Para quem fizer viagens grandes, onde pode ficar sem acesso a electricidade durante algum tempo, este gadget parece-me fenomenal:
www.bumm.de/index-e.html?docu/361e.htm
- connected to the hub dynamo, the "bike mobile" E-WERK provides electric energy for a multitude of applications
- voltage (up to 13.3 V) and current (up to 1.5 A) are set in small increments so that all mobile phones, GPS, radios etc. can be powered or batteries charged while cycling, without unwantedly high currents or voltages causing damage to connected devices
- negligible idle losses (only 0.03 W at 30km/h)
