How to repair dead dry battery at home , Lead acid battery repairation



How to Repair the Battery in a Panasonic ER203 Clipper

Steps

  1. Find a replacement battery.It turns out that almost any nickel cadmium (NiCd, NiCad) battery with solder tabs will work just fine. To get such a battery, you can order one from any electronics supplier, McMaster-Carr, or many battery suppliers. The simpler way to get one (actually, two or three in most cases) is to buy a replacement battery pack for a cordless phone -- these are available locally at most any place that sells cordless phones.
  2. The battery pack contains two to four AA NiCd cells connected in series.Your task is to take the pack apart! Remove a strip of plastic and pop the two cells (connected together) out of the carrier. Pry the two cells apart a bit to expose the connection at one end between the two cells. Cut the strip with some scissors (you don't really need wire cutters, but that is the proper tool).
  3. Remove the insulation from the tab (found at one end) and fold the tabs at both ends back over themselves.These will be the connections to the ER203 later.
  4. To open the ER203, move the depth adjustment to the shortest cut position, remove the comb guide and the clipper head.There are two screws under the clipper and one at the base near the cord socket. A very small Phillips screwdriver is needed for these screws.
  5. Once the screws are out, you can pop off the back of the clipper.Try to keep the depth adjustment knob in the clipper or at least note its position.
  6. Remove the old battery.It is held only by the posts at each end.
  7. Insert the new battery with the end of the battery that has a groove/crimp toward the clipper end of the shaver.I found that putting the bent tab in with the bend first and aligned vertically worked best. The other end of the battery goes in the same way but the bend in the tab may be 90- or 180-degrees off from the "top" of the battery -- just make sure the tab contacts the clip that held the post on the old battery. I did have to use a bit of force to get the battery fully inserted (not more than finger pressure!) as the original battery is just slightly shorter than a standard AA with solder tabs. Soldering is not necessary!
  8. Reassemble.The only tricky part about reassembly is the depth knob. Make sure it works for the full adjustment range before tightening the screws.
  9. Plug in.Once charged, you should be ready to trim for another few years.

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  • In Step 7: ALTERNATIVELY, there are two tabs on the negative end of the battery holder. Use a blunt nosed tweezer to fold the SHORT tab over on itself. Insert a standard AA NiCad battery in the battery holder. It will be a bit loose. Tape a sticky compressible foam strip, such as used for insulating strips for windows (or anything similar) over the battery and reassemble.

Warnings

  • Proper disposal of the old (and/or extra new) battery should be done. A Radio Shack will take your old batteries and prevent nickel and cadmium from being released into the environment.
  • Watch how you insert the battery. It won't charge if reversed!
  • Don't short the terminals of the battery pack when disassembling. This is not a high-energy device so there is no danger but you might get a spark and damage the battery or a tool.





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Date: 16.12.2018, 03:31 / Views: 91352


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