How to DIY a Hand-Cranked Cellphone Charger (Video)
Image via YouTube video
Hand-crank chargers are kind of a pain in the neck -- or elbow -- but they can be handy for charging gadgets when you're off-grid. There are a handful on the market, but why not just hack your own? If you have a hand-crank emergency flashlight, you're good to go. Ben Heck offers a cool way to modify it into a cell phone charger as a quick afternoon project.
This is somewhat similar to a hack we saw last year that used a hand-crank flashlight and a laptop battery.
If you like the idea but are just not down with using a soldering iron, there's a couple other options we like.
YoGen is probably the most popular and practical hand-powered charger around, with a pull cord that gets more energy out of your muscle power. But there's also the new Power Pump from Orange that uses your feet rather than your hands for power generation.
Follow Jaymi on Twitter for more stories like this
More on Alternative Energy Chargers
Charge Your Gadgets with Small-Scale Renewable Energy
CES 2010 - YoGen Makes a Splash in Pull-String Charging (Video)
Renewable Energy Chargers: 6 We Love and 6 That Will Never Fly