About Us


E-Rider provides a one-stop battery solution for electrical mobility, including electric bicycles, electric wheelchairs, and electric scooters.

We supply battery components and parts, batteries, batteries cases, and drive system apparatus.

As a pioneer to minimize carbon emissions, all-electric vehicles are powered by environmentally friendly Lithium-ion, contributing to a greener environment.



Mondia is a longstanding bicycle brand since 1933 and has made the history of modernized bicycle production in Switzerland.

Since 2014, Mondia brand has joined PortaPower Group and works alongside with E-Rider to deliver the highest quality electric bikes with innovative design.

One of our signature product is the foldable electric bike that weighs only 20kg. We wish to motivate you to swap the car for a sustainable electric bike.


Customer Service Centre

Silver Centre GmbH

Am Treptower Park 28-30 (Haus D2)

12435 Berlin

Tel: 030-60985356

Fax: 030-60985358

Email: info@silvercentre.de


Opening Hours:

Monday - Thursday hrs. 9:00 - 15:00

Friday hrs. 9:00 - 14:00