pic: Guts of mobile AC powerplant

[Mike AA]

Originally Posted by suneel112

I had an old ghetto (one zipper broken) rolling backpack that I was going to trick out.
At the beginning of the summer, I thought I would have a good summer job ($1000-1500 for the whole summer, 25-30 hours per week) and an extra laptop (If I did better than a 1500 on SAT). Unfortunately neither came true (my score was only a 1460) but I will tell you my idea anyways.
In my backpack would be a FIRST battery (or maybe 2) hooked up to a recharger and an inverter (a switch with some simple circuits would tell it when to use the recharger). It could also be plugged in, when the stereo would run on AC power and the battery(ies) would be recharged. The Inverter would then be connected to a power strip, and connected to the power strip would be a 100 watt subwoofer/satellite stereo (the satellites would go in the zipper water bottle holding sections). There would also be a laptop adapter and a place to put my cd player and ipod.
It is a pretty pimp idea, but all of it is hypothetical, except for the crappy backpack. I was going to take it to nats and roll it around with loud music. Hopefully I will see someone who used this idea.

Really the most expensive part of all this, besides the obvious (the laptop) is the inverter and the sat link. the battereies could ccost, what, $20? and the inverter $30->$80->$140(depending on the size). Look around on ebay and find stuff around you at nearby stores you could still get your idea out. The circuitry you're talking about is VERY simple. If you would like a better Idea of how to do this PM me I could help.