The range extender from House of RAT gives you additional range. Mounting via the feedlock system, which can also be used as a bottle cage, offers you great flexibility. The connection cable is modified depending on the bike type. The range extender is waterproof and has a sturdy housing from the 3D printer. Adaptations to the bike are therefore easy to make. The integrated software BMS monitors the cells and can be controlled via an APP. The charging and discharging port is an XT60 connector. A 2 A charger is supplied. SAMSUNG cells with a maximum discharge current of 20 amps are installed. For problem-free operation, a dual battery balancer must be installed in the bike. This allows the bike to be operated simultaneously with both batteries or without the main battery. The range extender can be adapted to many bike brands.