>I'm curious how people charge and store these vehicles, since most people in Chinese cities live in multi-story dwellings -- I guess they must lug the batterie

>I'm curious how people charge and store these vehicles, since most people in Chinese cities live in multi-story dwellings -- I guess they must lug the batteries upstairs with them at night? I charge mine downstairs together with a lot of other electric bikes. It costs me 30 RMB per month to charge. My neighbourhood is a typical Chinese one - i.e. not one of those fancy foreigner compounds. My bike has a range of around 40-50 km depending on how many people are on the bike and how I drive it. It doesn't look like the one in the picture you sent. More like a traditional motorised scooter - just with a battery. I paid 3000 RMB for it (new). It even comes with built in Bluetooth speakers, so I can annoy my fellow drivers on the street and people taking a stroll in the park with loud death metal music.