Amazon.com.au:Customer reviews: Nillkin 15W Fast Wireless Charger, Powerflash Wireless Charging Pad with Cooling Fan Compatible with iPhone Xs Max/XR/XS/X/8/8 Plus, Samsung Galaxy S9/S8/Note 9 and Other Qi-Enabled Devices
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Bought one for self and one for girlfriend. Girlfriend has already stopped using hers because it's so unreliable -- she often has to lift her phone (Galaxy S10+) off and put it back down multiple times before it begins charging, sometimes taking a full minute to make it work.
Several times I (Pixel 4XL) have placed my phone on it to charge, only to come back 30 mins later and realise it hasn't been charging.