Reviving A Dead Cordless Tool Batteries

It's always heart-warming to get together with family back home. After being out-of-the-loop for the past year, I really love to catch-up on any new gossip, or laugh at the many tall-tales that are sworn to be absolutely true. I really perked-up when I heard this great tip and I am confident you will as well. Somehow the conversation turned toward tools, as often a group of men will do, and specifically how to bring back dead cordless batteries. I thought right away of all those old dead batteries I had thrown away over the years, now filling up the land fill. (I know you're supposed to dispose of them a certain way, but I guess I was never in-the-loop about what that actually entailed.) But I was still excited about all the money I could be saving henceforth. I think you will too once you discover how easy and inexpensive it really is.
OK, now hook up the free end of the jumpers to the negative and positive ends of your car battery respectively. Position your battery with the two metal contacts facing up. In rapid succession, start tapping one of the contacts with the wire. This will trick the battery into taking a charge. You may have to do this a couple hundred times for full effect.
Use a voltmeter to check the voltage from each cell. Good cells produce 1.2 volts: bad cells have lost their power. Attach the sensor on the end of the red wire from the voltmeter onto the positive terminal of a battery cell: Then attach the sensor on the end of the black wire onto the negative terminal of the same cell. The positive terminal is labeled "+" and the negative terminal "-."
Charge your dead Makita battery using the charging unit. Once charged, remove it from the charger and leave overnight. You need to find out if any of the cells need replacing and bad cells lose their charge quickly.
Read the display on the voltmeter. If it says between 1.1 and 12 volts the cells is good. If it reads less than 1.1 volts, you need to replace it. Make a mark on the cell with a pen, so you know which ones are bad. Repeat the process on each cell. Label bad cells.
Remove the cover from the Makita battery pack. Most covers are held in place using small Phillips screws, so use a suitably-sized Phillips screwdriver. However, if you find your Makita battery is a sealed unit, its best not to force it open as you will damage the pack, and it could be dangerous. Get a replacement this time, ensuring it has a removable cover.
Align the new battery cells correctly, according to your diagram. Solder all the connecting wires to the new battery cell terminals, according to your diagram. Work quickly so as not to overheat the batteries.
Remove the battery pack from your cordless tool. Unscrew the screws holding the battery case together. Open the battery case. Remove the battery cells--they will all be wired together as a unit.
Slide the battery cells into one half of the battery case. Replace the other half of the cover. Fasten the screws that hold the case together, using a screwdriver. Charge the battery pack overnight before using it with your cordless power tool.
Put the new battery cells into the battery pack, using the same method that secured the original batteries in the pack: Push them in place or use a soldering iron to secure them. Ensure the battery terminals face the correct way. Each compartment is labeled positive and negative.