1. Product Overview
The CyberPower CP1350PFCLCD is a mini-tower Uninterruptible Power Supply (UPS) system designed to provide battery backup and surge protection. It features sine wave output, making it compatible with active Power Factor Correction (PFC) and conventional power supplies. This unit safeguards desktop computers, workstations, networking devices, and home entertainment systems from power fluctuations and outages. An advanced multifunction color LCD panel provides real-time status and alerts, with a tilt feature for optimal viewing.
The UPS incorporates Automatic Voltage Regulation (AVR) to stabilize incoming utility power, correcting minor voltage fluctuations without engaging the battery, thereby extending battery life.

Figure 1: Front view of the CyberPower CP1350PFCLCD UPS, showing the LCD display and control buttons.
2. Setup
2.1 Unpacking and Initial Inspection
Carefully remove the UPS from its packaging. Inspect the unit for any signs of damage. Ensure all components, including the power cord and user manual, are present.
2.2 Battery Connection
The UPS battery may be disconnected for shipping. To connect the battery:
- Locate the battery compartment cover, typically at the bottom or side of the unit.
- Remove the cover by sliding it or unscrewing retaining screws.
- Connect the internal battery cables (red to red, black to black) as indicated. Ensure connections are secure.
- Replace the battery compartment cover.
2.3 Connecting to Power and Devices
Plug the UPS power cord into a grounded wall outlet. Connect your computer, monitor, and other critical equipment to the battery backup and surge-protected outlets on the rear of the UPS. Non-critical devices can be connected to surge-only outlets.

Figure 2: Rear view of the UPS, showing 12 NEMA 5-15R outlets (six battery backup & surge protected, six surge protected), network ports, USB, and serial port.
3. Operating Instructions
3.1 Powering On/Off
To power on the UPS, press and hold the power button on the front panel until the LCD screen illuminates. To power off, press and hold the power button again until the display turns off.
3.2 LCD Display and Controls
The multifunction color LCD panel displays real-time information about the UPS status. Use the 'DISPLAY' button to cycle through various screens, including:
- Input Voltage: Shows the incoming utility power voltage.
- Output Voltage: Displays the voltage supplied by the UPS to connected devices.
- Battery Capacity: Indicates the current charge level of the battery.
- Current Load: Shows the power consumption of connected devices.
- Estimated Run Time: Provides an approximation of how long the UPS can power connected devices during an outage.
- Event Log: Records power events such as outages or surges.
The screen can be tilted up to 22 degrees for better viewing angles.

Figure 3: Close-up of the LCD panel displaying various status icons and real-time data.
3.3 Automatic Voltage Regulation (AVR)
The UPS automatically activates AVR to correct minor voltage fluctuations (sags or surges) without switching to battery power. This ensures a stable power supply to your devices and prolongs battery life.
3.4 USB Charging Ports
The front panel includes USB-A and USB-C ports for convenient charging of mobile devices, even during a power outage.
4. Maintenance
4.1 Battery Replacement
Over time, UPS batteries will degrade and require replacement. The CP1350PFCLCD uses two 12V sealed lead-acid batteries. The LCD panel may display an error code (e.g., E21) or a 'REPLACE' icon when the battery needs attention.
Procedure for Battery Replacement:
- Ensure the UPS is turned off and disconnected from the wall outlet.
- Remove the battery compartment cover (usually secured by two Phillips screws).
- Carefully disconnect the battery terminals (red and black) from the old batteries. Note the orientation for proper re-connection.
- Remove the old batteries. They may be snug and require gentle nudging.
- Insert the new batteries, ensuring they fit correctly.
- Connect the new battery terminals (red to red, black to black). A small spark may occur during the final connection; this is normal.
- Replace the battery compartment cover and secure it with screws.
For a visual guide on battery replacement, refer to the official product video below:
Video 1: CyberPower PFC Compatible Pure Sine Wave Tower UPS - This video demonstrates the features and setup of a CyberPower UPS, including aspects relevant to battery maintenance.
4.2 General Care
Keep the UPS in a well-ventilated area, free from dust and moisture. Avoid placing it near heat sources. Regularly check for any loose connections or signs of wear.
5. Troubleshooting
If your UPS is not functioning as expected, refer to the following common issues:
| Problem | Possible Cause | Solution |
|---|---|---|
| UPS does not turn on | Battery not connected or discharged | Ensure battery is connected. Charge UPS for at least 8 hours. |
| UPS beeps continuously | Overload or low battery | Reduce connected load. Allow battery to charge. |
| Error Code E21 on LCD | Battery fault or end-of-life | Replace the battery as per maintenance instructions. |
| No power to outlets | Circuit breaker tripped | Press the circuit breaker reset button on the rear panel. |
6. Specifications
- Model: CP1350PFCLCD
- Capacity: 1350VA / 880W
- Topology: Line Interactive with PFC Sinewave Output
- Outlets: 12 NEMA 5-15R (6 Battery Backup & Surge Protected, 6 Surge Protected)
- Input Voltage: 120 Volts
- Battery Type: Sealed Lead Acid (2 x 12V batteries included)
- Automatic Voltage Regulation (AVR): Yes
- Display: Multifunction Color LCD Panel
- Dimensions: 14.2 x 3.9 x 10.4 inches
- Item Weight: 20.3 pounds
7. Warranty and Support
The CyberPower CP1350PFCLCD comes with a three-year warranty, which includes coverage for the batteries. Additionally, it is backed by a $425,000 Connected Equipment Guarantee, providing peace of mind for your connected electronics.
For further support, troubleshooting, or warranty claims, please visit the official CyberPower website or contact their customer service.





