Mensagem original de: Luis ,
Most places sell the Apple Watch battery with very little to no charge in them, therefore not enough juice to be able to boot up the watch. I bought two batteries with same results as yours. I ended up just getting a battery tester/charger from eBay (took 15 days from china) with a watchOs battery connector to charge my battery before installing it. I saw someone post here with the same issue. They ended up getting a battery from Amazon and it worked.