Probably an elementary question, but my phone charges much faster from my iMac than it does from the standard wall charging little brick. I think the bricks are 5w? Any idea how much charging power the iMac is delivering to the phone? It's a new iMac, bought in 2020. Thanks!
iMac 21.5″, macOS 11.2
Welcome!
Well, one question begets others. Apple does not publish the port power, and other sources are in varying units, such as watts v. milli-amps. An iMacUSB 3 port can provide up to 900mA.
Are you using the USB3 or the Thunderbolt ports on the iMac to charge?
The current small-format Apple charging bricks are now up to 20W, and the Apple Store still lists 5W, 12W, and up to a 30-watt brick that are all compatible with most newer iPhones, so this depends on which iPhone model you have as well.
We have several iPads but no iPhones. I've not noticed enough difference in charge time between using one of our Macs or wall power to think to time the charge cycle. However, I have noticed charge time differences among the rather embarrassing collection of charging cables we've accumulated since getting iPads 10 years ago. Apple cables seem to charge faster and stay cooler than the off-brand stuff.
Awaiting your followup info...
AJ
I was using the Thunderbolt port and it's plugged into my iPhone 12.
I'm curious because, this faster charging speed usually leads me to bringing the phone into my office to charge on the iMac. But perhaps if I invested in a new and more powerful brick, I would gain the same speed elsewhere in the house. Most of my current bricks are pretty old.
What is the Phone charging power of my iMac (in watts)?
