Where did you order the batteries from? If from eBay you take your chances. Only supplier on eBay that I would use is torchy. Anyone else I wouldn't touch with a bargepole.
This is important as weve seen fakes out there.
Fogstar.co.uk or 18650.co.uk are the only places I will order from and also others will recommend them. They are both forum vendors on the safe list.
vipertech on eBay, says they are genuine - https://www.ebay.co.uk/itm/2-X-GENU...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
My device wasn't cheap so I do hope they are genuine... Seems to have good ratings, is there any way to tell when they arrive?