1. Introduction
This manual provides essential instructions for the UpBright 19V AC/DC Adapter, designed to power and charge Kyvol Cybovac E31, E30, and E20 robot vacuum cleaners. Please read this manual thoroughly before using the adapter to ensure proper function and safety.
2. Safety Instructions
- Ensure the input voltage of the adapter (100-240VAC, 50/60Hz) matches your wall outlet specifications.
- The adapter features Over Voltage Protection (OVP), Over Current Protection (OCP), and Short Circuit Protection (SCP) for safe operation.
- Do not expose the adapter to water or excessive moisture.
- Avoid dropping or subjecting the adapter to strong impacts.
- Keep the adapter away from heat sources and direct sunlight.
- Do not attempt to disassemble or modify the adapter.
- Always unplug the adapter from the wall outlet before cleaning or if it will be unused for an extended period.
3. Package Contents
The package includes:
- 1 x UpBright 19V AC/DC Adapter with charging cord and connector.

Image: The UpBright 19V AC/DC Adapter with its attached power cord and barrel connector.
4. Setup
- Locate the charging base for your Kyvol Cybovac E31, E30, or E20 robot vacuum cleaner.
- Connect the barrel connector of the UpBright AC/DC adapter into the designated power input port on the robot vacuum's charging base.
- Plug the adapter's wall plug into a standard electrical outlet (100-240VAC, 50/60Hz).
- Ensure all connections are secure before placing the robot vacuum on the charging base.
5. Operating Instructions
Once the adapter is properly connected to the charging base and a power outlet:
- Place your Kyvol Cybovac robot vacuum cleaner onto its charging base, ensuring the charging contacts align.
- The adapter will automatically begin supplying power to charge the robot vacuum's internal battery.
- Refer to your specific Kyvol Cybovac robot vacuum cleaner's manual for details on charging indicators and expected charging times.
6. Maintenance
- Keep the adapter and its cables clean and free from dust. Use a dry, soft cloth for cleaning.
- Avoid bending, twisting, or crimping the power cord excessively, as this can damage internal wires.
- Store the adapter in a cool, dry place when not in use.
- Regularly inspect the adapter and cable for any signs of damage, such as cuts, fraying, or exposed wires. Discontinue use if damage is found.
7. Troubleshooting
- No Power/Not Charging:
- Ensure the adapter is securely plugged into both the wall outlet and the charging base.
- Try plugging the adapter into a different wall outlet to rule out an issue with the power source.
- Verify that the robot vacuum cleaner is correctly positioned on its charging base, with charging contacts aligned.
- Robot Vacuum Not Holding Charge:
- Rechargeable batteries have a limited lifespan, typically 1 to 3 years. If the robot vacuum's battery is old or faulty, it may not accept a charge, which is not an issue with the charger itself. Consider replacing the robot vacuum's battery if it is old.
- Adapter Overheating:
- Unplug the adapter immediately. Ensure it is used in a well-ventilated area and not covered. If overheating persists, discontinue use and contact support.
8. Specifications
| Input Voltage | 100-240VAC, 50/60Hz |
| Output Voltage | 19VDC |
| Output Current | 0.5A - 0.6A (500mA - 600mA) |
| Wattage | 11.4 Watts |
| Protection Features | OVP (Over Voltage Protection), OCP (Over Current Protection), SCP (Short Circuit Protection) |
| Compatible Devices | Kyvol Cybovac E31, E30, E20 Robot Vacuum Cleaners |
| Product Dimensions | 4 x 3 x 2 inches |
| Item Weight | 2.08 ounces |
9. Warranty and Support
UpBright products are backed by a commitment to quality:
- Refund Policy: 30 days refund period from the date of purchase.
- Exchange Policy: 24 months exchange period for defective units.
For warranty claims or technical support, please contact UpBright directly. You can visit the official UPBRIGHT Store on Amazon for more information.

Image: Illustration of various international plug types (AU, EU, UK) and a warranty certificate, indicating global compatibility and product support.