Fix a DJI Mini 4 Pro battery that will not charge
Separate a powered-on aircraft, temperature lockout, charger or hub fault, hibernating battery, and unsafe battery before replacing parts.
Direct answer
The shortest reliable path.
Turn the aircraft off first: DJI states that Mini 4 Pro batteries do not charge while the aircraft is powered on. Inspect the battery and contacts, bring the battery into DJI’s 5–40 °C charging range, then test one battery directly in the aircraft with a known-good USB Power Delivery charger and cable. A new or long-unused battery may need this single-battery path to wake from hibernation. If direct charging works but the same battery fails in the hub, investigate the hub; if neither path works, or the battery is swollen, damaged, or reports an app error, stop and contact DJI.
Official visual references
Match what you see before you act.
These visuals are tied to the cited support pages. Read each model scope and observation before using it as a match.
Use the documented Mini 4 Pro charging sequence
DJI Tutorials begins the Mini 4 Pro charging chapter at 8:30 and shows the manufacturer’s normal first-use charging path.
- Look for
- Match the aircraft or hub connection and normal battery-level LED sequence before interpreting a silent or abnormal pattern as a failed pack.
- Applies to
- DJI Mini 4 Pro first-use charging shown by DJI; damaged batteries and unlisted third-party charging hardware are outside this path.
System view
Check the whole path.
- 01AC outlet and USB-PD charger
- 02USB-C cable and aircraft or hub
- 03Battery temperature and condition
- 04Battery management and hibernation state
- 05DJI Fly status
Scope before steps.
DJI Mini 4 Pro Intelligent Flight Battery and compatible Mini 3 Series batteries charged in the aircraft or DJI Mini 3 Series Two-Way Charging Hub.
Opening or repairing a battery, third-party batteries or chargers, impact or water damage, air-travel rules, or forcing a battery that DJI Fly marks unsafe.
Procedure
Do this in order.
- 01
Remove the simple charging blocks
Turn the aircraft fully off, reseat the battery or hub connection, and allow a just-flown battery to return to the documented 5–40 °C charging range.
- 02
Inspect before applying power again
Check the battery shell, contacts, charging port, aircraft battery bay, and hub slots for swelling, damage, contamination, or an abnormal fit.
- 03
Wake one battery without the hub
For a new or long-unused battery with no normal LED response, install only that battery in the powered-off aircraft and connect the known-good charger and cable.
- 04
Cross-test the two charging paths
Test the same battery directly in the aircraft and in the Two-Way Charging Hub, changing only one charger or cable at a time.
- 05
Read the LEDs and DJI Fly result
Compare the LED behavior with DJI’s abnormal-blinking guidance. If the battery powers on, install it, connect DJI Fly, and record any exact battery error before contacting support.
Diagnostic matrix
Read the result, not the guess.
| What you see | Check next | What it means |
|---|---|---|
| Battery is at or above about 95% and will not top up | Use the reported level and do not force another charge cycle. | DJI says overcharge protection can prevent charging until the level falls below 95%; this alone is not a failed battery. |
| Direct aircraft charging works; hub charging does not | Retest the hub input, cable, seating, and another known-good slot or battery. | The cross-test isolates the charging-hub path instead of condemning the battery. |
| No LEDs after long storage | Leave one safe battery on the documented single-battery charging path and avoid rapid connect-disconnect cycles. | The battery may be waking from hibernation, but continued nonresponse after the controlled test requires DJI support. |
| DJI Fly shows a battery maintenance prompt | Follow the exact in-app instruction; DJI’s Mini 4 Pro guide specifies a full charge followed by 48 hours of undisturbed rest for the documented cell-voltage maintenance case. | This is a battery-management condition, not a reason to bypass the app and launch the aircraft. |
Stop conditions
Know when not to keep changing things.
- Do not charge or fly a swollen, leaking, punctured, crushed, contaminated, or unusually hot battery.
- Do not open the pack, short contacts, bypass its management electronics, or use improvised recovery equipment.
- Contact DJI when a safe, in-range battery still has abnormal LEDs or no response on both known-good direct and hub charging paths.