I ate steak) so suffice to say it got my battery charged all the way up, hooked up to my car and after the computer was all "what the... ??? Was I in a coma" my car fired right up and ran, I even drove it around a bit. This would be a good thing to own for just-in-case as its just in case money. If you have any situation close to mine, get this trickle charger, if you need the big guns, well, open up your wallet and say ah. Luckily most of us, probably 99% of us, if your battery is run down, this will do the trick. Best of luck!
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Reviewed in the United States on January 24, 2021 by C. Nekritz
Size: 1A
Easy to use and highly recommended. I think they should include quick connect adapters which many of us have but need to purchase separately.
Reviewed in the United States on August 21, 2026 by Greyelf57