Introduction
This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your Portronics Power Plus II Mini UPS. This device is designed to provide uninterrupted power to your 12V DC Wi-Fi router or broadband modem, ensuring continuous internet connectivity during power outages. It features automatic power switching and is built for simple plug-and-play installation.
Setup Instructions
Follow these steps to correctly install your Portronics Power Plus II Mini UPS:
- Unplug your Wi-Fi Router's Power Adapter: Disconnect the power adapter from your Wi-Fi router.
- Connect Router Adapter to UPS (IN): Plug your Wi-Fi router's power adapter into the 'IN' port of the Power Plus II Mini UPS.
- Connect UPS (OUT) to Wi-Fi Router: Connect the 'OUT' port of the Power Plus II Mini UPS to your Wi-Fi router using the provided DC cable.

Image: Step-by-step connection guide for the Power Plus II Mini UPS.
Compatibility
The Power Plus II Mini UPS supports devices requiring 12V DC and up to 3A current. It includes both 2.1 mm and 5.5 mm DC pins for broad compatibility.

Image: DC pin compatibility details for the Power Plus II Mini UPS.
This device is compatible with a wide range of router and modem brands, including but not limited to TP-Link, Cisco, ASUS, Tenda, Linksys, Netgear, ACT Fibernet, Excitel, YOU Broadband, Huawei, Gigatel, Spectranet, and D-Link.

Image: List of compatible router and modem brands.
Operating Instructions
Once connected, ensure the ON/OFF switch on the Power Plus II Mini UPS is in the 'ON' position. The device will automatically detect the power supply and provide continuous power to your router.

Image: Location of the ON/OFF switch on the Power Plus II Mini UPS.
Automatic Power Switching
The Power Plus II features zero-lag switching. In the event of a power cut, the device instantly switches to battery mode without any interruption to your internet connection. When grid power is restored, it seamlessly switches back to direct supply while recharging its internal batteries.
Protection Features
The Mini UPS is equipped with multiple protection mechanisms to ensure the safety and longevity of your devices:
- Zero Lag Switching: Ensures seamless transition between grid power and battery backup.
- Over-charging Protection: Prevents damage to the battery from excessive charging.
- Under Voltage Protection: Safeguards connected devices from low voltage conditions.

Image: Key protection features of the Power Plus II Mini UPS.
Battery Backup
The device provides up to 4 hours of backup power, depending on the current consumption of the connected Wi-Fi router. It is powered by 2 x 2000mAh Lithium Polymer batteries.
Maintenance
To ensure optimal performance and longevity of your Power Plus II Mini UPS, consider the following maintenance tips:
- Cleaning: Regularly wipe the device with a soft, dry cloth. Avoid using liquid cleaners or abrasive materials.
- Ventilation: Ensure the device is placed in a well-ventilated area to prevent overheating. Do not block any ventilation openings.
- Storage: If storing the device for an extended period, ensure it is fully charged and store it in a cool, dry place. Recharge periodically to maintain battery health.
- Environmental Conditions: Avoid exposing the device to extreme temperatures, direct sunlight, or high humidity.
Troubleshooting
If you encounter issues with your Power Plus II Mini UPS, refer to the following common troubleshooting steps:
- No Power to Router:
- Ensure the ON/OFF switch on the UPS is in the 'ON' position.
- Verify that the router's original power adapter is securely plugged into the UPS 'IN' port.
- Check that the DC cable from the UPS 'OUT' port is firmly connected to your router.
- Confirm that the wall outlet providing power to the router's adapter is functional.
- Short Backup Time:
- Backup duration depends on the power consumption of your router. Higher consumption will result in shorter backup times.
- Ensure the UPS has been fully charged before use.
- Router Restarts During Power Transition:
- The Power Plus II is designed for zero-lag switching. If restarts occur, ensure all connections are secure and the UPS is functioning correctly. Contact support if the issue persists.
For issues not covered here, please refer to the Support section.
Specifications
| Feature | Specification |
|---|---|
| Brand | Portronics |
| Model Number | POR-3159 |
| Battery Cell Composition | Lithium Polymer |
| Product Dimensions (D x W x H) | 11.7D x 7.4W x 5.5H Centimeters |
| Voltage | 12 Volts |
| Amperage | 3 Amps |
| Battery Charge Time | 4 Hours |
| Form Factor | Compact |
| Maximum Power | 36 Watts |
| Output Current | 3 Amps |
| Output Voltage | 12 Volts |
| Connector Type | DC |
| Number of Outlets | 1 |
| Battery Average Life (Runtime) | 4 Hours |
| Output Wattage | 36 Watts |
| Item Weight | 240 Grams |
| Enclosure Material | ABS Plastic |
Warranty
The Portronics Power Plus II Mini UPS comes with a 1-year warranty from the date of purchase. Please retain your purchase receipt for warranty claims. For detailed warranty terms and conditions, refer to the official Portronics website or contact customer support.
Support
For any assistance, technical support, or warranty-related queries, please contact Portronics customer support:
- Email: help@portronics.com
- Phone/WhatsApp: +91 9555-245-245
- Support Portal: https://support.portronics.com
Support hours are typically 10 AM - 6 PM (local time).

Image: Portronics Port-Care support details.