If your DJI Osmo Action 4 not charging problem appeared suddenly, the cause is often simpler than it seems.
This guide walks through the most likely reasons, the fastest fixes, and the checks that separate a dead battery from a power or firmware issue.
What “not charging” usually means on the DJI Osmo Action 4
Charging problems can show up in different ways.
The camera may show no charging icon, the battery percentage may stay frozen, the status light may not respond, or the device may power on from cable power but fail to increase battery level.
Before replacing anything, identify the exact symptom:
- No response at all: no LED activity, no screen indication, no battery percentage change.
- Intermittent charging: charging starts and stops when the cable moves or when the camera warms up.
- Slow charging: battery increases only after many hours or on some chargers, but not others.
- Charging icon appears but percentage does not rise: often linked to battery health, temperature, or power delivery.
Why the DJI Osmo Action 4 may not charge
The DJI Osmo Action 4 uses a USB-C charging connection and a removable battery system, so failures can come from the camera, the battery, the cable, the charger, or the environment.
The most common causes are dirt in the port, a damaged USB-C cable, insufficient power output, a firmware glitch, or a battery that has reached the end of its useful life.
Less obvious issues can also interfere with charging, including moisture in the port, overheating, cold temperatures, and third-party accessories that do not meet USB Power Delivery requirements.
Check the easiest fixes first
Inspect the USB-C port
Look inside the USB-C port with a bright light.
Dust, sand, or lint can prevent the connector from making full contact.
If debris is visible, power off the camera and use a soft, dry brush or compressed air at a safe distance.
Avoid metal objects, liquids, or forceful probing that can damage the contacts.
Try a different cable
USB-C cables vary widely.
Some only support data or low-power charging, while others support higher wattage and stable power delivery.
Use a known good USB-C cable that is rated for charging and data, ideally one that came from a reputable brand or was supplied with another camera, phone, or tablet that charges reliably.
Test another power source
A weak charger or underpowered USB port may not provide enough current.
Try:
- A wall adapter with USB Power Delivery support
- A different USB port on a laptop or desktop
- A quality power bank with stable output
If the camera charges from one source but not another, the camera is usually fine and the issue is with the adapter, cable, or port.
Confirm the battery is seated correctly
The DJI Osmo Action 4 relies on a properly installed battery for normal operation.
Remove the battery, inspect the contacts, and reinstall it firmly.
If the battery is not fully seated, the camera may behave as if it is not charging or may lose power unexpectedly.
Check for any signs of swelling, corrosion, or physical damage.
A swollen or damaged battery should not be used.
If you have a second battery, test it to determine whether the original battery is the problem.
Rule out temperature-related charging limits
Lithium-ion batteries charge best within a moderate temperature range.
If the camera or battery is too cold or too hot, the DJI Osmo Action 4 may delay or stop charging to protect the cell.
Common examples include:
- Charging immediately after filming in direct sun
- Charging a cold camera after winter use
- Charging inside a hot car or enclosed case
Let the camera return to room temperature for 20 to 30 minutes, then try again.
If you are using a battery grip, enclosure, or mounting setup that traps heat, remove it during charging.
Update firmware and reset the camera
Firmware bugs can affect battery detection and charging behavior.
If the camera powers on, connect it to the DJI Mimo app and check for updates.
Keeping both the camera firmware and app current helps resolve known power-management issues.
If charging still fails, perform a basic restart:
- Power off the camera completely.
- Remove the battery.
- Wait at least 30 seconds.
- Reinsert the battery and reconnect power.
This simple reset can clear temporary glitches in the charging circuit or battery reporting system.
How to tell whether the problem is the battery or the camera
Use a step-by-step process to isolate the fault.
This prevents unnecessary part replacement and makes warranty support easier if needed.
Battery test
- Use the same cable and charger with another battery, if available.
- Charge the suspect battery in another compatible DJI Osmo Action 4 body, if possible.
- Check whether the camera recognizes the battery level correctly when powered off and on.
Camera test
- Charge the camera without accessories attached.
- Inspect the battery compartment for bent pins or contamination.
- Try a battery that is known to charge normally.
If one battery charges normally while another does not, the battery is likely the issue.
If no battery charges in the camera, the charging port or internal power circuitry may be at fault.
Common accessory and setup problems
Third-party accessories can create charging confusion, especially when using cages, waterproof housings, hubs, or battery grips.
A tight case may prevent the USB-C plug from seating fully.
Some power banks also enter low-power sleep mode if the camera draws less current than expected.
To isolate accessory issues, test the camera in a bare setup with only the battery, cable, and charger.
If charging works in that configuration, reintroduce accessories one at a time.
Signs that indicate hardware damage
Some symptoms suggest a physical hardware issue rather than a simple charging mismatch:
- Burning smell or discoloration near the port
- Loose USB-C connection that wobbles excessively
- Battery contacts that appear bent or corroded
- Camera gets unusually hot during charging
- Charging only works at a specific cable angle
In these cases, stop testing repeatedly.
Continued use can worsen the damage or create a safety risk.
When to contact DJI support
If the DJI Osmo Action 4 still will not charge after trying known good cables, chargers, batteries, and a firmware update, contact DJI Support or an authorized service center.
Have your serial number, proof of purchase, firmware version, and a list of tests you performed ready before opening a case.
This information helps support teams determine whether the issue is eligible for warranty repair, battery replacement, or internal hardware service.
How to prevent charging problems in the future
A few habits can reduce the chance of recurring charging failures:
- Use certified USB-C cables and reputable chargers
- Keep the USB-C port clean and dry
- Store batteries at moderate charge levels when not in use for long periods
- Avoid charging immediately after heavy recording sessions if the camera is hot
- Do not force connectors into the port at an angle
- Inspect batteries regularly for swelling or damage
For travel or action sports use, keep a spare charging cable and a verified wall adapter in your kit.
That makes it much easier to identify whether a charging issue is caused by the environment or by the camera itself.
Quick troubleshooting checklist for DJI Osmo Action 4 not charging
- Confirm the cable supports charging, not only data
- Try a different wall adapter or power source
- Inspect and clean the USB-C port
- Re-seat or replace the battery
- Let the camera return to room temperature
- Update firmware through the DJI Mimo app
- Test with accessories removed
- Look for visible damage or swelling