36 V battery ensures good independence, assistance is well proportioned (particularly powerful start), depending on the pedaling. the derailleur is useless (I'm still on the smallest sprocket). must grind a bit to wait for the 25km / h (it would have taken a larger tray - I think to change it). I always put the maximum assistance. no problems after 800km. everything is still original (brakes and tires in particular). I fell several times (wet weather) without damage to the bike that is robust. the bike folds quickly. however, it is quite heavy (like all electric bikes). I live in Paris and uses the bike in all weathers. I'm faster than metro. I 1km high hill up to my work, which climbs smoothly and effortlessly - no need to shower in!
in short: great product, damage to the speeds that are not used (would have saved weight not to put it).
