The upgraded Pixel Stand gets detailed in leaked marketing material. It charges faster, has active cooling, plus more. It's a good upgrade.
Pixel Stand 2 Realign phone for faster charging
Google's new Pixel Stand wireless charger brings much higher speeds for the same price - PhoneArena
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Google's Pixel Stand 2 changed my mind about wireless charging
Google Pixel Stand (2nd Gen) - Wireless Charger - Fast Charging Pixel Phone Charger - Compatible with Pixel Phones and Qi Certified Devices : Cell Phones & Accessories
Pixel Stand (2nd Gen) charger review
Google Pixel Stand (2nd Gen) - Wireless Charger - Fast Charging Pixel Phone Charger - Compatible with Pixel Phones and Qi Certified Devices : Cell Phones & Accessories