Why not use sun & solar panel to charge it?

Solar panel can’t generate good energy, it’s very small. We already tested it.

How about adding some fans that power/recharge the device while driving?

We considered the idea with fans, but they provide too little energy to be worth of being used (and make too much noise).

Very good idea, to solve the battery life, could you not have USB plug into motorcycle battery while riding, like normal Sat Nav technology, then release the USB cable when dismounting the motorcycle?

The supposed battery life is going to be long enough. Nevertheless, you can charge your helmet during a stop (you probably make stops to have a rest, don’t you?). We think that having a cable that connects your bike and your helmet is unsafe while riding.

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