1. Product Overview
This manual provides instructions for the EBL Rechargeable AAAA Batteries and the accompanying Smart USB Charger. The batteries are 1.2V 400mAh Ni-MH cells, designed for devices requiring AAAA batteries, such as Surface Pens and other active styluses.

Image 1: EBL AAAA Rechargeable Batteries and Smart Charger. The image displays two white AAAA batteries with green and black EBL branding, alongside a black USB smart charger.
2. Package Contents
- 2 x EBL AAAA 400mAh Ni-MH Rechargeable Batteries
- 1 x EBL Smart AAAA Battery Charger (USB input)
- 1 x User Manual

Image 2: The EBL AAAA batteries and smart charger are shown alongside their retail packaging and a small instruction leaflet, indicating the complete product set.
3. Setup and Charging Instructions
The EBL Smart Charger is designed specifically for AAAA Ni-MH/Ni-CD batteries. It features a USB input for convenient charging.
3.1 Inserting Batteries
- Ensure the battery's positive (+) and negative (-) terminals align correctly with the charger's markings.
- Gently place the AAAA battery into the charging slot.

Image 3: A close-up of the EBL smart charger with an AAAA battery inserted. A green LED indicator is visible, signifying the charging status.
3.2 Connecting the Charger
Connect the USB plug of the charger to any standard USB power source (e.g., computer, power bank, USB wall adapter).

Image 4: The EBL smart charger is shown connected to various USB power sources, including a wall adapter, a power bank, a laptop, and a car charger, highlighting its versatile USB input design.
3.3 LED Indicator Status
- Red Light: Battery is charging.
- Green Light: Battery is fully charged.
- Light Off: No battery is installed, or the charger is not connected to a power source.
The charger incorporates advanced IC control to automatically stop charging once the battery is full, preventing overcharge.

Image 5: This image illustrates the LED indicator states of the EBL smart charger: red for charging, green for fully charged, and off when no battery is present.
4. Operating Instructions
EBL AAAA rechargeable batteries are suitable for various devices that require AAAA size batteries. They provide a constant 1.2V output.
4.1 Compatible Devices
- Surface Stylus Pens
- Wireless Mice
- Alarm Clocks
- Flashlights
- Other digital products requiring AAAA batteries

Image 6: An EBL AAAA battery is shown next to a Surface Pen, illustrating its primary use for such devices.

Image 7: A circular graphic displays various devices compatible with AAAA batteries, including a mouse, clock, digital camera, flashlight, remote, and Surface Pen, with an EBL AAAA battery at the center.
5. Maintenance and Care
Proper care ensures the longevity and optimal performance of your EBL rechargeable batteries.
5.1 Battery Storage
- Store batteries in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid storing batteries with metal objects to prevent short circuits.
5.2 Charging Cycles
EBL AAAA batteries are designed for up to 500 deep charging and discharging cycles.
5.3 Charger Care
- Keep the charger clean and free from dust and debris.
- Do not expose the charger to water or excessive moisture.

Image 8: The EBL smart charger with an inserted AAAA battery is positioned next to a laptop, illustrating its compact and portable design for easy storage and transport.
6. Safety Information
To ensure safe operation and prevent damage, please observe the following safety guidelines:
- Do not disassemble, crush, or puncture batteries.
- Do not expose batteries to fire or high temperatures.
- Keep batteries out of reach of children.
- Dispose of used batteries according to local regulations.
- The charger features multiple safety protections including overcharge, overcurrent, overtemperature, and short circuit protection.

Image 9: This graphic highlights the smart chip technology and safety features of the EBL charger, including automatic power-off, LED indicator, short circuit prevention, and IC battery function distinction.

Image 10: A visual representation of the EBL smart charger's multiple safety protections: overcharge, overcurrent, overtemperature, and short circuit protection, symbolized by icons within a shield graphic.
6.1 Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
7. Specifications
| Feature | Detail |
|---|---|
| Battery Type | Ni-MH AAAA |
| Battery Capacity | 400mAh |
| Battery Voltage | 1.2 Volts |
| Charging Cycles | Up to 500 times |
| Charger Input | DC 5V/1A (USB) |
| Charger Output | DC 1.5V/400mA |
| Product Dimensions | 1 x 0.9 x 4 inches; 1.45 ounces |
| Manufacturer | EBL |
8. Troubleshooting
- Charger LED not lighting up: Ensure the charger is properly connected to a working USB power source and a battery is correctly inserted. The LED will only illuminate when a battery is present and charging or fully charged.
- Batteries not holding charge: After many cycles, rechargeable batteries may naturally lose capacity. Ensure batteries are fully charged before use. If issues persist, consider replacing older batteries.
- Slow charging: Verify that the USB power source provides sufficient current (e.g., 1A). Using a lower current source may result in slower charging times.
9. Warranty and Support
For warranty information or technical support, please refer to the official EBL website or contact their customer service directly. Details are typically provided with the product packaging or on the manufacturer's website.





