Charging pad/USB power output

[abarlev]

Has anyone had issues with the power outout? It seems like barely 2.1W comming out of those things...
Any way to improve to a 20W output?

 

[Vingnut]

When playing music/videos (use Youtube to play music) or using TomTom navigation my phone can not be charged fast enough to keep its charge on the pad, so I plug in a charger instead. Disclaimer: My Samsung Note 9 is quite old.

 

[Wadda]

Both front USBs are 7W output, the rear one is 12W.

 

[abarlev]

Both front USBs are 7W output, the rear one is 12W.

I don't see how 7W are coming out of my ports... the phone (iPhone 14) loses from the charge it had just by being connected to CarPlay (wireless) and using Waze and music.
I got a charging pad and connected it to the 12V port. Now the phone charges and doesn't slide around.

 

[tsedge]

7W at 5V is 1.4A, which is not a lot. The phone may be drawing more of this with all that it is running at the same time. I would imagine the power to the front 2 USBs is shared.

12W is much more decent, 2.4A, which is the same as many basic USB chargers.

The 12V port supports a lot more (100W? I can't remember), so will drive a much more powerful charger.

 

[siteguru]

120W as I recall, so 10A @ 12V ... maybe 20A @ 5V after conversion using a suitable adapter.

 

[Wadda]

I don't see how 7W are coming out of my ports... the phone (iPhone 14) loses from the charge it had just by being connected to CarPlay (wireless) and using Waze and music.
I got a charging pad and connected it to the 12V port. Now the phone charges and doesn't slide around.

I tested it just using a cheap usb tester. I was surprised the rear was more output than the front.

 

[bobbarley]

I plug my phone into the usb port for apple CarPlay and it surprises me how quickly it charges! (iPhone 15 Pro Max)

 

[AndrewG]

Both front USBs are 7W output, the rear one is 12W.

Where did you get that information from? The manual just shows they're 5V

 

[Coulomb]

Where did you get that information from?

In post 7 (3 posts back), Wadda indicated that he used scheap USB tester.

 

[Wadda]

Where did you get that information from? The manual just shows they're 5V

Yep I tested them when I first got my car.