It took me quite a while to research this; I thought I'd save other people the grief. The problem I had was, I knew what the connectors looked like, I didn't know what they were called. And I couldn't find an ebike vendor that sold connectors.
I find two main types of connectors on ebikes. There's the white ones such as the one that's used for connecting the halls on the motor to the controller. Those are 6-way (in a 2 by 3 layout); there's also 2-way and 3-way versions of those. To find them on Ebay, search for "2.8 mm connector"
The other type I see a lot of, are black, with all the wires in a row. To find those, search for "jst 2.5 sm". You can get 2, 3, 4, 5 or 6 way connectors.
Phase wires are usually connected with tiny bullet connectors; when I look at them, I don't have a lot of confidence in them, so I cut them off and replace them with 4mm bullets. But if you really want them, I think they're "Bullet Connectors 3.9mm" on Ebay, and their main advantage is that they're very, very cheap; I got 10 pair, with sleeve, for £2.66.
Power wires, when they do have a connector, have all sorts, but to find one commion type, search for "6.3 mm electrical connector". I replace them with EC5 connectors, because I have to plug and unplug frequently; partly to charge up, and partly because I use the same batteries for all my bikes. EC5s seem to make a good connection, and yet you don't have to fight with them to get them apart.
I find two main types of connectors on ebikes. There's the white ones such as the one that's used for connecting the halls on the motor to the controller. Those are 6-way (in a 2 by 3 layout); there's also 2-way and 3-way versions of those. To find them on Ebay, search for "2.8 mm connector"
The other type I see a lot of, are black, with all the wires in a row. To find those, search for "jst 2.5 sm". You can get 2, 3, 4, 5 or 6 way connectors.
Phase wires are usually connected with tiny bullet connectors; when I look at them, I don't have a lot of confidence in them, so I cut them off and replace them with 4mm bullets. But if you really want them, I think they're "Bullet Connectors 3.9mm" on Ebay, and their main advantage is that they're very, very cheap; I got 10 pair, with sleeve, for £2.66.
Power wires, when they do have a connector, have all sorts, but to find one commion type, search for "6.3 mm electrical connector". I replace them with EC5 connectors, because I have to plug and unplug frequently; partly to charge up, and partly because I use the same batteries for all my bikes. EC5s seem to make a good connection, and yet you don't have to fight with them to get them apart.