Even though I didn't buy battery from PSW I have just gone through the rigmarole of having to use PayPal for a Ali-express ‘original Samsung 30ah 48v battery‘ that after being delivered in a plan brown box, turn out to be a ‘who knows 16ah‘ after testing. At least it was 48v.
Paypal made me jump through hoops, even asking for a letter from the post office refusing to allow postage. (I had uploaded photos of every conceivable couriers web pages refusing to take a e-bike battery’s.)
Then suddenly they paid out after two weeks of emails and phone calls.
Ali-express seem to freeze the transaction as soon as i contacted PayPal, even though they refused to help, just giving me a address to somewhere in the uk that when I checked on google earth was in the middle of a industrial estate in the middle of nowhere. Lesson learned only buy small items of no great value fro All-express.