1. Introduction and Overview
The Energizer Power Bank UE30058 is a high-capacity portable charger designed to provide reliable power for your electronic devices on the go. With an impressive 30,000mAh battery, it can extend the usage time of smartphones, tablets, and other USB-powered gadgets. This power bank features multiple output ports for simultaneous charging and an intuitive LCD display for real-time battery monitoring. Its compact design makes it an ideal companion for travel, work, or everyday use.

The Energizer Power Bank UE30058, a sleek black portable charger with a digital display showing '100' percent charge.
2. Product Features
- 30000mAh High Capacity: Provides up to 108 hours of usage for smartphones or 36 hours for tablets, making it suitable for extended use.
- Fast Charging with Multiple Outputs: Features 12W dual USB-A and one 15W USB-C output ports, allowing simultaneous charging of up to three devices efficiently. Supports pass-through charging.
- Dual Input Ports: Recharge the power bank using either USB-C or Micro-USB inputs for versatile and convenient recharging.
- Real-Time Power Monitoring: An integrated LCD display shows the current battery level and charging status, ensuring you are always aware of the remaining power.
- PowerSafe Management: Built-in safety features include digital display, short circuit protection, and overcharging protection for safe and reliable operation.

An image demonstrating the massive 30,000mAh capacity of the Energizer Power Bank, capable of providing up to 108 hours for smartphones, 36 hours for small tablets, and 24 hours for large tablets.

The Energizer Power Bank connected to and simultaneously charging a tablet, a smartphone, a smartwatch, and wireless earbuds, highlighting its triple output capability (dual USB-A and one USB-C) for 15W total output.

An illustration of the power bank's dual input ports, Micro-USB and USB-C, offering flexible options for recharging the power bank itself.

A close-up view of the power bank's smart LCD display, which provides real-time battery levels and charging status at a glance.

Diagram illustrating the PowerSafe Management system, which includes protections against over-current, temperature fluctuations, overcharging, and short circuits, ensuring safe and reliable operation.
Official Product Video
Official product video showcasing the features and benefits of the Energizer Power Bank UE30058, including its high capacity, multiple output ports, and safety features.
3. Setup
Initial Charging of the Power Bank
- Check Battery Level: Upon first use, check the LCD display to see the current charge level of the power bank.
- Connect to Power Source: Use the provided USB-C cable or a Micro-USB cable (not included) to connect the power bank's input port to a USB wall adapter (not included) or a computer's USB port.
- Charge Fully: Allow the power bank to charge until the LCD display shows '100', indicating a full charge. The initial charge may take several hours.
Connecting Devices for Charging
- Select Cable: Use your device's original charging cable or a certified compatible cable.
- Connect to Output Port: Plug one end of the charging cable into one of the power bank's output ports (USB-A or USB-C).
- Connect to Device: Plug the other end of the cable into your device's charging port. The power bank should automatically begin charging your device.
4. Operating Instructions
Charging External Devices
- Connect your device to any available output port (USB-A or USB-C). The power bank will detect the device and begin charging.
- The LCD display will show the current battery percentage of the power bank.
- You can charge up to three devices simultaneously using the available ports.
- The power bank supports pass-through charging, meaning you can charge your devices while the power bank itself is being recharged.
Recharging the Power Bank
- To recharge the power bank, connect a USB-C or Micro-USB cable to the corresponding input port on the power bank.
- Connect the other end of the cable to a suitable power source, such as a wall adapter or computer USB port.
- The LCD display will show the charging progress.
Understanding the LCD Display
- The digital LCD display shows the remaining battery percentage of the power bank (0-100%).
- When charging, the display will show the increasing percentage.
- When discharging (charging a device), the display will show the decreasing percentage.
5. Maintenance
- Storage: Store the power bank in a cool, dry place away from direct sunlight, extreme temperatures, and humidity.
- Cleaning: Use a soft, dry cloth to clean the surface of the power bank. Do not use harsh chemicals or abrasive materials.
- Battery Longevity: To maximize battery lifespan, avoid fully discharging the power bank frequently. It is recommended to recharge it when the battery level drops to around 20-30%.
- Avoid Physical Damage: Do not drop, puncture, or disassemble the power bank. This can damage internal components and void the warranty.
6. Troubleshooting
Common Issues and Solutions
- Power Bank Not Charging:
- Ensure the charging cable is securely connected to both the power bank's input port and the power source.
- Try a different charging cable or wall adapter.
- Verify the power source is active and providing power.
- Device Not Charging from Power Bank:
- Ensure the power bank has sufficient charge (check LCD display).
- Verify the charging cable is securely connected to both the power bank's output port and your device.
- Try a different charging cable or a different output port on the power bank.
- Some devices may require specific charging protocols; ensure compatibility.
- Slow Charging:
- Ensure you are using a high-quality cable and a compatible wall adapter for optimal charging speed.
- Charging multiple devices simultaneously may reduce the charging speed for each individual device.
- Power Bank Overheating:
- It is normal for the power bank to become slightly warm during charging or discharging.
- If it becomes excessively hot, disconnect it immediately and allow it to cool down. Do not use it if it remains excessively hot.
- Ensure proper ventilation and avoid covering the power bank during use.
The PowerSafe Management system is designed to protect against over-current, temperature fluctuations, overcharging, and short circuits. If the power bank stops functioning unexpectedly, these safety features may have been activated. Disconnect all devices and cables, and allow the unit to reset before attempting to use it again.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | UE30058 |
| Battery Capacity | 30000 Milliamp Hours (mAh) |
| Product Dimensions | 6.45 x 3.3 x 1.25 inches |
| Item Weight | 1.54 pounds |
| Connector Type | USB Type C, Micro USB (Input); USB Type C, USB Type A (Output) |
| Voltage | 5 Volts |
| Special Features | Digital Display, Short Circuit Protection, Over Charging Protection |
| Manufacturer | Tennrich International Corp. |
| Country of Origin | China |
8. Warranty and Support
The Energizer Power Bank UE30058 comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects and ensures reliable performance under normal use.
For technical support, warranty claims, or any product-related inquiries, please refer to the contact information provided on the product packaging or visit the official Energizer website for customer service details.
Please retain your proof of purchase for warranty validation.







