1. Introduction and Overview
The Renogy Voyager 20A is a robust and versatile 20-amp Pulse Width Modulation (PWM) solar charge controller designed for off-grid solar systems. It is engineered to manage the power flow from your solar panels to your battery bank, ensuring efficient charging and protecting your batteries from overcharging and over-discharging. Its waterproof design makes it ideal for various outdoor applications, including RVs, trailers, boats, and yachts.

The Voyager 20A is compatible with both 12V and 24V battery systems and supports multiple battery types, including AGM, Gel, Flooded, and Lithium. Its user-friendly interface and comprehensive protection features ensure reliable and safe operation for your solar power setup.

2. Key Features
- 4-Stage PWM Technology: Equipped with advanced smart PWM technology for high charging efficiency, providing Bulk, Absorption, Float, and Equalization charging stages to protect the battery.
- IP67 Rated Waterproof: Designed for outdoor use, fully operational when exposed to water spray, rain, or condensation.
- Multiple Protections: Features intelligent protections against reverse polarity, overcharge, short-circuit, reverse current, overload, and over-discharge.
- Support Multiple Battery Types: Automatically senses 12V or 24V system voltage for Gel, AGM, or Flooded batteries. Includes a Lithium activation feature.
- Backlit LCD Display: Provides accurate and timely information including charging current, generated energy, temperature, battery voltage, and error codes.





3. Setup and Installation
Proper wiring is crucial for the safe and efficient operation of your solar system. Always connect the battery to the charge controller FIRST, before connecting the solar panels. This ensures the controller recognizes the battery voltage correctly.


3.1. Wiring Steps:
- Connect Battery: Loosen the battery negative terminal on the Voyager. Connect the negative post of your battery to the tray cable, then place the tray cable onto the negative terminal of the Voyager. Repeat for the positive terminal.
- Connect Solar Panel: Loosen the PV negative terminal on the Voyager. Place the adapter kit cable into the negative terminal. Repeat for the positive terminal.
For a visual guide on wiring and battery type selection, please watch the official product video below:
Video 1: Renogy new edition Voyager Waterproof Charge Controller. This video demonstrates the wiring process for the charge controller and how to select the correct battery type.
3.2. Battery Type Selection:
After connecting the battery, the Voyager will power on. To set the battery type:
- Tap the 'Amp/Volt' button until the battery voltage is displayed on the LCD.
- Hold down the 'Battery Type' button for approximately 5 seconds. The LCD will then flash the current battery type (e.g., GEL, FLD, LI).
- While the battery type is flashing, tap the 'Amp/Volt' button to cycle through the available battery types (AGM, GEL, FLD, LI).
- Once your desired battery type is displayed, tap the 'Battery Type' button again to confirm your selection.
4. Operating the Controller
The Voyager 20A features a backlit LCD display for easy monitoring of your system's status. The controller automatically detects 12V or 24V system voltage when paired with Gel, AGM, or Flooded batteries.


4.1. Monitoring the Display:
Tap the 'Amp/Volt' button to cycle through various display screens, which typically include:
- Battery Voltage (V)
- Charging Current (A)
- Generated Energy (kWh)
- Temperature (°C/°F)
- Error Codes (if any)
5. Maintenance
To ensure the longevity and optimal performance of your Renogy Voyager 20A, regular maintenance is recommended:
- Cleanliness: Keep the controller clean and free from dust, dirt, and debris. Use a soft, dry cloth for cleaning.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to power loss or damage.
- Environment: Although IP67 rated, avoid prolonged submersion or exposure to extreme conditions beyond its operating temperature range.
- Inspection: Inspect the unit for any signs of physical damage or wear.
6. Troubleshooting
If you encounter issues with your Renogy Voyager 20A, refer to the following common troubleshooting tips:
- No Display/No Power: Ensure the battery is properly connected and has sufficient voltage. Check all wiring for loose connections or damage.
- Not Charging: Verify that solar panels are connected correctly and receiving adequate sunlight. Check for any shading on the panels. Ensure the battery type is correctly set on the controller.
- Incorrect Readings: Confirm all connections are secure. If using a temperature sensor, ensure it is properly connected.
- Error Codes: Refer to the user manual (PDF link below) for a detailed list of error codes and their corresponding solutions.
7. Specifications
| Specification | Value |
|---|---|
| Display Type | LCD |
| Operating Temperature | 149 Degrees Fahrenheit |
| UPC | 810009713517 |
| Manufacturer | Renogy |
| Product Dimensions | 6.08 x 3.83 x 1.4 inches |
| Item Weight | 8.8 ounces |
| ASIN | B07YXZMKD2 |
| Country of Origin | China |
| Item model number | Voyager 20A PWM |
| Color | Black |
| Brand | Renogy |
| Voltage | 12 Volts |
8. Warranty and Support
Renogy products are designed for reliability and performance. For detailed warranty information and customer support, please refer to the official Renogy website or the user manual PDF.
You can download the full User Manual (PDF) for the Renogy Voyager 20A Solar Charge Controller here.
For additional support or inquiries, visit the Renogy Store on Amazon.





