The other day, my home had power-outage for like 6 hours. I could go buy a UPS (Uninterruptible Power Supply), or I can make my own UPS using a car battery.
Well, I am just hoping this DIY UPS lasts 6 hours so I can keep using my spare laptop, which shouldn’t need that much power anyways to run off the UPS. But if I tried
Check out this howto on doubling your battery life by replacing a linear voltage regulator (the thing that converts DC voltage, e.g. from 12V to 5V) to a switching regulator. Switching regulators are way more efficient than your typical off-the-shelve crappy regulators such as 7805 which get too hot too fast. Get the Dimension Engineering regulators here. This howto could easily be appl
video://www.youtube.com/watch?v=7cL3OUAAmz8
Wow, this is some great stuff…i am jealous…hehe… I need 3G…noW!!!
I’ve received my (Cingular) Samsung Blackjack and here’s a video that shows what’s in the box. After a full charge and a few problems with the service activation (Amazon screwed it up, apparently) I got the thing up and running with UMTS (3G) data connect. After a couple of hours, my first impression is that it blows the pants of my Treo 700w in virtually every aspect. I’m currently testing the battery life so keep an eye on Ubergizmo
