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NOCO Genius GENM2, 2-Bank, 8-Amp (4-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer

4.7 out of 5 stars 1,373 ratings

Currently unavailable.

We don't know when or if this item will be back in stock.
Brand NOCO
Color Black
Product Dimensions 7.9 x 2.2 x 5.5 inches; 5.8 Pounds

About this item

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  • An 8 amp (4 amp per bank) on-board battery charger for charging and maintaining two 12-volt batteries independently.
  • Safely charge all types of lead-Acid batteries from 20-120ah, including wet, gel, AGM, and deep-cycle batteries.
  • Advanced safety protection featuring spark-proof technology, plus reverse polarity, thermal, ignition, and overcharge protection.
  • Rugged and waterproof construction capable of submersion down to 3-meters and rated ip68 and NEMA 6p.
  • One of the most advanced battery chargers in its class, which is certified to ul1236, ISO 8846, 33 CFR 183. 410, plus backed by a 5-year.
  • Built-in battery desulfator to recover worn-out batteries.
  • Saltwater-tested to combat corrosion.
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Minn Kota Digital On-Board Battery Chargers
NOCO Genius GEN2, 2-Bank, 20-Amp (10-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger And Battery Maintainer
Customer Rating 4.7 out of 5 stars (1373) 4.9 out of 5 stars (895) 4.8 out of 5 stars (245) 4.8 out of 5 stars (512) 4.8 out of 5 stars (555) 4.6 out of 5 stars (578)
Price Unavailable $129.95 $199.95 $189.95 $125.48 $149.95
Sold By Amazon.com Amazon.com Amazon.com Less Is Always More ✱AUTHORIZED SELLER✱ Batterysharks
Color Black Black Black|Blacks
Item Dimensions 7.9 x 2.2 x 5.5 inches 9.15 x 7.2 x 5.39 inches 10.28 x 9.25 x 6.06 inches 10.08 x 8.86 x 5.62 inches 7.48 x 11.5 x 3.98 inches 1 x 1 x 1 inches

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Product description

The GENM2 On-Board Battery Charger offers the perfect mix of high-technology and rugged construction. With a fully-sealed, waterproof housing, the GENM2 can be easily installed and mounted directly onto a variety of applications and specifically designed for tough marine environments. Its waterproof design is capable of withstanding submersion down to 3-meters for extended periods of time without failure, and rated IP68 and NEMA 6P, providing continuous operation in the most extreme environments. The GEN Series On-Board Battery Chargers have some of the most advanced charging technology in its class. Utilizing the latest topology and power design, it is one of the most compact and lightweight battery chargers. Its onboard processor is capable of detecting, diagnosing, recovering, charging and maintaining all types of lead-acid batteries. Safely charge Wet Cell (Flooded), Gel Cell, AGM and Deep-Cycle batteries with zero overcharge. Plus, it protects against reverse polarity, sparks, short circuits, open circuits, and thermal runaway. And the GEN Series On-Board Battery Chargers are completely automatic. It continuously monitors the battery - while detecting any potential battery problems - shutting off power when the battery is fully charged, but observing the battery for optimal battery maintenance. Not only does the GEN Series On-Board Battery Charger have advanced safety features, but it also been tested and certified by multiple third-party laboratories, including Underwriters Laboratories UL1236, ISO 8846 Marine Standards, and Ignition Protection US Coast guard 33 CFR 183. 410. And all of this is backed by our 5-Year Limited . Other commonly used search terms: 12v battery charger, boat accessories marine, marine accessories for boats, 3 bank marine battery charger, on board battery charger, 4 bank marine battery charger, deep cycle battery charger, rv battery charger, waterproof battery charger, waterproof boat battery charger, waterproof marine battery charger, noco boat battery charger, noco gen battery charger, on-board battery charger, battery charger for boat, noco onboard charger.


From the manufacturer

marine battery charger, onboard battery charger, onboard battery charger 1 bank marine battery charger, onboard battery charger, onboard battery charger 2 bank marine battery charger, onboard battery charger, onboard battery charger 1 bank marine battery charger, onboard battery charger, onboard battery charger 2 bank marine battery charger, onboard battery charger, onboard battery charger 3 bank marine battery charger, onboard battery charger, onboard battery charger 4 bank
Model GENM1 GENM2 GEN1 GEN2 GEN3 GEN4
Banks 1 2 1 2 3 4
Amps Per Bank 4A 4A 10A 10A 10A 10A
Voltage 12V 12V 12V 12V 12V 12V
Total Amp Output 4A 8A 10A 20A 30A 40A
IP68 Waterproof

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Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,373 global ratings
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Top reviews from the United States

Reviewed in the United States on August 15, 2017
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5.0 out of 5 stars Highly satisfied - brought a deep cycle battery back to life
By A. McLeland on August 15, 2017
I bought this to replace an old "World's Foremost Outfitter" store brand charger that went kaput and managed to pull my two month old deep cycle battery down to 4 volts. I was concerned the battery was toast. I shopped for a decent two bank charger that would condition batteries to help with sulfation, and landed on this one. Based on cost and reviews I went for it.

The deep cycle battery was too dead for this charger to initially detect it, so I had to hook it up to a "dumb" charger for about 24 hours to get the voltage high enough for this charger to detect it and start charging. Once it detected it, I let it sit. It took about 48 hours to get from 12 volts to fully topped off and conditioned at 13v+, but it pulled it off, and the next day I took the boat out and got a full day of trolling off of that battery. Super duper satisfied. Now when I plug it in after a trip, the batteries are topped off overnight.

Side note: one review mentioned a concern about the waterproof nature of this product. I was curious about that so I took the rear cover off. The inside of the unit is completely sealed with epoxy potting compound so I'm 100% confident that it is waterproof.
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102 people found this helpful
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Reviewed in the United States on April 17, 2018
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74 people found this helpful
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Reviewed in the United States on July 11, 2017
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139 people found this helpful
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Reviewed in the United States on September 10, 2016
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5.0 out of 5 stars I did a great deal of research on this item and chose this ...
By Flori-duh Billy on September 10, 2016
I installed this on a 2015 Everglades 230cc to charge my 2 Optima blue tops on separate banks. One starting battery on a bank and one deep cycle battery on a separate bank. You will read others trying to charge 4 or more batteries with this item calling a "bank" more than one battery wired in series or parallel, which is a traditional definition of a "battery bank". NOCO designed these to charge ONE BATTERY per "bank". A "bank" being ONE BATTERY per NOCO definition. I know...... confusing.... If you have 4 batteries on what you consider a traditional "2 bank" set-up, then spring for the "NOCO 4 bank" charger as they consider a "bank" ONE BATTERY!!
I did a great deal of research on this item and chose this over any other "trickle-charger", even over the Optima one. It is VERY EASY to install and can be installed in any manner as far as upside down, right side up, whatever, so you have options. It came packaged well with all the instructions. I suggest buying the NOCO power port receptacle that installs on the interior of the boat to assist with the ease of connecting the power cord from your home or dock to this unit. It sells separately for about $16. Other than that all you need is simple tools and some zip ties.
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106 people found this helpful
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Reviewed in the United States on July 31, 2018
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35 people found this helpful
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Reviewed in the United States on September 1, 2018
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12 people found this helpful
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Top reviews from other countries

Cody S
5.0 out of 5 stars Good charger. Would buy again if needed.
Reviewed in Canada on February 21, 2019
Verified Purchase
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5.0 out of 5 stars Good charger. Would buy again if needed.
Reviewed in Canada on February 21, 2019
been charging with no issues for the past few months. I use it on my new diesel truck during long periods of standby time. And battery saver mode doesn’t pop up anymore.
Larger than I thought it would be and heavy as hell. Feels like a very solid quality product.
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4 people found this helpful
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Shannon
1.0 out of 5 stars Dead after 3mths. Warranty $90 shipping and fees to have looked at.
Reviewed in Canada on September 5, 2020
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One person found this helpful
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Allen V
5.0 out of 5 stars Great for a diesel in the winter.
Reviewed in Canada on December 4, 2019
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5.0 out of 5 stars Great for a diesel in the winter.
Reviewed in Canada on December 4, 2019
Really like product. Took a bit to figure out how/where to mount under my hood but got it figured out and had to fabricate a bracket. It’s in my Diesel F350 here in northern Alberta. So far so good and keeps my batteries fully charged. A great addition to my truck.
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2 people found this helpful
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Ryan O
4.0 out of 5 stars Just works...
Reviewed in Canada on October 11, 2019
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4.0 out of 5 stars Just works...
Reviewed in Canada on October 11, 2019
I have never used a battery maintainer before but I now had a deep cycle RV battery and a deep cycle boat battery that were going to be sitting in my garage over winter. I did my research, read the reviews, and decided on the NOCO brand and am not disappointed. I will be looking to purchase individual maintainers for both that I can mount directly to the boat and trailer batteries to keep them in shape during normal use over the summer.
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Alex Combe
5.0 out of 5 stars Great unit. Would buy over and over.
Reviewed in Canada on May 2, 2018
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One person found this helpful
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