My GPD Win 4 battery decided to go spicy on me, bought a replacement from aolstecell since they said they had a US warehouse. It took 14 days to deliver, which is about as long as it would take to get one from China... and they used a Chinese carrier for the first leg of the trip... I think they're just trying to hide that it's just a reshipment site instead of a warehouse.

Plus, the screwdriver they shipped with it was too fat to fit the screw holes of the system...