#swytch
Swytch started a referral programme for anyone to work towards a free kit or at least a discount towards your final purchase. There is no obligation to buy https://swytchbike.com/referrals/?r=b...
Electrify your Brompton. Installation and test run on my own 10 year old brompton. Removing the kit took 5mins unassisted.
review of the pro kit
   • 2021 Swytch Pro Brompton Review after...  

3D print Brompton Luggage block Duc Pham
https://www.thingiverse.com/thing:485...
3D Print the pedal sensor holder for Brompton Duc Pham
https://www.thingiverse.com/thing:486...
3D Print Cap for the Battery Mount LeiEn
https://www.thingiverse.com/thing:491...
Seat tube battery carrier block Chris Capel
https://www.thingiverse.com/thing:489...