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Slow Magsafe Charging

402 views 22 replies 7 participants last post by  Lance Corporal Waffles  
#1 ·
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I have a 25 GRC Premium Plus and an Apple iPhone 15 Pro. I have a Magsafe charger connected to the USB-C charging port in the center console. I've noticed that the charger works and the cell phone shows that it is charging but does so very slowly. For example, I drove the other day for 30 minutes and the battery level went from 70 to 75 percent. In my other car (a Ford Bronco with a different brand Magsafe charger) the phone charges much faster.

I have tried using aftermarket and Apple USB-C to USB-C (60watt) cables with no difference in charge rate.

Any ideas for what could be causing this? Is the Magsafe charging base the limiting factor (15w)? Thanks for your help!
 
#4 · (Edited)
I only get about 10 watts out of the USB-C port, plugged straight into it. I have a 160 watt charger plugged into the 12v outlet for when I have high power needs.

Toyota claims it is 15 watts max in the manual.

Personally, I don't use wireless charging because it keeps the battery hotter than wired charging.
 
#6 ·
I only get about 10 watts out of the USB-C port, plugged straight into it. I have a 160 watt charger plugged into the 12v outlet for when I have high power needs.

Toyota claims it is 15 watts max in the manual.

Personally, I don't use wireless charging because it keeps the battery hotter than wired charging.
I just love the convenience of not having to plug in a charging cable directly to the phone. And the wireless charging pad under the dashboard is borderline useless.
 
#8 ·
A 15w USB port won't be able to transfer 15w of charge through an induction coil to the phone. Its convenient, but pretty inefficient and loses around 20-30% of the energy. Worse if there's anything affecting proximity, like a case.

If a Qi charger is advertised for 25w, the question I'd like to know is where are they measuring 25w. Is the Qi charger drawing 25w from the power source (maybe getting 15-20w into the phone) or is the phone actually charging at 25w, which means the charger is drawing more like 30-35w from its source.
 
#10 ·
A 15w USB port won't be able to transfer 15w of charge through an induction coil to the phone. Its convenient, but pretty inefficient and loses around 20-30% of the energy. Worse if there's anything affecting proximity, like a case.

If a Qi charger is advertised for 25w, the question I'd like to know is where are they measuring 25w. Is the Qi charger drawing 25w from the power source (maybe getting 15-20w into the phone) or is the phone actually charging at 25w, which means the charger is drawing more like 30-35w from its source.
Hadn't thought about the case (which I do have) as a limiting factor. Thanks!