One port charges and the other does not.
MacBook Air M1 not charging This query can mask very different faults. On M1 models USB-C charging requires electronic negotiation. Replacing the battery without measuring the ports and controllers can leave exactly the same problem.
The 2020 MacBook Air M1 uses first‑generation Apple Silicon and on‑board storage. If the machine won’t boot and there is data without a backup, avoid logic‑board replacements or restores before diagnosis.
The more precise the description, the fewer unnecessary tests will be required:
One port charges and the other does not.
The charger connects and disconnects.
Battery percentage does not increase.
The machine boots on battery but does not accept external power.
These are the areas that should be examined in this case:
Port contamination or wearChecked before recommending replacement.
USB‑C controllersChecked before recommending replacement.
BatteryChecked before recommending replacement.
Main charging lineChecked before recommending replacement.
Cable or adapterChecked before recommending replacement.
The cause is confirmed by measurement and actual behaviour, not by similarity to another Mac.
Test certified cable and charger. Do not clean the connector with metal objects.
Stop testing if there is odour, localised heat, liquid or intermittent connections. Continuing to insist may enlarge a localised fault.
Each port is compared, along with the negotiated voltage and current draw. Then communication with the battery and the output of the charging circuit are verified.
They also check for secondary damage. A faulty input can affect the charging circuit; liquid can reach multiple connectors; and a power drop can cause file system damage.
On Apple Silicon, storage is integrated and encrypted. Replacing the logic board does not automatically transfer documents, photos or projects. When no backup exists, the strategy should prioritise the original board and avoid actions that would erase content.
Before restoring firmware, reinstalling or accepting a replacement, consult the Mac data recovery service.
The solution may involve repairing a port, replacing a connector, correcting firmware, intervening in the charging circuit or repairing the board at component level. The decision follows the diagnosis.
Consult our MacBook Air repair service or use the contact page to explain the issue.
Yes. Each input has its own circuits, which must be compared before declaring the entire board damaged.
We can provide a preliminary estimate, but the final cost depends on the cause, secondary damage and the components required.
Yes. Contact us before shipping to explain the fault, indicate if there is important data and to receive packing instructions.