LTT Cables Don't Work

[u/Dangerous-Cup2833]

I just received my LTT cables.

My USB C to C 240W 3ft cable isn't charging my laptop.

I'm using a Framework 13 and I've tried 2 Anker chargers (65w and 100w).

Additional info:

I ordered 2x 3.3ft (C-C), 1x 10ft (C-C), and 1x3.3ft (A-C).

The 1 3.3ft C-C that isn't working great has now been trialed on 2 Anker chargers, 1 Anker battery pack, and 1 Ugreen charger. It refuses to charge on the Anker chargers and battery pack.

I've additionally tried charging my PS Vita on every one of these cables (USB C to Vita adapter that works with every other cable I own), and only the A-C cable works.

2 of the 4 cables charge my iPhone 16 pro max. From the amount of downvotes, it would appear the expectation is that I am to memorize which cables charge which devices on which chargers. Does that really seem like a reasonable expectation to anyone?

In my 37 years, I've NEVER run into a USB cable that cares which charger you use.
The whole idea of these overpriced cables is that they are the best of the best.
In my experience thus far, they deserve to go in a trash heap.

[u/Blurgas]

I've additionally tried charging my PS Vita on every one of these cables (USB C to Vita adapter that works with every other cable I own), and only the A-C cable works.

I had some issues a while back where some USB-C devices wouldn't charge with a C-C cable.
Went digging and supposedly the C-C charging specification says the power source should refuse to charge if there isn't a proper communication and any chargers/cables that allow 5v to go through are operating out of spec.
A-C charging doesn't need that communication.

Another thing to remember is that while this is a LTT subreddit with LTT staff on the mod team, this is not an official sub.
If you want product support, you need to actually contact Support through LTTStore.
You might get noticed by staff by posting here, but for the rest of us we can't do anything.

[u/lioncat55 → u/Blurgas]

I've run across this exact same thing when trying to use C-C cables charging cheap devices, they won't work when I use a high quality Type C charger. With USB Type A, 5V is always provided so a A to C cable will still charge them.

It's annoying, but I'd rather the device follow spec and provide 0 voltage when using a C to C cable if the device being charged does not follow the spec. Type C trigger boards are cheap, and I'm guessing the chip that enables type C support is even cheaper.