Causes
- The extra connection the extension cable adds breaks PD negotiation — the PowerExpand's 10cm braided extension puts another plug between your charger and device, and 100W PD pass-through only works if the e-marker chip and CC pins are read end-to-end. If any contact in the chain is only partially seated, the device can't read the charger's capabilities and falls back to the 5V default — the phone charges very slowly or the laptop shows "plugged in, not charging" under load.
- A charger or cable rated below the adapter — the adapter is rated for 100W, but it can only pass through what the upstream charger and cable support. A 60W charger or a USB 2.0 3A cable (common with phone chargers) caps the whole chain, so the adapter gets blamed for a wattage ceiling that actually sits upstream of it.
- A partially seated 90° head — the angle head has to be pushed fully into the device port. A head that looks plugged in but sits a millimeter short makes contact on the outer power pins while the small CC pin — the one PD uses to negotiate — makes poor or no contact, giving you no charging or charging that cuts out when you move the cable.
- Debris in the device's USB-C port — pocket lint and dust in a phone or laptop port can sit exactly on the CC pin. The symptom is identical to a broken adapter: nothing charges, or charging stops the moment the cable is nudged.
- A device-side port or software limitation — some laptops only accept PD on one of their USB-C ports, and some Android phones need fast charging enabled in settings. A USB controller that hung during a sleep/wake cycle can also freeze PD negotiation until the device is rebooted.
- Internal solder failure at the 90° joint — if the adapter has been bent, dropped, or yanked repeatedly, the power rail inside the joint can crack. You'll see charging work at one angle and fail when the cable is moved — a physical failure, not a settings issue.
How to Fix
- Isolate the adapter — plug the charger directly into the device with no adapter in between. If it charges fine, the charger and cable are good and the adapter is the suspect; if it doesn't, fix the charger or cable first before touching the adapter.
- Fully reseat both ends — unplug everything. Push the 90° head into the device port until you feel the retention click, then push your cable fully into the adapter's female end. A partial seat is the number one cause of "no charging" through an angle adapter.
- Clean the contacts — inspect the device port with a light and remove lint with compressed air or a wooden toothpick (never metal). Wipe the adapter's male pins and female socket with a dry cloth or isopropyl alcohol on a cotton swab, then reconnect.
- Check the upstream charger and cable — use a PD charger rated at least as high as your device needs (65W+ for most laptops, 30W+ for phones) and a USB-C cable rated 100W / 5A (the rating is printed on the cable). Swap in the cables that shipped with your devices to rule out a low-rated cable.
- Test a different port and direction — on laptops, try the second USB-C port (some only support PD on one); on phones, flip the adapter so the cable exits the other way. One orientation can seat deeper in the port and restore full contact.
- Reboot the device — restart your laptop or phone to reset the USB controller, then reconnect. This clears PD negotiations that hung after sleep or hot-unplugging.
- Check device charging settings — on Android, confirm fast charging isn't disabled (Settings → Battery); on Windows, make sure the machine isn't in a power-saving mode that throttles USB charging.
- If only one angle works, the joint is cracked — use the warranty — Anker covers the PowerExpand line for 18 months. Contact Anker support at support.anker.com with your order number and a short description of the angle-dependent behavior; they'll ship a replacement.