I have been to the Genius Bar. They plugged my iPad into a working charger. Nothing. I get home and plug into my Mac, all works fine. Simply does not work with external chargers.
iPad Pro, iPadOS 18
My mac charges my iPad fine. Apple’s 20W, 35W, 60W and 96W all do not charge. This was confirmed in an Apple Store. They tell me the port is dead. How come it charges fine off a Mac, just not from any chargers, including Apple ones?
Also, as I discovered, Apple does not repair these. They give you a refurbished at reduced rates.
My mac charges my iPad fine. Apple’s 20W, 35W, 60W and 96W all do not charge. This was confirmed in an Apple Store. They tell me the port is dead. How come it charges fine off a Mac, just not from any chargers, including Apple ones?
Also, as I discovered, Apple does not repair these. They give you a refurbished at reduced rates.
Most models of iPad require a Power Adapter rated at 12W (i.e., 2.4A @5V) or greater to reliably charge. 5W Power Adapters (1.0A @5V) intended for older models of iPhone are inadequate to charge an iPad; if the iPad charges at all, charging will be very slow. Recent models of iPad are supplied with a 20W USB-C Power Adapter.
Some third-party USB-C power adapters (and portable PowerBanks) may not support USB PD (Power Delivery). Power Delivery mutually negotiates the charging voltage; the source, load and cable are all elements involved in the negotiation protocol. Unless the Power Adapter explicitly supports USB PD, it will almost certainly fail to charge the iPad; proprietary charging standards, such as QC (Quick Charge), are not supported.
Many computer USB ports don't support USB PD, instead supplying the older standard 5V USB bus voltage to power (or charge) connected USB devices. If your iPad can charge when connected to a standard USB Type-A port that is capable of 12W (2.4A @5V) or greater, but cannot charge from a USB-C power source, this would suggest a failure of the iPad's USB-C charge controller. In such circumstances, the iPad may require repair.
If you continue to experience difficulties when using an appropriate Power Adapter of 12W or greater, you would be best advised to visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to hands-on test and assess your iPad, Power Adapter and cable(s):
Genius Bar Reservation and Apple Support Options - Apple
SW11 wrote:
My mac charges my iPad fine. Apple’s 20W, 35W, 60W and 96W all do not charge. This was confirmed in an Apple Store. They tell me the port is dead. How come it charges fine off a Mac, just not from any chargers, including Apple ones?
Also, as I discovered, Apple does not repair these. They give you a refurbished at reduced rates.
When charging from the USB port of your Mac, you will likely be charging at standard 5V USB bus voltage - limiting the charge current to ~2.4A (12W). By contrast, your USB-C Power Adapters will be using USB PD (Power Delivery).
When using USB PD, the Power Adapter and the charge-controller of connected device (in this case your iPad) mutually negotiate a higher charging voltage, this permitting higher power transfer while keeping the charging current at manageable levels. Higher current requires much larger conductors within cables.
Your description strongly suggests that your iPad's charge controller is failing in work with USB PD, but can still accept charge at 5V supplied by your computer.
SW11 wrote:
My mac charges my iPad fine. Apple’s 20W, 35W, 60W and 96W all do not charge. This was confirmed in an Apple Store. They tell me the port is dead. How come it charges fine off a Mac, just not from any chargers, including Apple ones?
Also, as I discovered, Apple does not repair these. They give you a refurbished at reduced rates.
We can't diagnose your Mac or iPad from the internet. While you were at the Genius Bar you should have asked them that question.
Why does my iPad only charge from a Mac not a charger?
