Cordless Vacuum Cleaner, Japanese Panasonic Model (Millwall E14)

Bagless vacuum (does not require any bags to operate). Model name MC-SBU510J. This is a Japanese import with a UK socket adapter. While the vacuum seems to works and the battery seems to holds, the suction strength is too low for me. I'm not sure whether this is normal but it is just to weak for my liking. It seems to vacuum basic dirt but it's not strong enough for me.