If you’re gadget-making inclined, here’s a very cool and practical iPhone charging solution by Wisconsin man Joshua Zimmerman. According to Zimmerman, his invention takes only between 30 to 60 minutes to create and costs around NZ$25.
“I love my iPhone 4 to death. I really do. Even if it sucks juice faster than a 1st grader at snack time and I often find myself on low power with a long train ride ahead of me,” writes Zimmerman.
2x AA Battery Holder
2x Rechargeable Batteries
1N914 Blocking Diode
Solar Cell greater than 4V
Hot Glue Gun
If some of these parts are perplexing you, don't worry, Zimmerman has a parts kit available for purchase on his website.