Manufacturer | NOCO |
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Brand | NOCO |
Model | G4 |
Item Weight | 2.7 pounds |
Product Dimensions | 9.3 x 9.4 x 2.5 inches |
Item model number | G4 |
Is Discontinued By Manufacturer | Yes |
Manufacturer Part Number | G4 |
OEM Part Number | G4 |
NOCO Genius G4 6V/12V 4.4 Amp 4-Bank Battery Charger and Maintainer
Brand | NOCO |
Color | Multi |
Product Dimensions | 9.3"D x 9.4"W x 2.5"H |
Item Weight | 2.7 Pounds |
Input Voltage | 120 Volts |
About this item
- The most convenient way to charge and maintain multiple vehicles for extending battery life and year-round battery maintenance of your car, boat, truck, RV, lawnmower, or any other vehicle.
- Completely recharge smaller capacity batteries on motorcycles, atvs, snowmobiles, personal watercraft, scooters, and power wheels up to 40 amp-hours. Ip64 protection
- Works with all types of 6-volt and 12-volt lead-Acid batteries, including wet, gel, and AGM, or any common automotive, deep-cycle, marine, or maintenance-free battery.
- Keep your battery fully charged without worry or overcharge. Simply plug-in and let our advanced charging technology automatically monitor and maintain your battery.
- An optimized charge mode for safely charging and maintaining 12-volt lithium-ion batteries, and recommended with use on lithium batteries with an internal BMS.
- One of the most advanced and safest battery chargers, including spark-proof technology, and reverse polarity protection, plus backed by our 5-year and endless Accessories.
- Advanced diagnostics indication for damaged batteries.
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From the manufacturer
The NOCO Genius G4 is a 4-bank automatic battery charger and maintainer
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4 Chargers In OneCharges 6V & 12V lead-acid batteries (including AGM and more) and 12V Lithium. Repairs desulfated batteries, charges in cold conditions, and has four banks that operate independently with their own charge mode. |
DiagnosticsIntuitive visual diagnostic tool for detecting reverse polarity, low-voltage or damaged batteries. |
RecoveryApplies a high-voltage pulse charge when low-voltage, sulfation or lost capacity is detected. |
CANbusAutomatically enables the charging port to charge CANbus systems. |
Protects against reverse polarity, overcharging, open-circuits, short-circuits, and overheating.
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Maintenance PlusKeeps the battery fully charged without overcharging, indefinitely. |
OptimizationStabilizes internal battery chemistry for increased performance and longevity. |
InteractiveAlters the charging process based on organic battery feedback. |
Energy-SaveMinimizes energy consumption when full power is not needed. |
Product Description
NOCO Genius smart battery chargers are some of the safest and most advanced on the market. One of our best, the G4 4-Bank Battery Charger and Maintainer is designed to charge 12-volt lead-acid and lithium-ion batteries up to 40Ah. It can also effectively maintain automotive, marine, RV, powersport, lawn & garden and deep-cycle batteries. It chargers 2x faster than ordinary battery chargers, can repair damaged batteries and is designed for use with micro-hybrid start-stop vehicles and CANBUS electrical systems. Guided by an on-board microcomputer, the G4 monitors battery activity for safe and efficient charging, automatically minizes energy consumption and provides redundant levels of safety protection, including spark-proof technology, as well as reverse polarity and overcharge protection. It can remain safely connected 24/7, while its streamlined design makes it ultra-compact, portable, and incredibly lightweight. The G4 features external mounting holes and a rubberized base that avoids surface slipping and scratches, while remaining impact, UV and water resistant (IP65). Intuitive LED indicators provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode. Designed for use on 120-volt 50-60Hz electrical systems and includes X-Connect battery clamps with integrated eyelet terminals, as well as a 5-year limited . DC Cord- 60-Inches (16AWG), AC Cord- 60-Inches (18AWG).Charge up to four different batteries at the same time.
Product information
Technical Details
Additional Information
ASIN | B0068EV26I |
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Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #780,486 in Automotive (See Top 100 in Automotive) #6,623 in Jump Starters & Battery Chargers |
Date First Available | January 1, 2010 |
Warranty & Support
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This Item NOCO Genius G4 6V/12V 4.4 Amp 4-Bank Battery Charger and Maintainer | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | ||
Price | Currently unavailable. | $229.99$229.99 | $424.95$424.95 | -20% $99.95$99.95 List: $124.95 | $139.95$139.95 | -22% $69.95$69.95 List: $89.95 |
Delivery | — | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Value for money | 4.1 | 4.2 | 4.0 | 4.3 | 4.5 | 4.4 |
Easy to use | 4.5 | — | 4.5 | 4.4 | 4.7 | 4.6 |
Easy to install | — | 4.8 | 4.6 | 4.3 | 4.7 | 4.7 |
Water resistance | — | 4.8 | 4.8 | — | 4.5 | — |
Weatherproof | — | 4.6 | 4.9 | — | — | 4.3 |
Sold By | — | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
input voltage | 120 volts | 120 volts | 240 volts | 120 volts | 240 volts | 120 volts |
battery charge time | — | — | 1 hours | 10 hours | 1 hours | 10 hours |
specification met | — | — | UL, CEC, FCC | UL, CEC, FCC | UL, CEC, FCC | UL, CEC, FCC |
weight | 2.7 pounds | 7.2 pounds | 16.98 pounds | 3.99 pounds | 4.17 pounds | 1.59 pounds |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, ease of use, and battery life of the auto accessory. For example, they mention it works well, provides a full charge, and is simple to use. That said, opinions are mixed on connectivity and value.
AI-generated from the text of customer reviews
Customers like the quality of the auto accessory. They say it works well, is easy to use, and is reliable. Some customers also mention that the cables break at the ends. Overall, most are satisfied with the quality and portability of the product.
"...This provides a full charge. The case is very well made, water proof and self senses the battery type when you make contact with the battery...." Read more
"...I've had the G4 for a little while now and it does everything expected...." Read more
"...It is easily transportable, but many of the adaptors have questionably functionality and strength/longevity...." Read more
"...I will continue to buy NOCO products because they work well and they will take care of you if they break, albeit, you may have to be persistent to..." Read more
Customers like the battery charging of the auto accessory. They mention that it provides a full charge, and keeps their batteries happy. The charger is versatile and can charge any battery that powers their many toys. Customers also say that it saves them from having to make trips to the barn.
"...This provides a full charge. The case is very well made, water proof and self senses the battery type when you make contact with the battery...." Read more
"...The ability to charge whatever type battery is a must option for me because you never have the same type of battery as much as you would like to..." Read more
"...a lot in keeping the clutter off my workbench and provide a reliable maintenance for my batteries...." Read more
"Absolutely one of the best maintainers on the market. This unit has also brought back some old batteries I had that were finished...." Read more
Customers find the auto accessory easy to use. They mention it's simple to plug and play, and can maintain four batteries at once. They also appreciate the well-made instructions and the easy installation of the connectors and cables. They say it works well with multiple connections and is a wonderful time saver. Customers also say it'll charge your batteries quickly and safely.
"...The packaging is very nice, well made and instructions are well made...." Read more
"...Almost as big as my AGM battery but talk about smart. . .plug & play easy and can maintain four batteries at once...." Read more
"Pros: Easy to set up, adaptable to different battery types. Cons?..." Read more
"...Being able to charge 4 at once is a wonderful time saver and I've already noticed that how it charges seems to make all our batteries seem healthier..." Read more
Customers like the battery life of the auto accessory. They say it charges quickly, maintains all their batteries, and keeps them alive. Some say it's convenient and easy to use. Customers also mention that it can maintain four batteries at once and is perfect for storing them during long periods when you're not using them.
"...excited now knowing my cars will start when needed and the batteries are well cared for." Read more
"...plug & play easy and can maintain four batteries at once...." Read more
"...Works awesome. All four batteries are kept as maximum.Light indicators are easy to see and to identify. The multiple types of cords are great...." Read more
"...It is underpowered to charge a car battery. I like the fact that I don't need a bunch of chargers since I have multiple smaller charging use cases...." Read more
Customers find the weight of the auto accessory to be relatively compact, portable, and a great space saver. They also say the slim case works well and reduces clutter.
"...plug & play easy and can maintain four batteries at once. It's big so I'll probably wall mount it and create a charging station for my batteries..." Read more
"...Compared to the three older chargers I own, this system is relatively compact and has the ability to be mounted on a wall...." Read more
"...types of batteries, this has been a great unit allowing me to reduce the clutter and make battery maintenance a breeze...." Read more
"These NOCO units are the best. Very portable, rugged and reliable. I have the G1100 and G4 - both work excellent...." Read more
Customers are mixed about the connectivity of the auto accessory. Some mention it's built with quality wiring and connectors, easy to use, and comes with a great selection of cables. They also like the ability to connect into their battery tender pieces. However, others say the connectors are extremely fragile, somewhat useless, and break at the ends.
"...in this system; however, I've found that the included two terminal connectors are completely useless for my purposes...." Read more
"...You get 2 battery screw connectors for more permanent or long term terminal connections and you get two spring loaded alligator terminals for..." Read more
"This charger works fine, but the cables break at the ends they break off into the opposite cable and they are stupid expensive, way overpriced, I..." Read more
"...The charger comes with two 10' extension cords. (All cords have polar connectors for the charger end so you can't plug them in wrong.)..." Read more
Customers are mixed about the value of the auto accessory. Some mention it's well worth the money, while others say it'd be stupid expensive.
"...from my motors, you can buy additional extension cords for a very reasonable price, you can also daisy chain the extension cords to meet you..." Read more
"...break off into the opposite cable and they are stupid expensive, way overpriced, I will end up making my own, not appreciated, I have over $300 in..." Read more
"...Great product, great value." Read more
"...It is a little more expensive, but seems to be better quality than the other one...." Read more
Customers are dissatisfied with the ring terminal size of the auto accessory. They mention that the terminals are too small for the threaded battery posts, and the eyelet cables that are included are too short for boat or car batteries. Some say that the rem terminals do not fit on any of their marine batteries.
"...They are not the correct size for any battery I have attempted to charge thus far (four 12V norm, three 6V norm, and one 12V lithium)...." Read more
"...The problem is the eyelet cables that are included are too small for boat/car batteries. I had to drill them out to make them work...." Read more
"...for screwing on manually with a nut to your batteries but they don't fit a standard 12V, so if you want to use four banks, you need to buy two more..." Read more
"...The ring terminals are too small for the threaded battery posts. The battery posts measure 7.84mm/od. The ring terminals are only 6.53mm/id." Read more
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A few years ago I received a few small, cheap, knock-off single battery "tenders". Needless to say, they didn't work and probably led to the destruction of a battery in one of my cars.
I did some research to find out what was available and what were other car enthusiasts using? There seem to really be only two players in the market. The Noco was the only one that provided LED's to show the exact charge level. I LOVE this feature! The Noco was also the only one that provides spark-proof protection, but the built-in desulfator was the feature that helped to sell me.
I purchased the 4-bank G$ which came with a great selection of cables. I was able to park fours cars side-by-side and place this in between them. The two extra long extending cables I purchased did the trick to help bridge the gap.
The charger helped to revive two of the weaker batteries as expected.
I love the LED display that lets me know the condition of each battery every time I visit my cars while in storage. I am really excited now knowing my cars will start when needed and the batteries are well cared for.
Top reviews from other countries
UPDATE: Had 3 batteries hooked up to the G4 since November and the unit worked like a charm!... I couldn't be happier and recommend this to anyone who has a need to charge and or maintain batteries during the off season..
I filed a claim, and sent this one back with the return shipping label provided. 3 or 4 days later a new one came in the mail. I plugged it in, and low and behold, it worked!
I hooked up to 4 separate batteries that were to remain dormant over the winter. This Noma trickle charger did its job in keeping the batteries charged all winter. In the spring I hooked all batteries up to there respective ATV, boat, and motorcycle all 4 batteries performed like they should.
I was happy with my purchase and glad I went with the slightly more expensive Noma brand.