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A DJI battery that will not charge may be in hibernation, outside its charging temperature range, connected to an unsuitable charger or faulty. Start with an external inspection and the manual for your model. A battery that is swollen, wet, cracked or has an unusual smell must not be used to find out which of these possibilities applies.
The diagnostic steps below are intended to organise safe checks. It does not include opening the battery, powering the cells directly, bridging the contacts or trying to bypass the protection circuit.
Before connecting the charger
Switch off the equipment and inspect the battery without taking it apart. Look for deformation, damage to the latches and dirty or damp contacts. If you notice any damage, stop using it and ask the manufacturer for guidance on transport and handling. Do not put a suspect battery in a rucksack to take it to your next flight.
If the battery has just come back from a flight, let it reach the charging temperature stated in the manual naturally. Do the same if it has come from a very cold place. Do not use hairdryers, radiators or a freezer to change the temperature faster.
No LEDs: hibernation or failure?
The absence of lights does not mean that the battery is dead. In the Mini 4 Pro frequently asked questions, DJI explains that batteries are shipped in hibernation and are activated by charging, in the aircraft or with the compatible charging hub. This behaviour is an example for a specific model, not a promise that every older battery can be recovered.
Identify the battery’s model number and follow the activation procedure specified for it. If there is no response with the recommended setup, stop testing and contact support. A battery that has been stored for a long time should not automatically be treated as a new battery awaiting activation.
Testing the socket, cable and charger
- Check the manual for the required charger or power supply protocol.
- Inspect the cable and plugs; replace them only with a compatible, undamaged option.
- Try a known working socket, without questionable adapters in between.
- If you use a charging hub, check whether the model charges the batteries in sequence.
- Observe the indicators for the period stated by the manufacturer and record the result.
A USB-C charger is not suitable simply because the plug fits. The advertised power rating alone also does not confirm which power profiles are supported. For the Mini 4 Pro, for example, DJI recommends USB Power Delivery charging. For other models, consult the relevant documentation.
Avoid testing a new cable, a different socket and another charger at the same time. If charging starts, you will not know which change solved the problem. A brief record makes the conclusion more useful.
How to interpret the LEDs
The LEDs may indicate charging, protection or an error. Count which ones flash and observe the frequency, but always compare them with the table for your model. The DJI battery indicator guide distinguishes, among other things, temperature, power supply and communication alerts. A combination of lights is not a universal diagnosis for every generation.
| Observation | Useful information |
|---|---|
| No lights | Model, charger, cable and connection method |
| One LED flashes repeatedly | LED number and a short video of the pattern |
| The charge does not seem to increase | Initial level, observed duration and other connected devices |
| Only one battery fails | Model number and comparison with another compatible battery |
If you compare it with another battery, use only compatible units that are undamaged and within the conditions specified by the manufacturer. Do not put a damaged battery in a second drone to confirm the fault.
If it starts charging again, can I fly straight away?
The fact that charging starts does not prove that the battery is fit to fly. Check that the battery is seated properly, read any warnings in the app and carry out the checks specified by the manufacturer. If there are recurring errors, a sudden drop in charge or shutdowns, request a diagnosis before flying again. Do not use a flight over the sea as a recovery test.
For storage and regular use, consult the guide to LiPo battery care. If the problem arose before a trip, also review the rules for carrying batteries on aircraft; a faulty battery must not be treated according to instructions intended for healthy batteries.
Official sources consulted on 10 October 2026. Illustrative image. Charging conditions and indicators should be confirmed in the battery manual.
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