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!!
Step 1: Tools and Supplies
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
Step 2: Dismantle Battery Pack
Step 3: Dispose Of/ Recycle Old Battery Cells
Step 4: Prepping for Assembly
Step 5: Connecting Everything
I choose to solder the leads from the battery pack 1st, whether thats the best approach or not is a matter of opinion i think. though i will say that it's best to remove (one at a time) the metal connection points from the pack before soldering as that will keep you from melting the plastic housing and mounting spots rending that pack case unusable as the contact points will not line up correctly.
next up is soldering the + and - wires to the converter. mine worked out perfect as it was surface mounted rather than trying to solder wires together or fit into some tight space on the board.
Step 6: Pack It in and Close It Up
Step 7: And We Are Done! Time to Enjoy
final note; while it is possible and maybe even perfectly safe, i still do NOT recommend plugging into wall outlet before connecting the battery pack case to the drill, saw, or whatever tool chosen. 2 seconds of safety VS possible electric shock or death...your choice! either way i am not liable or responsible for any damage, injury, death, fried electronics, or burned down houses. you undertake this instructible at your own risk and peril
hope everybody enjoys this 'ible. thoughts and questions are welcome.