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NOCO G4 Battery Charger
  • NOCO G4 Battery Charger
  • NOCO G4 Battery Charger
  • NOCO G4 Battery Charger
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NOCO Genius G4 Battery Charger

The NOCO Genius G4 Battery Charger is a smart, 7 Step, fully automatic switch-mode battery charger and maintainer with 4 independent battery banks. The G4 allows different battery sizes, voltages (6V or 12V), and chemistries to be charged at the same time safely and efficiently. The G4 is best for charging multiple small battery applications from 2.2-40Ah, such as Motorcycles, ATVs, Jet Skis or Snowmobiles. In addition to charging, the G4 can effectively maintain any 6V or 12V batteries in larger applications, such as Cars, RVs, Boats and Trucks. With 4 independent battery banks, the G4 is the best way to keep all of your vehicles maintained at the same time.


  • Optimized charge mode for cold weather
  • Returns to last selected mode when restarted
  • Automatically adjusts itself to changing current needs
  • Protects against reverse polarity, short circuit, open circuit, spark, overheat, overcurrent and overcharge
  • Safely charges any type of lead-acid battery including Wet, Gel, MF and AGM batteries
  • Plug-n-play connectors for easy accessory changes
  • Lightweight and compact
  • Charges batteries 2X faster than traditional linear battery chargers
  • 100% full charge even with varying A/C input voltages
  • Automatically shuts off if charger remains in Bulk charge mode for an extended period of time
  • Includes G4 Charger, 2x Battery Clamp Connectors, 2x Eyelet Terminal Connectors, 4x 10' foot Extension Cables, Manual, and User Guide

7-Step System:

Step 1: Diagnostics - Checks the battery voltage to make sure battery connections are good and the battery is in a stable condition before beginning the charge process.
Step 2: Recovery - Initializes the Recovery process, if needed, for deeply discharged or sulfated (desulfation) batteries by pulsing small amounts of current.
Step 3: Soft Start - Begins Bulk charging process with a gentle (soft) charge.
Step 4: Bulk - The Bulk charging process continues and returns 80% of the battery capacity. Indicated by the 25%, 50% and 75% CHARGE LEDs.
Step 5: Absorption - Brings the charge level to 90%. The battery charger will deliver small amounts of current to provide a safe, efficient charge and limit battery gassing.
Step 6: Trickle - Battery is fully charged and ready to use, indicated by the 100% CHARGE LED being a solid Green. In this step, the battery charger will only deliver enough current to keep the battery full. If the battery tells the charger that more current is needed, the battery charger will switch to Maintenance.
Step 7: Maintenance - Continuously monitors the battery voltage to determine if a maintenance charge should be initiated. If the terminal voltage falls below 6.4V (6V) and 12.8V (12V), the charger will start the Maintenance cycle until.

Product Style RevZilla Item # Manufacturer Product # Availability
NOCO G4 Battery Charger 918433 G4 In Stock: Ships within 24 hours


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NOCO G4 Battery Charger
Already Asked: 2 Questions, 2 Answers
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RevZilla Store asked: Why did you choose this?
Richard P J: I have 7 motorcycles and only two chargers. This will get me most of the way there! Oct 24, 2014
Ryan V asked: Are the connectors SAE standard? I.e. if I hard wire the included eyelet terminal connectors to my battery, are the other connecting ends standard SAE connectors? Mar 21, 2015
Answer this · Send to friends Good question? Yes (0) No (0)
Dustin F: No they are not. As far as I know, they will only fit the NOCO charger. They look similar to a Deutsch connector. Mar 25, 2015
Reply to Dustin Good answer? Yes (1) No (0)