1. Introduction
The NOCO Genius G4 is an advanced 4-bank battery charger and maintainer designed for 6-volt and 12-volt lead-acid and lithium-ion batteries up to 40 Amp-hours. This device is engineered to provide safe and efficient charging, extending battery life and ensuring year-round battery maintenance for various vehicles and equipment. It incorporates an on-board microcomputer to monitor battery activity, minimize energy consumption, and offer multiple safety protections.
2. Key Features
- Multi-Bank Charging: Simultaneously charges and maintains up to four separate 6V/12V batteries.
- Versatile Battery Compatibility: Works with all types of 6-volt and 12-volt lead-acid batteries (Wet, Gel, AGM) and 12-volt lithium-ion batteries.
- Advanced Charging Technology: Charges up to 2x faster than ordinary chargers and can repair damaged batteries.
- Zero Overcharge Protection: Safely remains connected 24/7 without risk of overcharging.
- Safety Features: Includes spark-proof technology and reverse polarity protection.
- Durable Design: Impact, UV, and water-resistant (IP65) with external mounting holes and a rubberized base.
- Intuitive LED Indicators: Provides visual state-of-charge feedback and diagnostic information.
3. What's in the Box
Image: Contents of the NOCO Genius G4 package.
- G4 4-Bank Advanced Battery Trickle Charger Maintainer
- Battery Clamps (X-Connect)
- Eyelet Terminals (Integrated with X-Connect clamps)
- Extension Cables
- User Guide
- 5-Year Limited Warranty Information
4. Setup
Before connecting the charger, ensure the area is well-ventilated and free from flammable materials. Always connect the charger to the battery terminals first, then plug the AC cord into a power outlet.
- Identify Battery Type: Determine if your battery is 6V or 12V, and its chemistry (Lead-Acid, AGM, Gel, or Lithium-ion).
- Connect to Battery: Attach the X-Connect battery clamps or eyelet terminals to the appropriate battery posts. Ensure a secure connection: red clamp/eyelet to the positive (+) terminal and black clamp/eyelet to the negative (-) terminal. The charger features reverse polarity protection to prevent damage from incorrect connections.
- Connect to Power: Plug the AC power cord into a 120-volt 50-60Hz electrical outlet.
- Select Charging Mode: Press the 'MODE' button on the charger to cycle through the available charging modes until the correct mode for your battery type is selected. The intuitive LED indicators will confirm the selected mode.
Image: NOCO Genius G4 connected to an ATV battery.
5. Operating Modes and Indicators
The G4 charger features various operating modes and LED indicators to provide real-time status and diagnostic information.
5.1 Charging Modes
- 12V NORMAL: For 12-volt Wet, Gel, Enhanced Flooded, and Maintenance-Free batteries.
- 12V AGM: For 12-volt AGM batteries.
- 12V LITHIUM: For 12-volt Lithium-Ion batteries, recommended for those with an internal BMS.
- 6V NORMAL: For 6-volt Wet, Gel, Enhanced Flooded, and Maintenance-Free batteries.
- REPAIR Mode: An advanced battery recovery mode for repairing damaged or sulfated batteries.
5.2 LED Indicators
The charger uses intuitive LED indicators to communicate the charging status and any potential issues:
- Pulsing Red LED: Indicates the battery is less than 75% charged and is actively charging.
- Pulsing Green LED: Indicates the bulk charge is complete, and the battery is being optimized for extended life.
- Solid Green LED: The battery is 100% charged and the charger is in maintenance mode.
- Solid Red LED (Error): Indicates a problem such as reverse polarity, a short circuit, or a battery that is too low to charge.
Image: NOCO Genius G4 LED indicators for charging and maintenance.
6. Charging Times
The following table provides approximate charging times for various battery sizes:
Image: Approximate charging times for various battery sizes.
| Battery Type | Battery Size (Ah) | Approximate Time to Charge (hours) |
|---|---|---|
| Motorcycle | 18 | 8 |
| Snowmobile | 20 | 9 |
| ATV | 30 | 14 |
| Personal Watercraft | 30 | 14 |
| Lawn Mower | 40 | 18 |
7. Maintenance
The NOCO Genius G4 is designed for year-round battery maintenance. Once a battery is fully charged, the charger automatically transitions into a maintenance mode, providing optimal charge to keep the battery healthy without overcharging. It can remain safely connected 24/7, ensuring your batteries are always ready for use.
8. Troubleshooting
The G4 includes advanced diagnostic features to help identify and resolve common issues:
- Spark-Proof Technology: Prevents sparks during connection, enhancing safety.
- Reverse Polarity Protection: Automatically detects and prevents damage if battery connections are reversed.
- Overcharge Protection: Prevents battery damage from excessive charging.
- Bad Battery Indication: The charger can detect if a battery is too damaged to accept a charge, indicated by specific LED patterns (refer to the user guide for detailed patterns).
- Repair Mode: Utilize the REPAIR mode for deeply discharged or sulfated batteries to attempt recovery.
9. Specifications
Image: Dimensions of the NOCO Genius G4 charger.
| Specification | Value |
|---|---|
| Model | G4 |
| Amperage | 4.4 Amps (1.1A per bank) |
| Output Voltage | 6 Volts (DC), 12 Volts (DC) |
| Product Dimensions | 9.3 x 9.4 x 2.5 inches (23.6 x 23.9 x 6.4 cm) |
| Item Weight | 2.7 pounds (1.22 kg) |
| AC Cord Length | 60 inches (18AWG) |
| DC Cord Length | 60 inches (16AWG) |
| Water Resistance | IP65 |
10. Warranty and Support
The NOCO Genius G4 4-Bank Battery Charger and Maintainer comes with a 5-year limited warranty. For warranty claims, technical support, or additional product information, please refer to the official NOCO website or contact their customer service directly. Ensure you retain your proof of purchase for warranty validation.