1. Introduction
The APC Smart-UPS 750VA LCD 230V (Model SMT750I) is an Uninterruptible Power Supply (UPS) designed to provide reliable power protection for electronic equipment. It safeguards against power outages, voltage fluctuations, and surges, ensuring continuous operation and protecting sensitive devices. This manual provides essential information for the safe and efficient use of your UPS.
2. Safety Information
Please read and understand these instructions carefully before installing or operating the UPS.
- This UPS is intended for indoor use only.
- Do not operate this UPS in direct sunlight, in contact with fluids, or where there is excessive dust or humidity.
- Connect the UPS power cable directly to a wall outlet. Do not use extension cords or surge protectors.
- The UPS contains internal batteries that are not user-serviceable. Refer to qualified service personnel for battery replacement.
- Ensure proper grounding for all connected equipment.
- In case of emergency, press the OFF button and disconnect the UPS from the AC power supply.
3. Package Contents
Verify that all components are present upon unpacking:
- APC Smart-UPS 750VA LCD 230V Unit
- USB Communication Cable
- Serial Communication Cable
- Documentation CD
- Safety Information and Warranty Guide
- Power Cords (quantity may vary by region)
4. Setup
4.1 Unpacking and Inspection
Carefully remove the UPS from its packaging. Inspect the unit for any shipping damage. If damage is found, notify the carrier and your dealer.
4.2 Connecting the Battery
The UPS is shipped with the battery disconnected for safety. To connect the battery:
- Locate the battery connector on the rear panel of the UPS.
- Remove the battery cover or pull out the battery tray slightly (refer to specific model instructions if different).
- Connect the battery terminals firmly. Ensure a secure connection.
- Replace the battery cover or push the battery tray back into place.
4.3 Connecting to Utility Power
Plug the UPS power cord into a grounded 230V AC outlet. The UPS will begin charging its battery. Allow the battery to charge for at least 24 hours before initial use to ensure maximum runtime capacity.
4.4 Connecting Equipment
Connect your electronic devices to the output receptacles on the rear of the UPS. Prioritize critical equipment that requires battery backup. The UPS provides both battery backup and surge protection for connected devices.

Figure 1: Rear panel of the APC Smart-UPS 750VA LCD 230V, illustrating the various power outlets, communication ports (USB, UPS Monitoring), and the battery connector. Ensure all connections are secure.
5. Operation
5.1 Front Panel and LCD Display
The front panel features an LCD display and control buttons for monitoring and configuring the UPS. The LCD provides real-time information on UPS status, load, battery charge, and various settings.

Figure 2: Front view of the APC Smart-UPS 750VA LCD 230V, highlighting the intuitive LCD interface and control buttons for easy monitoring and configuration.
5.2 Control Buttons
- Power On/Off: Press to turn the UPS on or off.
- Menu/Escape: Navigates through menu options or exits a menu.
- Up/Down Arrows: Scrolls through menu options or adjusts settings.
- Enter: Selects a menu option or confirms a setting.
5.3 Initial Startup
After connecting the battery and utility power, press the Power On button. The UPS will perform a self-test and then display its operational status. The LCD will show input voltage, output voltage, load percentage, and battery charge level.
5.4 Power Management Software
For advanced monitoring and control, connect the UPS to a computer using the provided USB cable. Install the APC PowerChute software (available on the documentation CD or APC website) to configure shutdown parameters, view event logs, and perform scheduled self-tests.
6. Maintenance
6.1 Battery Replacement
The UPS uses a 12V lead-acid battery. Batteries typically last 3-5 years depending on usage and environmental conditions. When the battery needs replacement, the UPS will indicate a battery fault. Contact APC customer support or a certified service technician for battery replacement to ensure safety and proper function.
6.2 Cleaning
Periodically clean the exterior of the UPS with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure ventilation openings are free from dust and debris to prevent overheating.
6.3 Storage
If storing the UPS for an extended period, ensure the battery is fully charged. Disconnect the battery and store the unit in a cool, dry place. Recharge the battery every 3-6 months to prevent deep discharge and prolong battery life.
7. Troubleshooting
This section addresses common issues you might encounter with your UPS.
| Problem | Possible Cause | Solution |
|---|---|---|
| UPS does not turn on | Battery disconnected or discharged; No utility power. | Ensure battery is connected; Check utility power connection; Allow battery to charge. |
| UPS beeps continuously | On battery power; Overload condition; Low battery. | Check utility power; Reduce connected load; Allow battery to charge. |
| Battery icon flashing | Battery fault or nearing end of life. | Perform a self-test; If fault persists, consider battery replacement. |
| Connected equipment loses power | UPS overload; Battery fully discharged. | Reduce connected load; Allow battery to recharge. |
For more complex issues or error codes displayed on the LCD, refer to the detailed troubleshooting section in the full product documentation or contact APC technical support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | SMT750I |
| Capacity | 750VA / 500W |
| Input Voltage | 230V |
| Output Voltage | 230V |
| Frequency | 50/60 Hz (auto-sensing) |
| Battery Type | Lead Acid, 12V (1 battery required) |
| Dimensions (H x W x D) | 5.43 x 6.34 x 14.29 inches (13.8 x 16.1 x 36.3 cm) |
| Weight | 29 pounds (13.15 kg) |
| Color | Black |
| Interface Ports | USB, SmartSlot |
9. Warranty and Support
9.1 Warranty Information
APC provides a standard warranty for this product. The warranty period typically covers defects in materials and workmanship under normal use. Specific warranty terms and conditions may vary by region and purchase date. Please refer to the warranty card included with your product or visit the official APC website for detailed information.
9.2 Technical Support
If you encounter any issues or have questions regarding your APC Smart-UPS, please contact APC Technical Support. Have your product model number (SMT750I) and serial number ready when contacting support. Support contact information can typically be found on the APC website or in your product documentation.
For additional resources, visit the APC official website.





