Mine lasted 12 hours with the music playing.. if it's just on without any talking or music playing.. it should last longer.. you can charge it on the go with a USB cable plugged into a USB to bmw socket.

 

Dan this is one of the reasons that I stayed with a corded helmet. I just finished a 16 hour day and I do not know of a Bluetooth system that will run that long with out being plugged in to be recharged. Plugging in a bluetooth helmet sort of defeets the reason for getting a bluetooth helmet. Yes I do have a Schuberth for around the town quick trips.

 

Did 16 hours yesterday with my Scala G4 & still had power.

 

You can charge it while you ride - just bring a USB to mini-USB cable and plug it in the USB slot. You can even leave the bluetooth turned on while charging.

 

As you know, the battery is huge releative to something like a Scala G4's built-in battery. My experience is that if you are ony sporatically using it to generate music in the headset speakers (a significant drain, it will go well beyond 12 hours.

On-board charging isn't an issue, if you are willing to live with a cord from one of the power outlets to the helmet (with a 12V-to-mini-USB 5V cigarette lighter converter in the line). Not that I believe it would be necessary, but for "belt-and-suspenders" sake, you could install the charger wire at a gas stop at around the 10-12 hr point, and then remove it at the next gas stop.

 

Thanks - The mini USB to the bike will work. Got a cable that will work...

 

Thanks - The mini USB to the bike will work. Got a cable that will work...

Good -- double-check that the mini USB plug fits, as although "mini USB" is a standard, occassionally variations crop up and result in a no-fit situation. Better to know in your garage than on the road!