Anyone use these. I want it for my ipod nano.Music only with headphones when I hike(maybe 6 hrs per day) on extended trips.5-10 days.What do you think? any one know the weight and how long do you think my ipod would last on one of these plus being fully charged when I leave the car.Also I think you can recharge the biz battery pack from your computer so it isn't a through away item.I'm also looking for other solutions for charging my ipod in the backcountry.(I know I always though it was funny to see people with headphones on in the backcountry but I tried it and I loved it.Not to loud, I can still here mostly everything going on around me.It makes the day go fast.)
