Power / Batteries & Chargers
UGREEN 120W DC UPS Battery Backup US3000 User Manual
Quick guide for the UGREEN 120W DC UPS Battery Backup (US3000). Learn how to connect your NAS, understand LED indicators, button operations, and safety precautions.
Table of contents
Manual images
Click an image to enlargeImportant Information
This device is designed exclusively for UGREEN NAS devices. It is not compatible with third-party NAS devices. The device comes with a built-in lithium-ion battery. To ensure optimal performance, charge the device within 3 months of purchase. The device is set to power-saving mode by default; connect it to a power source to exit this mode before first use.
Connection Instructions
- Power Off: Turn off your NAS and unplug its power adapter from the wall outlet.
- Connect to Power: Connect the UPS to a wall outlet using the power adapter originally provided with your NAS.
- Connect NAS: Connect your NAS to the UPS using the appropriate power cable.
Note: Ensure all data transfer operations are stopped before powering off the NAS to prevent data corruption.
Button Operations
- Power On / Mute: Click the button once.
- Power Off: Press and hold the button for 10 seconds.
- Power Saving Mode: Double-click the button. Note that the button will not function while in power-saving mode; connect the device to power to exit this mode.
LED Indicators and Buzzer
The device uses LED lights and buzzer sounds to communicate status:
- NAS powered by AC: Solid white light (100% battery) or flashing white light (charging).
- NAS powered by UPS (Power Outage): Solid red light (>20% battery) or flashing red light (<20% battery).
- Low Battery Warning: If battery is <20%, the device will emit 3 beeps every second. If the battery is critically low, it will emit 1 beep every second for 60 seconds.
Maintenance and Storage
- Cleaning: Use a dry, soft cloth or a screen cleaner designed for smartphones/computers. Do not use water.
- Storage: Store in a dry place. If storing for a long period, fully charge the device and enable power-saving mode by double-clicking the button to extend battery life.
Safety Warnings
- Do not disassemble, crush, or puncture the device.
- Keep away from heat sources, high temperatures, and high humidity.
- Do not immerse in water.
- If the battery appears swollen, stop using the device immediately.
- Keep out of reach of children.
- Dispose of the device and battery according to local laws and regulations.
Manufacturer information
UGREEN
Practical help
Common problems
Can I use this with a non-UGREEN NAS?
No, this product is designed exclusively for UGREEN NAS devices.
The button is not responding.
The device may be in power-saving mode. Connect the device to a power source to exit this mode.
What does the red flashing light and beeping mean?
The NAS is running on battery power (power outage) and the battery level is below 20%. Prepare to shut down the NAS.
Before use
- Ensure the NAS is powered off before connecting.
- Use the original power adapter that came with your NAS.
- Charge the device within 3 months of purchase.
- Connect the device to a power outlet to exit the default power-saving mode before first use.
Specs in practice
- Power Saving Mode
- A mode to reduce power consumption and extend battery life during long-term storage.
Images and diagrams
- The connection diagram illustrates the power flow: Wall Outlet -> UPS (DC IN) -> NAS (DC OUT).
Model compatibility
- Compatible only with UGREEN NAS devices.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.