MacBook Not Charging:
Causes and Solution

Work from the cheapest to the most expensive

With charging problems the correct order is to start with the most likely and cheapest cause. If you follow the steps below in order, you will have eliminated the situations that can be resolved without going to a service centre.

1. Test the cable and the adapter

The component that wears out most in the charging chain is the cable. Internal wires can break, particularly at the bending points close to the adapter and the connector; because the outer sheath looks intact, the problem is not obvious. The symptom is familiar: charging starts when you hold the cable at a particular angle and stops when you let go.

• If possible with a different cable and adapter and try it. This single test makes clear whether the problem lies in the device or in the accessory.
• Check the output of the adapter. Trying to charge a MacBook with a phone adapter does not work on most models; while the device is switched on, its power consumption exceeds what the adapter can deliver.
• Check whether the adapter is heating up and whether it shows any deformation.
• Try a different socket; take the extension lead out of the setup.

2. Check the charging port

Although this step looks simple, it is the one whose outcome surprises people most in service. The USB-C port collects lint in devices carried in a pocket or a bag. The dirt that builds up compacts over time and prevents the cable from going all the way in. The cable looks plugged in, but no electrical contact is made.

Shine a light into the port and look inside. If you see an obvious blockage, then with the device switched off you can non-metallic carefully clean it with a thin tool (such as a wooden toothpick). Do not use metal objects, as they damage the contact points inside the port. When the cable is inserted it must give a perceptible sense of “seating”.

Also try the cable the other way round, and if your MacBook has more than one port, test the other ports as wellIf only one particular port is not working, the problem lies in that port; if none of them work, the search must continue elsewhere.

3. Rule out software-based charge management

macOS can stop charging at a certain level in order to extend the life of the battery. This is not a fault but a designed behaviour, and it engages automatically according to your usage habits. If the device stays plugged in for long periods, the system deliberately holds off charging.

You will see a note about this in the battery menu or in the battery section of the system settings. If such a note is present, there is nothing to be done; the system will resume charging to full when required. The contribution of this behaviour to battery health and the other settings in our battery life guide we have covered this.

Restarts and resets

A simple restart clears temporary software hang-ups and is worth trying. On older MacBook models with Intel processors, resetting the system management controller is also a well-known step for charging problems. Models with Apple silicon processors do not have this procedure; there, shutting the device down completely, waiting for a while and then switching it on again serves a similar purpose.

4. Check the battery health

If you have got this far, the battery is next. macOS reports the condition of the battery directly: in the battery section of the system settings battery health and the number of charge cycles are listed.

• "Normal" — The battery is operating at the expected capacity.
• Status "Service Recommended" — Capacity has dropped noticeably. The device works, but its running time when unplugged is shorter.
• Cycle count — Every full charge and discharge counts as one cycle. The closer the cycle limit designed for the model is approached, the faster the loss of capacity.

Any sign of swelling is an emergency

Stop using the device if any of the following symptoms are present: the bottom cover is swollen or bulging, the device rocks on a flat surface, pressing the trackpad has become difficult, there is a raised area around the keyboard. A swollen battery both presses on the internal components of the device and poses a safety risk. In this situation, do not plug the device in to charge and get it to a service centre as soon as possible.

5. Hardware-related causes

If none of the steps above has produced a result, the problem is inside the device. The ones we encounter frequently in this group are: failure of the board on which the charging port connects to the logic board, corrosion arising after liquid contact, and damage to the power management circuit.

On devices with a history of liquid contact, corrosion can show symptoms even weeks after the contact. For this reason the assessment “nothing happened at the time” is misleading; if there is a history of liquid, be sure to mention it.

If the device does not start at all, the problem may not be related solely to charging; in our guide on the MacBook not turning on you will find a broader diagnostic procedure.

Before bringing it in for service

To speed up the diagnosis, please note the following: the MacBook model and year, the battery health status and cycle count, when the problem began, whether it has been tried with a different cable/adapter, and any history of liquid contact.

At our service centre in Çankaya, we first take measurements in the case of MacBook charging faults and establish whether the problem lies with the accessory, the port, the battery or the logic board side. If a battery replacement is required, we share the capacity and cycle data before the work is carried out.