So, I’ve hooked up my Amazon Chinese 65w USBc PD aux port to a 12V battery on the bench. The battery showed 12.2V before getting started.
I’ve got a 100w PD smart cable with LCD display running to the USBC on my Lenovo laptop, which has a 65w wall charger.
The LCD on the cable is showing fluctuation in delivered wattage as the smart chip in the cable negotiates with the laptop for charge needs. It shows between 10, and 50 watts.
The laptop is currently at a 5% deficit from full, and I’ll leave it setup to see if I can get the laptop to charge while in hibernate mode.
I’ve also got the battery clipped on to a 12V trickle charger, I’ll give that a try to see if it mimics an alternator delivering current to the battery, and if that changes any of the energy delivery.
Sofar I haven’t blown any fuses, melted anything or noticed any heat generated in the lines, and the laptop is recognizing energy delivery, the question is how quick is it. I’ll let it continue for 1/2 an hour longer and report back.