1. Introduction
The DLYFULL UT2 is an advanced USB multi-charger designed for various rechargeable battery types, including Li-ion, Ni-MH, AA, AAA, and LiFePO4. It features independent charging slots, an LCD display for real-time information, and multiple operating modes such as Charge, Discharge, Refresh, and Test. This manual provides detailed instructions for safe and efficient use of your DLYFULL UT2 charger.
2. Safety Precautions
- Use only compatible battery types as specified in this manual. Attempting to charge incompatible batteries may result in damage or injury.
- Do not disassemble, modify, or attempt to repair the charger. Contact customer support for assistance.
- Keep the charger away from water, moisture, and high temperatures.
- Ensure proper ventilation during operation to prevent overheating.
- Do not leave charging batteries unattended for extended periods.
- Keep out of reach of children.
- Always use a suitable USB power adapter (DC 5V/2A recommended) to power the charger.
3. Package Contents
- DLYFULL UT2 USB Multi-Charger
- USB Cable (Type-C)
- Instruction Manual (this document)
4. Product Overview
Familiarize yourself with the components of your DLYFULL UT2 charger.
Figure 4.1: Front View. This image shows the DLYFULL UT2 charger from the front, highlighting the two independent battery slots and the LCD display. The display shows charging status, battery voltage, current, capacity, and mode selection. Buttons for 'MODE' and 'SLOT' are visible below the display.
Figure 4.2: Side View (Battery Slots). This image provides a side perspective of the charger, clearly showing the two spring-loaded battery contacts within each slot, designed to accommodate various battery sizes.
Figure 4.3: Side View (USB Output). This image displays the side of the charger where the USB-A output port and the USB Type-C input port are located. The USB-A port allows the charger to function as a power bank for other devices.
Figure 4.4: Bottom View. The bottom of the charger is shown, featuring ventilation holes for heat dissipation and regulatory compliance markings.
4.1. Controls and Display
- LCD Display: Shows real-time information such as voltage (V), current (A), capacity (mAh), temperature (°C), and selected mode (Charge, Discharge, Refresh, Test).
- MODE Button: Used to cycle through the operating modes (Charge, Discharge, Refresh, Test).
- SLOT Button: Used to select the battery slot (1 or 2) to view or change its settings.
5. Setup
- Connect Power: Connect the provided USB Type-C cable to the charger's input port and then to a suitable USB power adapter (DC 5V/2A recommended). The LCD display will illuminate.
- Insert Batteries: Carefully insert one or two compatible rechargeable batteries into the charging slots. Ensure the positive (+) and negative (-) terminals of the battery match the markings on the charger. The charger will automatically detect the battery type and display its current voltage.
6. Operating Instructions
The DLYFULL UT2 offers several operating modes for comprehensive battery management.
6.1. Mode Selection
After inserting a battery, the charger will enter a default mode (usually Charge). To change the mode:
- Press the SLOT button to select the desired battery slot (if two batteries are inserted).
- Press the MODE button repeatedly to cycle through the available modes: CHARGE, DISCHARGE, REFRESH, and TEST.
- Once the desired mode is displayed, stop pressing the MODE button. The charger will automatically begin the selected operation after a few seconds.
6.2. Operating Modes Explained
- CHARGE Mode:
This is the standard mode for charging batteries. The charger will automatically detect the battery type (Li-ion, Ni-MH, LiFePO4) and apply the appropriate charging algorithm. The display will show charging progress, current voltage, and accumulated capacity.
- DISCHARGE Mode:
In this mode, the charger will discharge the battery to a safe voltage level before automatically switching to CHARGE mode. This can help reduce the memory effect in Ni-MH batteries and prepare batteries for storage. The display will show the discharged capacity.
- REFRESH Mode:
The Refresh mode is designed to restore the full capacity of older or underperforming Ni-MH batteries. It involves multiple charge-discharge cycles to optimize battery performance. This process can take several hours depending on the battery's condition. The display will show the current cycle and accumulated capacity.
Figure 6.1: Refresh Mode Example. This image shows the DLYFULL UT2 charger with batteries inserted, potentially illustrating the refresh mode in progress. The display would indicate the current operation.
- TEST Mode:
The Test mode measures the actual capacity of a battery. It typically involves fully charging the battery, then fully discharging it while measuring the discharged capacity, and finally recharging it. This provides an accurate assessment of the battery's health and true capacity.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the charger's exterior. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the charger in a cool, dry place away from direct sunlight.
- Battery Contacts: Periodically check the battery contacts for any dirt or corrosion. Clean gently if necessary to ensure good electrical connection.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not powering on | No power connection or faulty cable/adapter. | Ensure the USB Type-C cable is securely connected to both the charger and a working USB power adapter. Try a different cable or adapter. |
| "Low Input" message on display | Insufficient power supply from the USB adapter. | Use a USB power adapter that provides at least DC 5V/2A. |
| Battery not charging | Incorrect battery insertion, incompatible battery, or faulty battery. | Check battery polarity. Ensure the battery type is supported. Try a different battery. Clean battery contacts. |
| Charger or battery gets hot | Normal during charging/discharging, but excessive heat indicates an issue. | Ensure adequate ventilation. If overheating persists, remove the battery and discontinue use. Contact support. |
9. Specifications
The following table details the technical specifications of the DLYFULL UT2 charger.
Figure 9.1: Technical Specifications. This image displays a table outlining the input, output, discharge current, maximum protection voltages for Li-ion and Ni-MH batteries, and a comprehensive list of compatible battery types and sizes.
| Feature | Specification |
|---|---|
| Input | DC 5V / 2A (USB Type-C) |
| USB 5V Output | 2A Max |
| Discharge Current | 350mAh |
| Li-ion Max Protection Voltage | 4.20V ± 0.05V |
| Ni-MH Max Protection Voltage | 1.53V ± 0.05V |
| Compatible Batteries (Li-ion 3.6V/3.7V) | 10340, 14500, 16340 (RCR123A), 17500, 17650, 17670, 18490, 18500, 18650 |
| Compatible Batteries (LiFePO4 3.2V) | 20700, 21700, 22650, 26500, 26650 |
| Compatible Batteries (Ni-MH 1.2V) | AA, AAA, C, SC |
10. Warranty Information
DLYFULL products are manufactured to high-quality standards. For specific warranty details, please refer to the warranty card included with your purchase or visit the official DLYFULL website. This warranty typically covers manufacturing defects under normal use conditions.
11. Customer Support
If you encounter any issues or have questions regarding your DLYFULL UT2 charger, please contact our customer support team. You can usually find contact information on the DLYFULL official website or through your retailer. Please have your product model (UT2) and purchase details ready when contacting support.
