Sparticle brought their Brompton conversion kit to market in 2008 and although it isn't a perfect conversion it isn't far off. It is extremely lightweight and still allows the Brompton to fold.
The range and hill climbing are extremely good and so far our testing has resulted in absolutely no component failures....and we have tried.
I hope you find the Brompton Sparticle information below useful, from our experience you are unlikely to need it.
Please contact us on support@ElectricBikeSales.co.uk if you have any further questions.