Both your card & charger seem to work correctly.
I had one wireless card which kept displaying a message that the phone is on slow wireless charging each time I place the phone on the charging pad. I replaced it with a Nillkin USB C card. The problem is gone.
Try to soft reset the phone to see if the problem disappears. If no, the problem comes from the wireless card.
The main reason I like wireless charging is convenience. No need to plug & unplug and phone is always well charged.
I ordered a Nillkin receiver yesterday. I'll post the results here after I roadtest it, assuming that
it makes a difference in how the phone reacts when I place it on the charger.
Brjik--the Nillkin receiver arrived today, and I immediately slapped it on the LG V20. It's charging now on the Chotech single coil charger, and the picture of how-to-plug-in your phone, etc. has not appeared. The Nillkin receiver is working beautifully, and I thank you for your absolutely accurate, flawless recommendation. Ralph L. Seifer
I think yes, because the charger & wireless receiver cannot be separated by metal.crazy.. with the V10 i was able to add a wireless charging/NFC sticker inside the backplate so its like a factory wireless charging solution and no usb plug hanging out.
Are you are saying that cant be done with the V20 due to the metal backplate?