Incomplete delivery, low autonomy and bad times of the support I paid more than 1000 Euros for the max version of this kit by taking all the options for my Brompton and paying more to be delivered faster, on arrival the delay was very long with a deposit on September 14, 2022 and delivery mid-May 2023. No courier informed me of the delivery and it arrived while I was on vacation, fortunately I had given the address of my company for delivery, the disadvantage is that I lost the 15-day period that allows to cancel the order. the delivery arrived incomplete with the Brompton Block absent. About this I had two different responses from support, the first told me that there was no trace of my order of this block, so I sent a screenshot of my order and the second response to talk about a quality problem that had to be fixed to meet the quality standards of Swytchbike and that I will receive later the Brompton Block. Having already assembled a kit of another brand the assembly was done without difficulty and it is true that its design is rather well done and that if you are lucky this kit can be very pleasant, but with so many unfavorable opinions it is really a lottery and in my case I lost. In operation I saw that the battery planned for 30 km in normal assistance and 39 km with the minimum assistance which is the one I use never reached 20 km on flat terrain with the assistance at least despite my weight in the average (81 kg) and a bike under 18 kg. In addition the led display integrated into the battery indicating the level of charge does not work properly, even emptied to the maximum the battery always 3 LEDs of lit which suggests a charge to 60%. After many exchanges on these problems where I gave and repeated the same information to different interlocutors, the after-sales service considered that the battery had no problem despite performance almost 50% lower plus a defective charge display and allowed itself authority to close the ticket. If this kit is not defective, the announced autonomy is really exaggerated, I had planned to equip my wife's bike with this kit, for sure I will never do, this brand is to flee absolutely, I consider that I was fooled by more than 1000 euros and that I will not let pass.