Since we released Drop Scale in 2014, it has become increasingly difficult to find the CR2477 battery in local stores. For this reason, we highly recommend ordering the battery online instead of hitting up home improvement stores or battery specialists. Here are a few options:  

USA
Amazon — sold by Ansmann, Prime eligible

UK
Amazon — sold by Ansmann

IRELAND
Farnell

AUSTRALIA
Element 14

CANADA
Coincellwarehouse.com

REST OF THE WORLD
Click here to search Google for a suitable local retailer