How to Repair Dewalt Batteries

Written by james werning
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How to Repair Dewalt Batteries
The battery pack is simple to disassemble. (battery image by Alison Bowden from Fotolia.com)

Dewalt builds cordless tools that are "guaranteed tough" according to the company's motto. Unfortunately, the first part to break may be the battery, which just won't hold a charge anymore after it starts to get old. With replacement batteries selling from £19 to £65, it's almost not worth buying a replacement. It's good to know that a Dewalt user has the option of rebuilding the old battery.

Skill level:
Moderate

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Things you need

  • Screwdriver
  • Electrical wire or copper bands
  • New battery cells
  • Soldering iron

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Instructions

  1. 1

    Take the old battery pack apart by unscrewing the fastening screws with a screwdriver. Remove the old cells from the case. Count the cells. Note the type of battery, total voltage and Dewalt model number (located on the outside of the battery pack). Give all this information to a battery retailer and obtain the correct replacement cells.

  2. 2

    Select electrical wire or copper bands similar to the old connecting wires. Arrange all the new cells identically to the old ones. Solder the cell connections identically to the old connections. Do not hold the soldering iron to the cell too long or the cell could be damaged. Inspect all the solder joints.

  3. 3

    Slide the cells into the plastic case and secure it with screws. Charge the repaired battery for 12 hours before using it the first time. Charge the battery normally thereafter.

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