Moto360 Battery

Sorry to write in English, but does anyone know where I can change the battery for Moto360 1st generation?
I called 臺灣 摩托羅拉客戶服務中心, but they say Moto360 not imported to Taiwan so no battery change.
Went yesterday to 臺灣 摩托羅拉維修中心, can also not change.

Cheers
Tom