May I ask where you purchased the battery? Does the battery have a Sony seal/hologram seal? Unfortunately, there are a lot of counterfeit batteries out there, and some even have fake hologram seals. I'm asking you these questions because I think it's odd that the packaging says 'Made in Japan', but the battery itself says 'Made in China'. Maybe it's completely normal for the packaging to say this and the battery says something else, but you never know.