Laptop batteries + Solar panels = Backup travel battery Answered
Here's the thing. I have had this idea for a while now to use some old laptop batteries to make a larger battery cell and some PowerFilm solar chargers to charge them. I have 10 good laptop batteries and 10 PowerFilm AA solar chargers to use. I travel a lot and would like to combine all of these to make a decent travel battery capable of charging an iPhone, iPod, iPad and/or camera batteries as needed.
Seeking some guidance to make this happen. Will be posting an Instructable when I'm fully capable of building this.