(Since this is the topic Google refers me to when searching for the motor KKM100SX, first post on the forum; hello everyone!)
I had a look in person at the white e-bike OP was referring to, I found out the following, sorry about all but 3 of these being off topic:
It has been branded Neuzer Palermo, Kellys SLF001, and StoneFly E-Bike in the past, with various prices ranging from 555 EUR to 699 EUR
minimum seat height is ~53 centimetres on the women's version, that means a teenager could use it as well as an average adult (I'm 173 cm tall, I need 73 cm from centre of bottom bracket to top of the saddle) I didn't check the max, but assume 80cm-ish since it's a 19 inch sized frame on the women's version
the thing on the handlebar is indeed a Suzhou Kunteng KT-LCD1
walking assist works
the battery pack is about 38 cm long, therefore it might be the Portapower YL-TFH1, 313 Wh mentioned above
the hub motor has this written on it: akm160600691 bbe3628a
i've attached a picture of the battery connector I've taken
light is "Kendo by Spanninga" whatever that might be
[mention=29065]hyperknot[/mention] did you buy the bike? do you like it? I'm thinking about getting one as well.