Ford Transit USA Forum banner

Forum Discussions about this Product

1 - 2 of 2 Posts
    1. · Registered
      2021 3.7 AWD HR 148
      Joined
      ·
      223 Posts
      I have had poor luck with the small round "USB-C + USB-A" sockets from Amazon. The unit I got claimed to be 60W but if I plug my Steam Deck into the USB-C it gives me a "slow charger" notification. It does charge, but not at a high enough rate to use the device without running the battery down. So that's less than ~28W actual power delivered via USB-C, probably a lot less.

      Did I just buy the wrong thing? These PD units seem to claim 65W from a single PD port.
       
    2. · Registered
      2020 High-Extended AWD EcoBoost Cargo with windows
      Joined
      ·
      4,891 Posts
      I have had poor luck with the small round "USB-C + USB-A" sockets from Amazon. The unit I got claimed to be 60W but if I plug my Steam Deck into the USB-C it gives me a "slow charger" notification. It does charge, but not at a high enough rate to use the device without running the battery down. So that's less than ~28W actual power delivered via USB-C, probably a lot less.

      Did I just buy the wrong thing? These PD units seem to claim 65W from a single PD port.
      The problem is devices don't all do a good job of negotiating their PD profiles. I have a couple of USB measure devices - one USB-A and a couple others with USB-C w/ PD - that I bought to try to understand these issues. It's weird to see what charging each device negotiates. To make things even stranger, sometimes the insertion of the measuring device affects the power as well. 🤷‍♀️

      Basically, it's a trail-and-error thing. Just confirming that the output and input devices both claim to have the same PD profiles /still/ doesn't assure they will negotiate as they should.

      While USB is always 5V (with output from a few hundred mA up to ~3A or so), USB-PD can be 5/9/15/20V with up to 5A at each of those voltages. But the two devices need to negotiate for what each supports. So 65W output might be something like 13V/5A and the output might not support 20V; but your device might want 20V @ 3.25A to get 65W. So they'd fall back to 3A @ 15V and you'd only get 45W. Stuff like that...
       
1 - 2 of 2 Posts

Forum Reviews

Be the first to review this product

Write a Review

Do you have experience with this item? Help our community members and share your knowledge.

Sign in to add review

Top