Battery Converter (Chinese AA to UK/EU/US AAA)

Lucky Cat isn't so lucky. He is Chinese made and uses x1 AA battery. However, it appears a Chinese AA is not the same size as a UK/EU/US AA battery (Chinese is smaller). Couldn't source additional Chinese AA's so I converted lucky cat to a UK/EU/US AAA with a simple insert (same voltage). To make the -ve connection simply cut down and screw in a 3mm flat head-hex bolt.