CYNOVA DJI Mini 4 Pro Battery Charger Hub User Manual

1. Introduction

This manual provides instructions for the safe and efficient use of the CYNOVA Four-Port Two-Way Fast Charging Hub, designed for DJI Mini 4 Pro and DJI Mini 3 Pro intelligent batteries. This charging hub allows for simultaneous charging of multiple batteries and can also function as a power bank for other devices.

Image: The CYNOVA charging hub with four DJI Mini 4 Pro batteries inserted, ready for charging.

2. Product Features

• Two-Way Fast Charging: Designed for DJI Mini 4 Pro and DJI Mini 3 Pro batteries (2453mAh and 3850mAh versions).
• Simultaneous Charging: Capable of charging two batteries concurrently. Can fully charge four batteries within 2 hours when using a 65 Watt input with 2453 mAh batteries.
• Reverse Output (Power Bank Function): When a DJI Mini 4 Pro battery is inserted, the hub can charge other devices such as DJI RC remote controls or mobile phones via its USB output (5V == 2A).
• Intelligent and Safe: Constructed from fireproof material with IC protection and LED charging indicators to ensure safe and stable operation.

Image: Visual representation of the charging hub's key features, including fast charging, LED indicators, and power bank capability.

3. Package Contents

• 1 x CYNOVA DJI Mini 4 Pro Battery Charger Hub
• 1 x USB-C to USB-C Cable
• Note: Batteries are not included.

Image: The charging hub and the USB-C to USB-C cable that are included in the package.

4. Setup

1. Connect the provided USB-C to USB-C cable to the INPUT port on the charging hub.
2. Connect the other end of the USB-C cable to a compatible power adapter (e.g., USB wall charger, power bank, car charger, laptop) with a power output of at least 45W for optimal charging.
3. Ensure the power source is active.

Image: A DJI Mini 4 Pro battery being inserted into the charging hub, with the hub connected to a power supply.

5. Operating Instructions

5.1 Charging Batteries

1. With the charging hub connected to a power source, insert up to four DJI Mini 4 Pro or Mini 3 Pro intelligent batteries into the designated slots.
2. The hub will automatically begin charging. Refer to the LED indicators for charging status.
3. Charging Rules based on Wall Charger Power:
   • Less than PD 45W: Batteries charge in sequence according to their remaining power level, from highest to lowest.
   • PD 45W or PD 65W: The battery with the highest remaining power charges first. The remaining power will then charge another battery on the same side or in a diagonal position, from highest to lowest.
   • PD 65W or above: Two batteries can be charged simultaneously at full power.

Image: A table illustrating the approximate charging times for 2453mAh and 3850mAh batteries when charging 2 or 4 batteries.

5.2 Power Bank Function (Reverse Output)

1. Insert at least one charged DJI Mini 4 Pro or Mini 3 Pro battery into any slot on the charging hub.
2. Connect your external device (e.g., DJI RC remote control, mobile phone, tablet) to the USB-A OUTPUT port on the front of the charging hub using a compatible USB cable.
3. The hub will use the power from the inserted drone battery(ies) to charge your external device (USB Output: 5V == 2A).

Image: The charging hub with batteries inserted, connected via USB to a smartphone for charging.

Image: The charging hub's USB output port being used to charge a variety of devices, including DJI controllers and mobile devices.

6. LED Indicators

The charging hub features LED indicators for each battery slot to display the charging status:

• Red Lights Flashing Alternately: Indicates that the battery is currently charging.
• Green Lights Always On: Indicates that the battery is fully charged.

Image: A visual guide to the LED indicators, showing red lights for charging and green lights for a full battery.

7. Important Notes and Safety

• Battery charging should only be performed with batteries inserted correctly into the frame.
• When charging two batteries, ensure they are placed diagonally or on the same side for proper simultaneous charging, depending on the input power. Incorrect placement may prevent simultaneous charging.
• Always use the charger in a well-ventilated area.
• Do not cover the charger during operation.
• Keep out of reach of children.
• Avoid exposing the charger to water or extreme temperatures.

Image: A guide illustrating the correct diagonal placement for two batteries to ensure simultaneous charging, and an example of incorrect placement.

8. Specifications

Image: The CYNOVA charging hub shown with its included USB-C cables.

9. Troubleshooting

• Batteries not charging: Ensure the charging hub is properly connected to a power source and the power source is active. Check that batteries are inserted correctly. Verify the power adapter meets the minimum wattage requirements.
• Slow charging: Ensure your power adapter provides sufficient wattage (PD 65W or above for simultaneous fast charging).
• Power bank function not working: Ensure a charged drone battery is inserted into the hub and your external device is connected to the USB-A OUTPUT port.
• If you encounter any other issues, please refer to the warranty and support section for customer service contact information.

10. Warranty and Support

The CYNOVA DJI Mini 4 Pro Battery Charger Hub comes with a 2-year warranty.

For technical support, warranty claims, or any product-related inquiries, please contact CYNOVA customer service. Refer to the product packaging or the official CYNOVA website for the most current contact details.

11. Product Videos