1. Introduction
The ZEBRONICS EnergiTank 20MR1 is a high-capacity 20000 mAh metal power bank designed to provide efficient and rapid charging for your mobile devices. Featuring 22.5W Super Fast Charging with PD 3.0 (PPS) support, dual Type-C ports, and a USB-A port, it offers versatile connectivity for various smartphones, tablets, and other compatible gadgets. Its sleek metal design ensures durability and a premium feel, while integrated safety features protect your devices during charging.

Image 1.1: The ZEBRONICS EnergiTank 20MR1 power bank, showcasing its compact size and metal finish when held in hand.
2. Product Features
- High Capacity: Equipped with a 20,000mAh battery for extended charging capabilities.
- Premium Metal Outlook: Features a compact, stylish metal body with patterned edges for enhanced grip and a premium aesthetic.
- Powerful Output: Delivers a maximum output of 22.5W, suitable for fast charging a wide range of smartphones and tablets.
- Multiple Output Ports: Includes a DC 5V/3A, 9V/2.22A, 12V/1.67A, 5~11V/2A PPS Type-C1 Output and a USB-A port (DC 5V/3A, 9V/2A, 12V/1.85A) for charging multiple devices simultaneously.
- Versatile Input Connectivity: Supports DC 5V/3A, 9V/2A, 12V/1.5A Input via Type-C1 / C2 ports.
- Rapid Charging Technology: PD3.0 (with PPS) Type-C output ensures quick and efficient charging.
- Advanced Safety Protection: Built-in safeguards against overcharge, overload, and short-circuiting for a secure charging experience.
- LED Indicator: Provides clear information on the remaining battery percentage.

Image 2.1: The power bank highlighting its 20000 mAh capacity and 22.5W maximum output for fast charging.

Image 2.2: A detailed view of the power bank's sleek design, LED battery indicator, and durable metal body construction.
3. Package Contents
Please check the box for the following items:
- Power Bank - 1 unit
- Charging cable - 1 unit
- QR Code Guide - 1 unit
4. Setup and Initial Use
4.1 Initial Charging of the Power Bank
Before first use, it is recommended to fully charge your ZEBRONICS EnergiTank 20MR1 power bank. Use the provided charging cable and connect it to a compatible USB wall adapter (not included). The LED indicator lights will show the charging progress. All four LEDs will be steadily lit when the power bank is fully charged.
4.2 Checking Battery Level
Press the power button once to check the current battery level. The LED indicators will illuminate to show the remaining charge:
- One LED: 0-25% charge
- Two LEDs: 25-50% charge
- Three LEDs: 50-75% charge
- Four LEDs: 75-100% charge
5. Operating Instructions
5.1 Charging Your Devices
To charge your smartphone, tablet, or other compatible device, connect it to one of the output ports on the power bank using an appropriate charging cable. The EnergiTank 20MR1 features a USB-A port and two Type-C ports (Type-C1 and Type-C2). For fast charging, utilize the Type-C1 port which supports PD 3.0 (PPS) output.

Image 5.1: Illustrates the power bank in use, rapidly charging a smartphone via a connected cable.

Image 5.2: A top-down view of the power bank, clearly showing the USB-A port, PD 3.0 Type-C1 port, and Type-C2 port, along with its compact dimensions (10.4cm height, 6.7cm width, 3.2cm depth).
5.2 Simultaneous Charging
The power bank supports charging multiple devices simultaneously using its available output ports. Note that the total output power will be shared among the connected devices.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the power bank. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the power bank in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the power bank regularly. Recharge it when the battery level is low. If storing for a long period, charge it to about 50-70% every three months.
- Avoid Drops: Do not drop or subject the power bank to strong impacts, as this can damage internal components.
7. Troubleshooting
- Power bank not charging: Ensure the charging cable is securely connected to both the power bank and the power adapter. Try a different cable or adapter.
- Device not charging from power bank: Check if the power bank has sufficient charge. Ensure the charging cable is properly connected to both the power bank and your device. Try a different cable or port.
- Slow charging: Ensure you are using a fast-charging compatible cable and that your device supports fast charging. For optimal speed, use the Type-C1 PD port.
- LED indicators not working: If the power bank is not responding, try fully discharging it and then recharging it. If the issue persists, contact customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | ZEB-PB 15 |
| Battery Capacity | 20000 mAh |
| Max Output Power | 22.5W |
| Type-C1 Output | DC 5V/3A, 9V/2.22A, 12V/1.67A, 5~11V/2A (PPS) |
| USB-A Output | DC 5V/3A, 9V/2A, 12V/1.85A |
| Type-C1 / C2 Input | DC 5V/3A, 9V/2A, 12V/1.5A |
| Connector Type | USB Type C, USB Type A |
| Power Source | Battery |
| Colour | Raspberry |
| Item Weight | 213 g |
| Package Dimensions | 17.7 x 10 x 3.9 cm |
| Recommended Uses | Phone, Tablet |
9. Safety Information
To ensure safe operation and prolong the life of your power bank, please adhere to the following safety guidelines:
- The power bank incorporates overcharge, overload, and short-circuit protection. However, always use the product as intended.
- Do not expose the power bank to extreme temperatures (hot or cold), direct sunlight, or high humidity.
- Avoid dropping, puncturing, or disassembling the power bank. This can lead to damage, fire, or explosion.
- Keep the power bank away from water and other liquids.
- Do not use the power bank if it is visibly damaged, swollen, or leaking.
- Keep out of reach of children.
- Dispose of the power bank responsibly according to local electronic waste regulations. Do not dispose of it in household waste.

Image 9.1: Visual representation of the power bank's built-in short circuit, overcharge, and overload protection features.
10. Warranty and Support
For warranty information, technical support, or service inquiries regarding your ZEBRONICS EnergiTank 20MR1 power bank, please refer to the QR Code Guide included in your package or visit the official ZEBRONICS website. You may also contact ZEBRONICS customer service directly for assistance.
Manufacturer: Zebronics India Private Limited
11. Important Note on Videos
While this product may have associated videos, detailed video links and metadata (such as creator type and filename) were not available in the provided product data. Therefore, no videos could be embedded in this manual.