Eternally Broken Fast Charging on My Apple Watch

Eight point five completely broke fast charging on my series seven apple watch with the otherwise very good and very nice belking charger that i have. So my watch is fully up dated to the latest version of wat y has, it doesn't fast charge any more. It's slow charges now, meaning that once it dies on me and i place it on the charger, i can pick it up the next day to have it be at a hundred % again. I want to see very upset.