1. Introduction
Thank you for choosing the EBL D Cells 10000mAh Rechargeable Batteries and Universal Charger. This product is designed to provide a reliable and versatile power solution for various electronic devices. The universal charger is capable of charging multiple battery types, ensuring convenience and efficiency.
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your new EBL battery charger and rechargeable batteries. Please read it thoroughly before use and retain it for future reference.
2. Product Features
- Multiple Function Modes: Charger offers charge, discharge, and error detection modes for comprehensive battery management.
- Wide Compatibility: Compatible with 1/2/3/4 AA, AAA, C, D Ni-MH Ni-CD rechargeable batteries and 1/2 9V Ni-MH Ni-CD batteries.
- Personality LCD Display: Clear LCD display shows charging progress for AA/AAA/C/D Ni-MH Ni-Cd batteries, with LED indicators for 9V batteries.
- Intelligent Microprocessor Control: Built-in microcomputer chip automatically switches from fast charging to trickle charging when batteries are nearly full, ensuring complete charge.
- Double Protection: Features negative delta V (- ∆V) cut-off function (except for 9V batteries), safety timer control for overcharge protection, short circuit protection, and non-rechargeable/bad cell detection.
3. Package Contents
Upon opening your EBL product package, please verify that all items listed below are present and in good condition:
- 1 x EBL Universal Battery Charger (Model: EBL-906)
- 4 x EBL D Cells 10000mAh Ni-MH Rechargeable Batteries
- 1 x AC Power Adapter
- 2 x Durable Storage Cases for C/D Size Batteries
- 1 x User Manual

Figure 3.1: EBL Universal Charger with D-cell batteries and accessories.

Figure 3.2: EBL D-cell batteries stored in their protective cases.
4. Safety Information
To ensure safe operation and prolong the lifespan of your EBL product, please adhere to the following safety guidelines:
- Do not disassemble or modify the charger or batteries.
- Keep the charger and batteries away from water, fire, and high temperatures.
- Use only compatible Ni-MH/Ni-CD rechargeable batteries with this charger. Do not attempt to charge non-rechargeable batteries.
- Ensure correct polarity (+/-) when inserting batteries into the charger.
- Unplug the charger from the power outlet when not in use or during thunderstorms.
- Keep out of reach of children.
- The charger features built-in protections against over-charge, over-current, over-voltage, over-heat, and short-circuit.

Figure 4.1: Intelligent protection features of the EBL charger.

Figure 4.2: The charger's internal components designed for safety assurance.
5. Setup
- Unpack the Charger: Carefully remove the EBL Universal Charger and all accessories from its packaging.
- Connect Power: Plug the AC power adapter into the charger's input port, then plug the other end into a standard wall outlet. The LCD display will illuminate.
- Insert Batteries: Open the transparent cover of the charger. Insert the rechargeable batteries (AA, AAA, C, D, or 9V) into their respective slots, ensuring correct polarity (+/-). The LCD display will show the charging status for each battery.

Figure 5.1: EBL charger with D-cell batteries inserted and connected to power.
6. Operating Instructions
6.1 Charging Batteries
- After inserting batteries, the LCD display will show the current charge level and charging animation for AA/AAA/C/D batteries. For 9V batteries, an LED indicator will light up.
- The charger automatically detects the battery type and initiates the appropriate charging process.
- Once batteries are fully charged, the charger will switch to trickle charging to maintain full capacity and prevent overcharging. The LCD display will show a full battery icon.

Figure 6.1: LCD display indicating charging status for individual battery slots.
6.2 Discharge Function
The charger features a discharge function to optimize battery performance and extend lifespan, especially for Ni-CD batteries which can suffer from memory effect.
- To initiate discharge, press the blue button located below the LCD screen. The charger will begin discharging the batteries.
- Once fully discharged, the charger will automatically switch back to charging mode.
6.3 Compatible Battery Types
This universal charger supports a wide range of rechargeable battery sizes and chemistries:
- AA Ni-MH / Ni-CD
- AAA Ni-MH / Ni-CD
- C Ni-MH / Ni-CD
- D Ni-MH / Ni-CD
- 9V Ni-MH / Ni-CD

Figure 6.2: The universal charger accommodating different battery sizes.
7. Maintenance
- Cleaning: Disconnect the charger from power before cleaning. Use a soft, dry cloth to wipe the charger's surface. Do not use abrasive cleaners or solvents.
- Storage: Store the charger and batteries in a cool, dry place away from direct sunlight and extreme temperatures. For D and C size batteries, utilize the provided durable storage cases to protect them from physical damage and short circuits.
- Battery Care: For optimal battery lifespan, it is recommended to fully discharge and then fully recharge batteries periodically, especially if they have not been used for an extended period.

Figure 7.1: Durable storage cases for safe battery keeping.
8. Troubleshooting
- Batteries Not Charging:
- Ensure the charger is properly plugged into a working power outlet.
- Verify that batteries are inserted with correct polarity (+/-).
- Check if the batteries are rechargeable (Ni-MH/Ni-CD). Non-rechargeable batteries will not charge.
- If the LCD shows an error, the battery might be damaged or incompatible. Try a different battery.
- Charger Overheating:
- Slight warmth during charging is normal. If the charger becomes excessively hot, unplug it immediately.
- Ensure adequate ventilation around the charger. Do not cover it during operation.
- Inconsistent Charging:
- Ensure battery contacts are clean.
- Use the discharge function periodically to prevent memory effect, especially for Ni-CD batteries.
9. Specifications
Attribute | Value |
---|---|
Brand | EBL |
Model Number | EBL-906-4D |
Product Dimensions | 8.66 x 5.51 x 3.15 inches (Charger) |
Item Weight | 11.29 ounces |
Output Voltage | 1.2 Volts (DC) |
Compatible Battery Types | AA, AAA, C, D, 9V Ni-MH/Ni-CD |
Country of Origin | China |
10. Warranty and Support
EBL products are manufactured to high-quality standards and are backed by a manufacturer's warranty. For specific warranty details, please refer to the warranty card included in your product packaging or visit the official EBL website.
If you encounter any issues or have questions regarding your EBL D Cells 10000mAh Rechargeable Batteries and Universal Charger, please contact EBL customer support. Contact information can typically be found on the product packaging or the official EBL website.