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How to Build a 9v Battery Powered USB Charger
The concept is simple; USB power is 5V. To have a charger that produces exactly 5V you need a voltage regulator. Such a regulator is the 7805 model you can get at Radio Shack for $1.59. This will take... Read more
http://www.anythingbutipod.com/archives/2009/10/how-to-build-a-battery-powered-usb-charger.php
Tags: usb, diy, electronics, charger, battery, hacks, iphone, hardware, projects, howto Saved by: admin at 05 Nov 2009

An Exhaustive Guide to Saving Your Smartphone's Battery - Battery - Lifehacker
Modern phones come loaded with bright screens, fun games and apps, and connections for 3G, Wi-Fi, Bluetooth, and GPS. Not coincidentally, they're constantly out of juice. Here's some of the best colle... Read more
http://lifehacker.com/5375325/an-exhaustive-guide-to-saving-your-smartphones-battery
Tags: battery, iphone, batteries, tips, lifehacker, smartphone, guide, phones, mobile, cellphones Saved by: admin at 07 Oct 2009

New battery could change world, one house at a time
Inside Ceramatec's battery is a chunk of solid sodium metal mated to a sulphur compound by an extraordinary, paper-thin ceramic membrane. The thinner the barrier between the sodium and sulphur, the co... Read more
http://www.heraldextra.com/news/article_b0372fd8-3f3c-11de-ac77-001cc4c002e0.html
Tags: battery, energy, technology, solar, science, batteries, electricity, grid, solarpower, tech Saved by: admin at 14 Aug 2009

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