# NÜWIEL > NÜWIEL develops zero-emission electric bike trailers (eTrailers) equipped with patented sensor technology for sustainable urban logistics, last-mile delivery, and cargo transport. ## Overview NÜWIEL's eTrailers automatically synchronize speed and braking with the pulling vehicle (e-bike, bicycle) or a walking operator via dynamic sensor technology. The trailer handles the heavy payload weight, allowing operators to transport up to 150 kg safely and effortlessly. ## Core Products & Services - [The NÜWIEL eTrailer](https://www.nuwiel.com/etrailer/): Overview of the electric trailer featuring zero-force sensor technology, millisecond-precision speed synchronization, and electric regenerative braking. - [Direct Rental Service](https://www.nuwiel.com/rental/): Flexible eTrailer rental (Flex & Vault models) starting from €9/hour directly from the Hamburg headquarters for private and business use. ## Technical Specifications & Features - **Payload & Capacity:** Up to 150 kg payload / 1.0 m³ volume (fits 1 standard EPAL pallet). - **Drive System:** 250 W electric motor with 48 V swappable Li-Ion battery system. - **Dual Use:** Seamless transition between Bike Mode (up to 25 km/h) and Handcart Mode (up to 6 km/h). - **Safety:** Redundant braking system including electric regenerative brake, overrun brake (EN 15914 / DIN 79010), and electric parking brake. ## Resources & Contact - [Official Website](https://www.nuwiel.com/): Product information, commercial fleet integration, and inquiries. - [Business & Fleet Inquiries](https://www.nuwiel.com/contact/): Contact page for commercial clients and municipalities. - **Primary Contact Email:** moin@nuwiel.de --- For full documentation, detailed use cases, video demonstrations, and company history in a single file, see [llms-full.txt](https://www.nuwiel.com/llms-full.txt).