tired of dead batteries in your cordless tools? me too! so let's hack away!!

ok this is my 1st instructable so please be kind.
Are you like me when it comes to cordless tools? I get so frustrated with half finished projects and hours of wait time while those "convenient" cordless tools charge. so, i wanted to add wall power to them but, the key for me was to achieve this and not make a permanent mod to the tool itself,. now the real question is.. HOW result do i get that result? surprisingly it's really simple, minimal soldering required and again not a permanent modification to the tool. the best part is that i can change from tool to tool for flexibility, i can still use battery packs when an outlet isn't available and it cost me no money.  OH and it only took about 30 minutes. OK let's get hacking!!1) cordless tool(s).  I had a 24v firestorm drill/ jig saw/ reciprocating saw combo i had rescued from someones curbside trash (YaY free!!)
2) suitable voltage converter w/ power cord (IE laptop charger or such), works best if it also is small enough to fit inside the old battery pack (this one was in with a bunch of electronics i rescued from a dumpster (YaY free again!! sensing a theme yet?) You could build your own if you have that skill, or a wall wart will work fine too, i didn't have a wall wart capable of the 24v needed for these tools.
3) 22-24 AWG wire 
4) soldering iron w/solder
5)   shrink tubes, sandpaper or small files, pliers, screwdrivers, a dremel is very handy, hot glue gun and glue (or if you're like me and don't have one...improvise) 
6) and MOST IMPORTANT....a little common sense

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