Manufacturer | NOCO |
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Place of Business | NOCO, 30339 Diamond Parkway, #102, Glenwillow, OH 44139 USA |
Brand | NOCO |
Model | GENIUS1 |
Product Dimensions | 8.89 x 5.84 x 3.3 cm; 430.91 g |
Item model number | GENIUS1 |
Exterior | Machined |
Manufacturer part number | GENIUS1 |
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 |
Amperage | 1 Amps |
Item Weight | 431 g |
Country of origin | China |
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NOCO GENIUS1: 1A 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 | 10.2D x 8.7W x 17.1H Centimetres |
Item weight | 0.95 Pounds |
Output voltage | 12 Volts |
Specification met | CSA, FCC, UL |
Input voltage | 120 Volts |
Charging time | 30 Hours |
Current rating | 1 Amps |
Global Trade Identification Number | 00046221190021 |
About this item
- 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.
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Top Brand: NOCO
From the brand

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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

![]() GENIUS1 | ![]() GENIUS2 | ![]() GENIUS5 | ![]() GENIUS10 | |
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Customer Reviews
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4.6 out of 5 stars 53,857
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4.6 out of 5 stars 16,404
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4.6 out of 5 stars 18,392
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4.6 out of 5 stars 18,343
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Charging Current
| 1 Amp | 2 Amps | 5 Amps | 10 Amps |
Battery Capacity
| 30Ah | 40Ah | 120Ah | 230Ah |
Output Power
| 15W | 30W | 75W | 150W |
12V Repair Mode
| ✘ | ✘ | ✔ | ✔ |
12V Supply Mode
| ✘ | ✘ | ✘ | ✔ |
6V AGM Mode
| ✘ | ✘ | ✘ | ✔ |
Product 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.
Product information
Technical Details
Additional Information
ASIN | B07W46BX31 |
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Customer Reviews |
4.6 out of 5 stars |
鶹 Rank |
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Date First Available | Aug. 20 2019 |
Feedback
Compare with similar items
This Item ![]() NOCO GENIUS1: 1A 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 | $52.95$52.95 | -14%$23.99$23.99 Was: $27.99 | -21%$75.03$75.03 List: $94.95 | $1,522.38$1,522.38 | $861.06$861.06 | $33.99$33.99 |
Delivery | Get it by Tuesday, Jul 1 | Get it by Tuesday, Jul 1 | Get it by Thursday, Jul 3 | Get it by Tuesday, Jul 1 | Get it by Tuesday, Jul 1 | Get it by Tuesday, Jul 1 |
Customer ratings | ||||||
Sold by | 鶹.ca | Power Source by HY | Flyer Price | 鶹.ca | 鶹.ca | GUANGZHOU YOSEN GREEN MATERILA |
output voltage | 12 volts | 12 volts of direct current | 12 volts | 24 volts | 24 volts | 12.0 volts, 24.0 volts |
input voltage | 120 volts | 115 volts of alternating current | 240 volts | 120 volts | 120 volts | 110 volts |
battery charge time | 30 hours | — | — | 240 hours | 240 hours | — |
specification met | UL | CE, UL | CE | UL | UL | CSA |
Customer reviews
Customers say
Customers like the reliability, ease of use, and quality of the battery charger. They mention it works extremely well, is easy to install, and has a clear instruction manual. Customers also appreciate the charging speed, saying it's perfect for charging their batteries back to their full potential. They also say it's a great product for battery maintenance and compatibility.
AI Generated from the text of customer reviews
Customers like the reliability of the battery charger. They mention it works extremely well, has no issues at all, and is a valuable addition. Customers also say it works great for trickle slow charges for batteries that need to be maintained or topped up.
"...Its build quality, features, and performance make it a valuable addition to any car owner's toolkit...." Read more
"...All products work perfectly, boat batteries tested today at Interstate, 2022 always plugged in, year round...." Read more
"...Now still holding up works great, no issues at all." Read more
"...shorted out for some strange reason so grabbed another one and works perfectly" Read more
Customers like the ease of use of the battery charger. They mention it's very simple to use, the instruction manual is clear, and the hook-up is simple. Customers also say it is a valuable addition to any car owner's toolkit.
"...build quality, features, and performance make it a valuable addition to any car owner's toolkit...." Read more
"The very best !!! Small but soooo handy. Loading my batteries without worry of overcharging !!! How great is that ?" Read more
"...The quality is top-notch, the ease of use can't be beaten and it works perfectly...." Read more
"...It's well designed, high quality, easy to use (the only thing I haven't figured out is how to force a charge), and very reasonably priced...." Read more
Customers are satisfied with the quality of the battery charger. They mention it has a solid build, good quality connectors, and durable wire. Customers also say it's more trustworthy than cheaper offshore models. They also mention the packaging looks top quality and they have not had any problems with the wire breaking.
"...it on sale, I'd highly recommend this charger to anyone looking for a reliable and efficient solution for maintaining their vehicle's battery." Read more
"...Feel like quality products, I’m a supporter." Read more
"Excellent product. Brought a 10+ year old battery back to life." Read more
"Been using this charger for a few years.Now still holding up works great, no issues at all." Read more
Customers like the charging speed of the battery charger. They mention it's perfect for charging motorcycle batteries, charging solar batteries for camper vans, and trickle charging flat batteries. Some say it's the best charger on the market.
"...Multi-Stage Charging*: It charges in multiple stages, ensuring a full charge without overcharging. - *..." Read more
"...otherwise, still an excellent charger and i just bought another...." Read more
"...popped the hood and connected the extension cord and the battery charged up just fine...." Read more
"...This charger managed to recharge it just fine. Just charges fairly slow, so give it a couple of days...." Read more
Customers like the battery maintenance feature of the product. They mention it refills and revives nearly dead batteries. Some say it's the best battery maintainer and is easy to use. However, some customers have mixed opinions on the charging speed.
"...This charger is designed to maintain and charge 12V batteries, and it does so with precision and reliability. *..." Read more
"...chargers for their maintenance features, they will discharge and exercise each battery, including allowing it to discharge then recharging again via..." Read more
"The very best !!! Small but soooo handy. Loading my batteries without worry of overcharging !!! How great is that ?" Read more
"My 2005 Avalanche did not like the cold and little use so the battery got very low, would not even turn over. It can now run...." Read more
Customers like the compact size of the battery charger. They mention it's good for small batteries, the clips are perfect size for the smaller powersports battery terminals, and the eyelets fit over 10mm bolts perfectly. Some say it's easy to carry in a motorcycle saddlebag, and the product is the perfect item for all RV users.
"The very best !!! Small but soooo handy. Loading my batteries without worry of overcharging !!! How great is that ?" Read more
"...The eyelets fit over 10mm bolts perfectly. Highly recommended!!!" Read more
"This is the perfect item for all RV users ........ The majority winterize the RV's (except Snowbirds) and we store the Battery in a safe location..." Read more
"...Clips are perfect size for the smaller powersports battery terminals. Can leave it plugged in indefinitely now that I have it...." Read more
Customers like the battery compatibility of the product. They mention it will do all battery types, is perfect for marine starter/deep cycle combo batteries, and works great for any types of battery. Customers also say it's easy to use for a variety of battery types.
"...Compatibility*: Suitable for a wide range of battery types, including lead-acid, calcium, and maintenance-free batteries. - *..." Read more
"A perfect match for the Noco LiFeP04 powersports batteries...." Read more
"...Works extremely well and can be used on different types of batteries and can charge dead battery and is great for battery maintenance...." Read more
"...to tell what is happening behind the scenes but it has charged my standard and AGM batteries as I expected...." Read more
Customers like the battery life of the product. They mention it's very good in cold climates, perfect for keeping batteries charged up through the cold (-40C) winters, and keeps their summer and winter cars ready for them when it's time to take them out. Customers also say it works well for car batteries at cold temperatures.
"...It's proven that it will prolong the life of your batteries. My boat battery is 15 years old." Read more
"I stow a vehicle over the winter so this is great for extended periods" Read more
"...Works perfectly for my Drz400 motorcycle so that it starts when it's cold overnight...." Read more
"...Keeps my summer and winter cars ready for me when it's time to take them out. Definitely worth it!" Read more
Reviews with images

** Top-Tier Battery Charger for the Discerning User**
Top reviews from Canada
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- Reviewed in Canada on May 24, 2025Verified PurchaseI recently had the opportunity to purchase the NOCO GENIUS1, 1A Car Battery Charger, and I'm thoroughly impressed with its class-leading build quality and performance. This charger is designed to maintain and charge 12V batteries, and it does so with precision and reliability.
*Key Features:*
- *Microprocessor-Controlled Charging*: The GENIUS1 uses advanced algorithms to charge your battery safely and efficiently.
- *Multi-Stage Charging*: It charges in multiple stages, ensuring a full charge without overcharging.
- *Compatibility*: Suitable for a wide range of battery types, including lead-acid, calcium, and maintenance-free batteries.
- *Safety Features*: Overcharge protection, spark-proof technology, and reverse polarity protection ensure safe operation.
*My Experience:*
I was pleased to find this charger on sale, which made the purchase even more appealing. The build quality is exceptional – the unit feels solid, and the design is intuitive. I've used it to maintain my car's battery during the winter months, and it's performed flawlessly. The charger's LED indicators provide clear feedback on the charging status, making it easy to monitor the process.
*Verdict:*
The NOCO GENIUS1 is a top-tier battery charger that exceeds expectations. Its build quality, features, and performance make it a valuable addition to any car owner's toolkit. Given its capabilities and the fact that I snagged it on sale, I'd highly recommend this charger to anyone looking for a reliable and efficient solution for maintaining their vehicle's battery.
5.0 out of 5 starsI recently had the opportunity to purchase the NOCO GENIUS1, 1A Car Battery Charger, and I'm thoroughly impressed with its class-leading build quality and performance. This charger is designed to maintain and charge 12V batteries, and it does so with precision and reliability.** Top-Tier Battery Charger for the Discerning User**
Reviewed in Canada on May 24, 2025
*Key Features:*
- *Microprocessor-Controlled Charging*: The GENIUS1 uses advanced algorithms to charge your battery safely and efficiently.
- *Multi-Stage Charging*: It charges in multiple stages, ensuring a full charge without overcharging.
- *Compatibility*: Suitable for a wide range of battery types, including lead-acid, calcium, and maintenance-free batteries.
- *Safety Features*: Overcharge protection, spark-proof technology, and reverse polarity protection ensure safe operation.
*My Experience:*
I was pleased to find this charger on sale, which made the purchase even more appealing. The build quality is exceptional – the unit feels solid, and the design is intuitive. I've used it to maintain my car's battery during the winter months, and it's performed flawlessly. The charger's LED indicators provide clear feedback on the charging status, making it easy to monitor the process.
*Verdict:*
The NOCO GENIUS1 is a top-tier battery charger that exceeds expectations. Its build quality, features, and performance make it a valuable addition to any car owner's toolkit. Given its capabilities and the fact that I snagged it on sale, I'd highly recommend this charger to anyone looking for a reliable and efficient solution for maintaining their vehicle's battery.
Images in this review
- Reviewed in Canada on May 4, 2025Verified PurchaseI bought the Genius 1 to help maintain the 62ah, Enhanced Flooded Battery (EFB) in my new 2025 Subaru Crosstrek. The vehicle had been sitting for two weeks and the battery voltage reading was 12.4 volts. I hooked up the Genius 1 and the LED was pulsing RED, indicating charge mode. I figured it would take 6 hours or so to charge up the battery and then the LED would switch to pulsing Green , maintain mode.
After about 13 hours of charging the LED was still pulsing Red. I thought that at this point it should have switch to the pulsing Green LED , maintain mode. Was my battery being overcharged ?
It took about 14 hours for the LED to change from Red to Green. I was relieved to see that it finally switch to the maintain mode. I then unplugged the charger and I let the battery rest for a hour and then checked the voltage.
It was reading 12.8 volts. So the battery voltage went from 12.4 volts to 12.8 volts. I wrote this review so that others may have an idea of how long it takes the charger to go from charge mode to the maintain mode.
- Reviewed in Canada on June 17, 2025Verified Purchase6th Noco item I have purchased. Onboard chargers in my boat and side by side, along with hidden receptacles and now I have two 1amp chargers. All products work perfectly, boat batteries tested today at Interstate, 2022 always plugged in, year round. They were 100% and rated for 800ish cranking and was putting out 1020 when the guy tested them. Feel like quality products, I’m a supporter.
- Reviewed in Canada on December 30, 2021Verified Purchasethis version is advertised as fully automatic. it is not fully automatic, you have to manually select modes, from there the recharge discharge maintenance etc is auto. it's not the end of the world but let me tell you, the first two generations of this charger are fully automatic and its super nice to just clamp onto the battery and plug in the charger without really caring if its 6v, 12v or whatever.
otherwise, still an excellent charger and i just bought another. the temp compensation is a gimmick in my opinion, after 18 months I've actually noticed 0 difference vs the gen1 and gen 2 versions of this charger in temperatures ranging from +45C to -50C.
the alligator clips hang onto car battery terminals (large) and spare ups battery terminals (can be tiny) equally well.
i have a few of these 1amp units and use these to maintain car batteries as well as an atv and a motorcycle. I use one to periodically top up a full size truck battery and ups batteries. My batteries range from 1yr to 12yrs old and from 7 Ah to 110Ah. All my vehicle batteries are original because of these 1 amp noco's.
I learned that you buy a charger representing 10% of the Ah rating of your battery and if you call noco to complain your 1amp isnt charging your 50Ah car battery fast enough, they'll clue you in and may suggest a 5amp charger. But... i have large and small batteries and I wanted them for maintenance and extending battery life, not charging as fast as possible.
A bigger charger means faster charging, i feel safer with the slower charging and all my batteries respond well. I buy these chargers for their maintenance features, they will discharge and exercise each battery, including allowing it to discharge then recharging again via automated maintenance cycle.
worth it!
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Reviewed in Canada on June 21, 2025Verified PurchaseJ'aime bien mais il ne faut pas être pressé
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Reviewed in Canada on June 23, 2025Verified PurchaseFonctionne très bien. Merci
- Reviewed in Canada on June 15, 2025Verified PurchaseExcellent product. Brought a 10+ year old battery back to life.
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Reviewed in Canada on June 17, 2025Verified PurchaseTrès bon achat
Top reviews from other countries
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J TrejoReviewed in Mexico on February 16, 2025
5.0 out of 5 stars Cumple su función
Verified PurchaseLa batería de mi moto se descargó a 7.8V por tenerla sin movimiento por dos meses. La dejé cargando por aprox. 12hrs y después de eso marcaba 12.7V, se la puse de vuelta y arrancó sin problemas. Es simple de usar y los componentes se sienten de calidad.
- CliftonDonnellyReviewed in Australia on November 26, 2024
5.0 out of 5 stars keep you $$$battery alive!
Verified PurchaseBest trickle charger on tge market.
Saved my S$$$piral AGM starter battery for one year on trickle.
100% CCA still available for my rebuilt vehicle !!!
Worth every č̣ent !!!
- LadyBlueReviewed in the United States on June 18, 2025
5.0 out of 5 stars My favorite chargers
Verified PurchaseI love these chargers. I farm and have a large number of engines/batteries to maintain year round. Some engines are only used for a short part of the year so I keep trickle chargers on the batteries, sometimes nearly year round. Because of that I own many trickle chargers and have tried several brands. My favorite for years were Battery Tenders (and I still have several) but I think I like the Niko's even better. They charge reliably and will charge batteries that the Battery Tenders seem reluctant to give a charge. Intuitive operation and simple. I do have some glass matt batteries and like there is a setting specific for those as well. A small number of my batteries are 6 volt so I like the ability to use the same trickle charger for both 6 volt and 12 as needed. All that I have purchased to this date have functioned well and seem well made. Better terminal clamps compared to what comes on the Battery Tenders. I think these are a good buy and all that I have purchased have lasted for years.
- J. FraserReviewed in the United States on December 3, 2024
5.0 out of 5 stars Simple, well made smart trickle charger at a fair price.
Verified PurchaseThere is a reason the NOCO GENIUS smart car battery charger is so popular. It works well, it is very simple to operate and solves the major headache for car owners who must leave their vehicle unattended for weeks or months at a time.
It used to be when you turned off your vehicle and removed the key, all power was off and there was no drain on the battery. Not anymore, there are all kinds of things that always stay on now. If you have a newer vehicle, you know what I am talking about. I went away for just a couple weeks and when I returned my car would barely start. I didn't think too much of it but when I went away on a 6 week trip this past summer, I came home to a super dead battery in a 3-year-old car with 20K on it. Nothing worked, no lights, no locks, no trunk, nothing… I even had a very difficult time getting into the electronically assisted doors. Now to be honest, after a couple weeks away, my car sent me an email saying it was shutting down systems to save the battery. When I returned, I measured the battery voltage, and it said 3 volts, it was so dead. I put a charger on it overnight and the next day it was only 6 volts, and it still would not turn over. I was able to get it started with one of those new micro jump start devices that I remembered I had (amazing little devices) and I took it to the Lincoln dealer and they replaced the battery under warranty but said anytime I go away for longer than a week to put a trickle charge on it or remove one of the battery posts to prevent the battery from completely discharging but they really didn't like that idea and preferred the trickle charge because a bunch of electronic settings will need to be reset once you hook it back up. Moreover, I am seeing the latest luxury vehicles now are coming with two batteries, one just as a starting battery and a separate "house" battery to run all the electronic stuff that is running in the background. That is the way yachts do it. All these car apps that talk to the car via satellite, the various alarm, safety and convenience stuff will kill your battery if you don't regularly use your vehicle, it is that simple.
While this can charge your battery from a very low state, keep in mind it will take a very long time, it really is designed only to “maintain” your battery, and does not do an efficient job charging it from a dead state. Batteries require a charging “profile” depending on the type of battery, most have an initial heavy duty “bulk charge” phase followed by a “float charge” or a maintenance level. This charger only addresses the maintenance charger of about 1 amp or so.
So, what you want is a SMART trickle charger that is smart enough to know the battery type you have AND smart enough to know when to stop and start charging at a very low amperage just enough to keep your specific battery type at its optimum charge level for the longest lifespan. The NOCO GENIUS does just that. What I like about it the most is that it is super simple, so simple my wife can do it without freaking out about doing harm to anything. The other thing I like about this is the cost. It is very reasonable and on sale it is a screaming buy. Everyone needs this IMO. Get it and it will save you way more $ than it costs, as well as a massive headache when you come home from a vacation to a dead vehicle that will not budge, and you must arrange to have it serviced in your garage!
Positives:
• Effective trickle charger
• Simpe to connect and operate
• Will not do harm to your battery (or cause a fire) from overcharging
• Safe for long periods of unattended operation
• Reasonable cost
Negatives:
• Not the best charger for charging batteries from a very low state
• Will not “jump start” your vehicle
I think you will like this useful item, and it will provide many years of service for a modest price.
5 stars