Cordless Tool Battery Hack Adds New Life to the Dead

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Uploaded by on Oct 12, 2009

Full procedure - absolutely FREE. This out of the box solution will correct the polarity reversal of the Ni-CD or Ni-MH cells that prevent the battery pack from accepting a charge. I got this trick from a Prof at a University a long time ago and have always shared it freely. As with most knowledge, this fix is all over the net now ... as it should be. However, please beware, there are some who want to charge you money for a guide to fix your charging troubles. Guess what? The "guide" is based on this very same hack. Personally, I think it unscrupulous when anyone tries and capitalize on an idea that isn't even theirs! All information should be available to whomever wants it ... and it should always be free!

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Uploader Comments (phxexaminer)

  • Great video sir, i've tried it on some DeWalt batteries and it works. However i colud not get the "shock therapy" to work on all the sub-c cells even though i tried it a few times. Is there a work-around for that problem or does those batteries need to be replaced?

  • @nordga9 Those are beyond help, I'm afraid. So, if you are going to replace them - replace ALL of them. No sense adding new cells to work along side old ones.

    Check out my video: youtube.com/watch?v=ig2fbI2jej­M

    Gives you the step by step. Cool?

  • I'm going to buy 4 more sub-c cells and re-assemble it. That should

    work, right? Do you have any ideas on how to re-attach the tabs to the

    sub-c's? I'm not sure if soldering will work.

  • @MrMaypole14 Better off buying all new ones. The whole pack. Because the older cells will fail long before the new ones. Then, you'll be in the same place, again.

    Watch: "Ni-CD battery rebuild and upgrade Part1" And "Part 2"

    I show you how to solder together the cells to make your new pack.

  • scuze me.. i haz a question furr ya too..

    when it comes to purrrchasing replacement batteries .. furr a laptop as an example.. it appears that i have a 3 choice option after window shopping.. (funny, i was looking at batteries, not glass LOL).. 1)... low quality lower price regardless of brand name.. 2).. hi quality, top priced, select manufacturers.. 3)... lo quality with high price... i was once told it comes down to the purity of the chemistry used to make the cell.. can u verify?

  • @somewhereone You missed two: High quality, lower price than retail. Or, refurbished, lower price than retail. I found a refurbished for my thinkpad at 1/2 the cost of new retail one. Still working fine for the last 2 years.

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  • why does this happen to the battery packs in the first place?

  • why do people BLOCK questioning viewers and why does youtube allow it?

  • THANK YOU. Went to hang drapes---dead nicad packs for 14.4V Craftsman drill; wavered from buying just one pack, to a whole new set up and this fix...The packs will at least take a charge, now!!! We'll see...if they last for a couple jobs this'll be great. I did like the video. car battery, voltmeter leads, goggles, and Volia!

    Thanx again...

  • NICE VIDEO ! THANKS.. some are shocking golf cart (also used in electric cars) with something either 1. High volts , low amps (ie 2 x higher volts such 24 volts ) for 12 v battery (lead acid type) for 12 - 24 hrs or 2. Super high amps at normal voltage (IE 200amps for short few seconds at 12 v) ... "they " say it works. goto doublebatterylife come has youtube videos (3 separate videos) showing how our patented USA circuit is getting double running time out of alkaline batteries. .

  • fubar lol

  • 1:29 LOL Marvin, the Martian :)

  • @MrMaypole14 If you go to E-Pay you will find numerous vendors that sell the sub-c batteries with the 'tabs' already soldered on. You only have to solder the wires together. Much safer than soldering on the battery. I bought 15 sub-c batteries from a nice man in China, delivered to Canada for $1.50 each. So for $22.50 I rebuilt the battery pack in my 18 volt drill. And they were 2400 MaH. Most battery packs are 1800 MaH at the best.

  • Defribs?

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