Make a Battery a Flashlight  E-mail
Written by Hank Green   
Wednesday, 26 April 2006

9 volt flashlightFalling into the category of “duh” inventions is this little device that pops on the top of a nine volt battery. Suddenly, the candle seems so obsolete! OK, this isn't a complicated post, but you gotta love when we're able to make something that is tiny, cheap, useful and efficient (not only in its use of electricity, but also in the use of materials.)

Pak-Lite says you'll get more than 20 hours on per charge on a nine-volt battery. Of course, if you use this thing on a battery that's not rechargeable, it becomes more a wasteful device than a marvelous toy. So, stock up on nine volt rechargeables and visit 9voltlight.com .


Comments (2)add
Somewhat useful
written by Guest , May 02, 2006
I could see using this for batteries removed from smoke detectors and medical devices. Batteries that are "still good" but must be replaced for safety and insurance issues.
battery
written by lory , January 31, 2008
Verizon is about the only place you can get the authentic RIM product and matching door. Most other sites are out of stock and even when they are in stock they have the black battery door which looks like crap. http://www.batteryfast.co.uk
I tested this camera for a client. I didn’t have the light running for more than 15 minutes. The battery lasted approximately 6 hours before recharging. The LCD, however, had a few dead pixels - never saw this before. Tried returning for exchange and had to put up quite a fight. Anyone else seen this? http://www.batteryfast.com

Write comment
quote
bold
italicize
underline
strike
url
image
quote
quote
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley
Smiley

busy

Hank Green
About the author:

Hank Green is the founder and chief geek at EcoGeek.org. Aside from being obsessed with saving the planet with technology, he loves to write and make videos. If you want to find out more about him, visit hankgreen.com

 
< Prev   Next >

Are You an EcoGeek?

Science, technology gadgets and...baby seals. We're in a bit of an eco-mess, but we've got the brains to lick any problem. And that's why EcoGeek.org publishes up to ten stories daily about innovations that are saving the planet.

And if that sounds interesting to you, then congratulations, you're an EcoGeek.

Weekly Updates

RSS

rss