Portable power and free Wi-Fi to keep smartphones running at Roskilde Festival.

Roskilde Festival and Volt are to secure festival online availability. Along with Roskilde's free WI-FI hotspots, the new festival app, by Greencopper, will send you a Volt-reminder when your phone is running out of power. Volt is a small portable charger that charges your phone in pocket. When it is empty it can be exchanged for a new fully charged, that way you always have power to go.