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NOCO Genius 12v 24v 20 Amp On-Board 2 Bank Marine Charger GEN2

Was: $249.95
Sale Price: $199.95
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Automatically will diagnose, recover (if necessary), charge, and maintain your batteries in the most efficient manner possible. Now that’s smart, Wicked smart!
This charger will NOT charge a single 24 Volt battery, but will charge two 12 volt batteries in series, as well as four 6 volt batteries in series.

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Product InformationStore Part Number: GEN2


The NOCO Genius GEN2 charger is an 8 step, fully automatic, 2 bank switch-mode battery charger which automatically determines the condition of your batteries before beginning its charge cycle. It will only charge when the batteries need it, and will fully maintain your battery when it is in storage or between uses. All of the Genius line of battery chargers are programmed for optimal battery charging and maintenance, with proprietary Rapid Charging Technology (RCT). The smart microprocessor and advanced high frequency design will charge batteries twice as fast as a conventional transformer-based marine charger, while always preventing overcharge. This assures you of maximum battery life and less downtime. Genius chargers also utilitize Variable Input Compensation, which means that your charger will work as it should, delivering its full, correct voltage and amperage, whether or not long extension cords or low AC power are used. 


  • 90% Energy Efficient, providing the best charge while wasting less energy than other chargers
  • Fully interactive, built in Micro Control Unit for decreased charge times
  • Variable Input Compensated
  • Fully sealed waterproof design rated IP68 enclosure, yet factory serviceable
  • Compact lightweight design allows for a smaller footprint than other chargers
  • Advanced 8-Step Design
  • 10 amps per bank x 2 output, 20 amps maximum output
  • Safe for AGM, Gel and Wet Cell Lead Acid batteries
  • RECOVERY MODE: Recovers deeply discharged & sulfated batteries with pulse charging
  • Waterproof & Easy Install
  • Optimal 3 Step Charging
  • Spark Free Hook Up
  • Reverse Polarity Protection
  • Short Circuit Protection
  • Overload Protection
  • Line Regulation
  • Load Regulation
  • Thermal Protection
  • Output Regulation
  • 3 year Warranty


NOCO Genius chargers are waterproof and fully automatic!

Tech Specs

  • Dimensions (LxWxH): 10.2 x 9.0 x 5.7 in
  • Weight: 6 lb
  • Shipping Weight: 11 lb
  • DC Output Amps: 10
  • Output Voltage Charging: 13.5v-14.4v DC
  • DC Output Voltage (No Load) approx.: 0 v when battery not detected
  • Absorption Voltage: 14.4 V
  • AC Input Amps: 2.0 A
  • Maximum AC Current @ 108 VAC: 1.5
  • Maximum AC Current @ 90 VAC: 1.5
  • AC Input Volts: 120 VAC
  • AC Input Volts Freq.: 50-60 Hz
  • AC Input Volts Range: 70-130 VAC
  • Max Inrush Current, Single Cycle: 2.0 Max
  • Float Current: 1000 mA
  • Typical Efficiency: 87%
  • Power Factor: 90%
  • Model: GEN2
  • Manufacturer: NOCO
  • Power Requirements: 110 W
  • Maximum Power Output, Continuous: 95 W
  • Maximum Power (+/- 3%) @ 25° C: 100 W
  • Maximum Output Amps Single Surge: 10.5 A
  • Maximum Input Current: 1.5 A
  • Charge Reset: Battery Voltage Threshold: Below 12.8 V /timed
  • Working Temperature: 0° to 50° C
  • Storage Temperature: -20° to +60° C
  • Over Temperature: Auto overtemp foldback
  • Ripple and Noise: 50 mA at 30 kHz
  • Enclosure: Polycarbonate, sealed and potted
  • Output Banks: 2
  • Output AC Lead: 5 ft
  • Output DC Lead: 6 ft
  • Recommended Use: marine, outdoor harsh environments
  • Regulatory Approval: ISO8846, USCG 33CFR1830-410, FCC part 15
  • Manufacturer Part #: GEN2
  • Made In: China

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Reviews and Ratings

3.00 Average
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Rated 3.00/5 Stars from 1 customer reviews.

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Advertising is misleading
Says 12 24 two bank but you have to use both banks to get 24 . So basically you only have one bank if charging 24 v trolling batteries. Was expecting to charge 12 starting battery and trolling battery.
***Note From BatteryStuff***
As indicated on the product page this will not charge a single 24 volt battery. In order to accomplish this you would need to utilize both 12v leads from the charger to each 12v battery that are in series to equal 24 volts. A NOCO GEN3, which is a 3-bank unit would be required to charge a 12v battery and a 24 volt battery bank.
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Written by on Sep 17, 2019. Verified Purchase

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Manuals & Tutorials


Data Sheet


Chargers Tutorial

Why does it read 13 volts?

Order Line: 1-800-362-5397
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Tech Help: 541-474-4421
Fax: 541-471-6014
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Grants Pass, OR 97526
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