I have a Brompton and converted it to electric using a switch kit, battery fits on front handle bar and just clips on /off so can be charged inside had it about 3 years now and it’s excellentVery Very similar to one I bought a couple of years ago from UK supplier
Brilliant company with unbelievable aftersale service and they carry all spares so no problems if you want disc pads or even wheel nuts. Can reccomend them 150% so have a look and see if you can find the combination that suits you.E-Go Lite+ Folding Electric Folding Bike | E-Go Bikes
A new addition to the growing E-Go folding electric bike family. The E-Go Lite+ folding bike features 20" wheels and 7 speed Shimano gears.e-gobike.co.uk