1. Introduction
Thank you for choosing the Dlyfull Smart Battery Charger UT1. This intelligent charger is designed to efficiently charge, discharge, test, and refresh AA and AAA Ni-MH/Ni-CD rechargeable batteries. It features an LCD display for monitoring battery status and multiple safety protections to ensure reliable operation. Please read this manual thoroughly before use to ensure proper operation and to maximize the lifespan of your batteries and charger.
2. Safety Information
To prevent injury or damage to the charger and batteries, please observe the following safety precautions:
- Only charge Ni-MH and Ni-CD AA/AAA rechargeable batteries. Do not attempt to charge non-rechargeable batteries or other battery types (e.g., Li-ion, Alkaline) as this may cause explosion, rupture, or leakage.
- Ensure correct battery polarity (+/-) when inserting batteries into the charger slots.
- Do not disassemble, modify, or short-circuit the charger.
- Keep the charger away from water, moisture, and high temperatures.
- Do not use the charger if it is damaged or has been exposed to liquids.
- Keep out of reach of children.
- The charger includes advanced safety features such as over-heat, over-voltage, over-current, short-circuit protection, and defective battery detection.
Image: The Dlyfull Smart Battery Charger highlighting its comprehensive safety features including over-current, over-voltage, reverse, short-circuit protection, and intelligent error alarming.
3. Package Contents
The Dlyfull Smart Battery Charger UT1 package includes:
- Dlyfull UT1 USB Battery Charger
- Micro USB Cable
- User Manual (this document)
Image: The Dlyfull Smart Battery Charger UT1, showing the charger unit, a Micro USB cable, and four AA/AAA batteries inserted into the slots.
4. Product Overview
The Dlyfull UT1 is a 4-bay smart charger designed for Ni-MH and Ni-CD AA/AAA batteries. It offers four distinct operating modes and an intelligent LCD display.
Key Features:
- Four Operating Modes: Charge, Discharge, Test, and Refresh.
- Individual Slot Control: Each of the four bays operates independently.
- Selectable Charging Current: Choose from 0.25A, 0.5A, 0.75A, or 1A.
- Intelligent LCD Display: Shows charging status, time, capacity, voltage, and current for each battery.
- Comprehensive Safety: Includes over-heat, over-voltage, over-current, short-circuit protection, and defective battery detection.
- USB Powered: Compatible with various USB power sources for portability.
Image: The Dlyfull Smart Battery Charger with an overlay illustrating its four modes of operation: Charge, Discharge, Test, and Refresh.
5. Setup
5.1 Connecting Power
- Connect the provided Micro USB cable to the charger's input port.
- Connect the other end of the USB cable to a compatible USB power source (e.g., USB wall adapter, computer USB port, power bank, car charger). The charger requires a 5V input.
- The LCD display will illuminate, indicating the charger is powered on.
Image: The Dlyfull Smart Battery Charger connected to a standard USB wall adapter, demonstrating the power connection setup.
5.2 Inserting Batteries
- Insert one to four AA or AAA Ni-MH/Ni-CD rechargeable batteries into the charging slots.
- Ensure the positive (+) and negative (-) terminals of the batteries match the polarity indicators in the charger slots.
- The charger will automatically detect the battery type and display its current status on the LCD.
Image: A close-up view of the Dlyfull Smart Battery Charger's four slots, showing AA and AAA batteries correctly inserted, ready for charging.
6. Operating Modes
The Dlyfull UT1 charger offers four distinct operating modes: Charge, Discharge, Test, and Refresh. Each mode can be selected independently for each battery slot.
6.1 Mode Selection
- After inserting batteries, the charger will default to Charge mode.
- To select a different mode for a specific slot, press the SLOT button repeatedly until the desired slot is highlighted on the LCD.
- Press the MODE button repeatedly to cycle through the available modes: Charge, Discharge, Test, Refresh.
- Once the desired mode is selected, the charger will begin the operation after a few seconds of inactivity or by pressing the MODE button again to confirm.
6.2 Current Selection
The charging current can be adjusted for each slot:
- While a slot is highlighted (before operation starts), press the CURR. button repeatedly to cycle through available charging currents: 0.25A, 0.5A, 0.75A, 1A.
- Select a current appropriate for your battery's capacity. Lower currents are generally safer for smaller capacity batteries and can extend battery life.
6.3 Mode Descriptions
- Charge Mode: Charges the battery to its full capacity. The LCD will display charging time, current, voltage, and accumulated capacity.
- Discharge Mode: Discharges the battery to remove the "memory effect" often associated with Ni-CD batteries. This mode is useful before a refresh cycle.
- Test Mode: Measures the actual capacity of the battery. The charger will fully charge the battery, then discharge it to measure its capacity, and finally recharge it. The measured capacity in mAh/Ah will be displayed.
- Refresh Mode: Designed to restore older batteries to their maximum capacity. This mode typically involves multiple charge-discharge cycles to break down crystal formations within the battery.
Image: The Dlyfull Smart Battery Charger's intelligent LCD display, showing detailed information such as charging time, voltage, current, and charged capacity for each battery slot.
7. Maintenance
- Clean the charger and battery contacts regularly with a dry, soft cloth to ensure optimal connection.
- Do not use abrasive cleaners or solvents.
- Store the charger in a cool, dry place when not in use.
- Avoid dropping the charger or subjecting it to strong impacts.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not powering on. | No power supply, faulty USB cable, or faulty power adapter. | Check USB cable connection. Try a different USB port or power adapter. |
| Battery not charging. | Incorrect battery type, incorrect polarity, defective battery, or poor contact. | Ensure battery is Ni-MH/Ni-CD and correctly inserted. Clean battery contacts. Replace defective battery. |
| LCD displays "ERR" or similar error. | Defective battery, short-circuit, or over-temperature. | Remove and reinsert the battery. If error persists, the battery may be defective. Allow charger to cool if hot. |
| Charging process is slow. | Low charging current selected, or power source is insufficient. | Increase charging current using the CURR. button. Use a higher-output USB power adapter (e.g., 5V/2A). |
9. Specifications
| Model | UT1 |
| Compatible Battery Types | AA, AAA Ni-MH, Ni-CD Rechargeable Batteries |
| Input Voltage | 5 Volts |
| Charging Current Options | 0.25A, 0.5A, 0.75A, 1A |
| Operating Modes | Charge, Discharge, Test, Refresh |
| Display | Intelligent LCD Display |
| Safety Features | Over-heat, Over-voltage, Over-current, Short-circuit protection, Defective battery detection |
| Dimensions | 5.83 x 4.88 x 1.85 inches |
| Weight | 7.8 ounces |
| UPC | 742354357019 |
10. Warranty and Support
The Dlyfull Smart Battery Charger UT1 comes with a worry-free 18-month warranty from the date of purchase. If you encounter any issues or have questions regarding your product, please contact Dlyfull customer service for assistance. Please refer to the product packaging or the official Dlyfull website for current contact information.
