I have an ipad pro m1 12.9 connected to a 4k60hz external display and a wired keyboard (with led), I use the 20w charger that apple provides in the box of the ipad pro. The ipad charges very slowly when connected to the wired keyboard. If I connect to my 4k60hz display, how many watts of charger do I need?
iPad Pro, iPadOS 18
Consider that the connected USB-C Adapter/Hub and other connected devices also require power to operate - as does your external screen that presumably has its own power source. The Power Adapter obviously requires adequate capacity to power all connected devices - and ideally have sufficient output to simultaneously charge the iPad.
Your iPad iPad Pro requires at least 12W to charge - will optimally charge when using a USB-C 20W Power Adapter.
A higher-output Power Adapter provides a greater “power budget” - allowing other devices to receive power while maintaining the iPad’s maximum 20W charging rate. Will you will need assess your power needs to calculate your power budget. When using a USB-C hub will USB pass-through power, this connection will have a stated specification. While using a more powerful Power Adapter will cause no harm whatsoever, it will provide no significant benefit. Using a Power Adapter matched to the pass-through specification of the hub is ideal. If you are powering the external display over USB, then you will require considerably more power, typically 40W or greater.
As an example of calculating your power needs - a USB multiport hub may typically require 10W power; connected USB devices (external storage, keyboard, mouse etc) also draw additional power from the source (typically 2.5-10W each). If the connected load exceeds the available supply, the iPad may not charge - or may charge at a substantially slower rate. In extremis, both the iPad and Power Adapter will share the connected load - and the iPad may actually discharge its battery to make-up the shortfall in available power from a connected Power Adapter.
You should note that while Apple devices generally support USB PD, they do not support other charging standards - such as QC (Quick Charge).
Consider that the connected USB-C Adapter/Hub and other connected devices also require power to operate - as does your external screen that presumably has its own power source. The Power Adapter obviously requires adequate capacity to power all connected devices - and ideally have sufficient output to simultaneously charge the iPad.
Your iPad iPad Pro requires at least 12W to charge - will optimally charge when using a USB-C 20W Power Adapter.
A higher-output Power Adapter provides a greater “power budget” - allowing other devices to receive power while maintaining the iPad’s maximum 20W charging rate. Will you will need assess your power needs to calculate your power budget. When using a USB-C hub will USB pass-through power, this connection will have a stated specification. While using a more powerful Power Adapter will cause no harm whatsoever, it will provide no significant benefit. Using a Power Adapter matched to the pass-through specification of the hub is ideal. If you are powering the external display over USB, then you will require considerably more power, typically 40W or greater.
As an example of calculating your power needs - a USB multiport hub may typically require 10W power; connected USB devices (external storage, keyboard, mouse etc) also draw additional power from the source (typically 2.5-10W each). If the connected load exceeds the available supply, the iPad may not charge - or may charge at a substantially slower rate. In extremis, both the iPad and Power Adapter will share the connected load - and the iPad may actually discharge its battery to make-up the shortfall in available power from a connected Power Adapter.
You should note that while Apple devices generally support USB PD, they do not support other charging standards - such as QC (Quick Charge).
I routinely use a USB-C hub with a multi-port 120W USB-C Power Adapter, this being sufficient to charge the iPad via the USB-C hub and all connected devices - and sufficient additional power outlets to simultaneously charge an iPhone and other devices.
If you are only powering the iPad, hub/Adapter and keyboard, you may find that a 30-35W USB-C Power Adapter will be adequate for your needs. If purchasing a third-party Power Adapter, ensure that it supports USB PD (Power Delivery); Apple devices do not support QC (Quick Charge) or other proprietary charging standards. All Apple Power Adapters support USB PD.
Thanks, with the separate monitor I have an external power source, my hub is connected to a wireless mouse and a wired keyboard with led, I think with 20 watts from the charger in the box of the ipad pro can only charge the ipad but not enough for the other 2 devices
Can you tell me how many watts the ipad pro receives max
Many recent models of iPad have a maximum charging rate of ~28W and will optimally charge at 20W. The minimum is 12W.
Thank you so much, i think i will buy 35W charger is okay for charge ipad and wired keyboard
You're very welcome.
How many watts charger is needed for ipad pro to output to a separate screen and connect to a wired keyboard?
