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NOCO Genius 12v 4 Amp Marine On-Board Battery Charger GENM1

Was: $89.95
Sale Price: $69.95
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Product InformationStore Part Number: GENM1


The NOCO GENM1 On-Board Battery Charger is a rugged and compact waterproof charger for 12V lead acid batteries. It can be mounted onto virtually any vehicle, such as a boat, car, tractor, or RV. Safe to leave connected indefinitely. The GENMini interactively diagnoses, recovers, and charges Wet, Gel, MF and AGM batteries chemistries from 20-120 Ah and maintains all battery sizes.


  • Fully Interactive - Automatically adjusts itself to changing current needs
  • Rapid Charging Technology - Charges batteries 2X faster than traditional linear battery chargers
  • Multiple Battery Chemistry - Safely charges Wet, Gel, MF & AGM batteries
  • Specific Gravity Optimization - A stabilizing charge that optimizes the specific gravity of a battery for increased performance
  • Designed For Safety - Reverse polarity, short circuit, open circuit, spark proof, overheat, overcurrent & overcharge
  • Variable Input Compensated - 100% full charge even with varying A/C input voltages
  • Abnormality Protection - Automatically shuts "off" if charger remains in Bulk charge mode for an extended period of time
  • Ignition Protected - Non-igniting and temperature controlled for safe and worry-free operation
  • HF/HE Switch Mode Design - High-frequency, high-efficiency for lightweight, compact charger
  • Recovery Mode - Recovers deeply discharged & sulfated batteries with pulse charging
  • Waterproof - 100% completely sealed. Protects our units from the most extreme environments and rated at IP68

Tech Specs

  • Dimensions (LxWxH): 7.9 x 5.5 x 2.2 in
  • Weight: 3.3 lb
  • Shipping Weight: 5 lb
  • Input Voltage AC: 110-120 VAC, 50-60 Hz
  • Working Voltage AC: 70-130 VAC, 50-60 Hz
  • Nominal Voltage: 12 VDC
  • Efficiency: 90%
  • Charging Voltage: 14.4 V
  • Back Current Drain: <5 mAh
  • Ripple: <2%
  • Model: GENM1
  • Manufacturer: NOCO
  • Charger Type: 8 Step, Fully Automatic, Switch-Mode
  • Type of Batteries: 12 V Lead-Acid
  • Battery Chemistries: Wet, Gel, MF & AGM
  • Battery Capacity: 20-120 Ah; Maintains All Battery Sizes
  • Housing Protection: IP 68
  • Cooling: Natural Convection
  • Output Leads (Length): 6.3 Feet
  • AC Cord (Length): 6.0 Feet
  • Warranty: 5 Years
  • Manufacturer Part #: GENM1
  • Made In: China

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Reviews and Ratings

5.00 Average
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Rated 5.00/5 Stars from 1 customer reviews.

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Exactly what I needed
Excellent, charger/tender fir all battery’s. Decided to install this single bank unit on a skid steer . I don’t used the machine often, but now I know the battery will be at full charge when the work begins. I also, have the 3 bank model in my vas’s boat. Extremely satisfied!
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Written by on Jun 01, 2020. Verified Purchase

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Manuals & Tutorials


Data Sheet


Order Line: 1-800-362-5397
M–F 6am–5pm PST
Tech Help: 541-474-4421
Fax: 541-471-6014
276 Tech Way, Suite A
Grants Pass, OR 97526
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