3rd generation 12.9 iPad pro will not charge since last update.

Verify that your charging cable is properly connected to both your Power Adapter and your iPad.

If the charging cable won’t properly seat or easily fit into the charging port of the iPad, this might indicate that either dirt or lint is obstructing the plug, or the plug or charging socket have been damaged. A damaged charging cable must be replaced - whereas a damaged charging port must be repaired.

If the problem is due to a visible obstruction, you may be able to remove it yourself*. With good light, using a sharpened wooden matchstick or plastic toothpick, very gently try to dislodge a visible the obstruction from the socket. Be careful to avoid damaging the delicate electrical contacts within the socket. Note that a USB-C socket has an obvious "tongue" within the socket.

(*) Removal of an obstruction is often best entrusted to the technicians at the Genius Bar of your local Apple Store or Apple Authorised Service Provider (AASP) - where the appropriate tools and expertise are available:

Genius Bar Reservation and Apple Support Options - Apple

If the charging problem is not mechanical, these support pages should help with troubleshooting battery and charging issues:

Charge and monitor the iPad battery - Apple Support

If your iPad won't charge – Apple Support

Troubleshooting generally requires substitution of the Power Adapter and cable for another known-good item. 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. Many 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.

If you continue to experience difficulties when using an appropriate Power Adapter of 12W or greater, you might be best advised to seek assistance directly from from Apple Support. You can contact the Support Team using the Support link at top-right or bottom-left of this page. Alternatively, you can initiate and manage your support cases from Apple devices using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:

https://apps.apple.com/app/apple-support/id1130498044

You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad, Power Adapter and cable(s):

Genius Bar Reservation and Apple Support Options - Apple

See this article.

If your iPad won't charge - Apple Support

Please have Apple perform diagnostics on your iPhone. It can be done in person at an Apple Retail Store or at an Apple Authorized Service Provider. You can also contact Apple Support and request remote diagnostics.

If you’re in the US, please call  1-800-MY-APPLE, or outside the US, consult the support articles below. In Canada, call 1-800-263-3394.

Contact Apple for support and service - Apple Support

Genius Bar Reservation and Apple Support Options - Apple

Explore Service Locations

Have you tried different cables, chargers and wall outlets? What is the battery health? Have you ever replaced the battery? The battery is 6 to 8 years old and past the expected life of 3 to 5 years old.

Jeff Donald wrote:

Have you tried different cables, chargers and wall outlets? What is the battery health? Have you ever replaced the battery? The battery is 6 to 8 years old and past the expected life of 3 to 5 years old.

Just a point of clarification. While it most certainly could be a failing battery, iPad Pro 3rd gen 12.9" does not show battery health in settings.

Jeff Donald wrote:

I couldn’t remember how far back they went when they added the feature. Thanks for the correction.

The OP will need diagnostics run then.

You're welcome. Battery Health didn't actually arrive until iPad Pro M4. Even my now replaced iPad Pro M1, didn't report battery health.

Jeff Donald wrote:

My wife’s M1 shows battery health I believe. But now that I think about it, it’s through Coconut Battery, a third party app.

Then it's through Coconut Battery as my M1, which I had since it launched and now replaced with iPad Pro M5, couldn't show battery health natively.

I tried all of those options already. Thank you though.🤙

FightingIrish1969 wrote:

I tried all of those options already.

That’s great news. What happened when you followed the “Get suggestions” link under “Need more help?” in the article?

I couldn’t remember how far back they went when they added the feature. Thanks for the correction.

The OP will need diagnostics run then.

My wife’s M1 shows battery health I believe. But now that I think about it, it’s through Coconut Battery, a third party app.

Thank you🤙

FightingIrish1969 wrote:

Thank you🤙

You're very welcome.