Di2 battery down

[robingoode]

Hi everyone just struggling to find a battery locally or internationally for my dura di2. Anybody have a second hand one or know of any other solution?

Any other wisdom or experience would be greatly appreciated. My race bike is down and chomping to ride her. 
 

This is the one:

Shimano BTDN110A1 Internal Battery Groups DI2 ETUBE 110A1 R, Black, 1

Thanks, Robin