How to Repair Rechargeable Drill Batteries

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How to Repair Rechargeable Drill Batteries
(Comstock/Comstock/Getty Images)

Fixing rechargeable drill batteries saves you money and a trip to your local electronics shop. The average cost of a new battery pack is £52, and a new drill costs even more. You can pocket this extra money if you can fix the drill batteries yourself. Results may not be guaranteed and it can cost you some time, but it is definitely worth a try.

Skill level:
Moderately Easy

Things you need

  • Multimeter
  • MIG welder

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  1. 1

    Charge the battery for a few hours.

  2. 2

    Check the voltage of the battery using the multimeter.

  3. 3

    Set the voltage of DC power supply to 31 volts by turning the voltage up and using the multimeter to measure and reach the desired setting.

  4. 4

    Lay the dead battery on the work table and check the polarity. The plastic is marked with a (+) and a (-) sign.

  5. 5

    Link the MIG welder to the battery based on polarity. Attach the negative end clip of the welder to the (-) pole of the battery.

  6. 6

    Zap the (+) pole of the battery using the positive lead of the welder. Repeat four to five times.

  7. 7

    Attach the battery to the drill. Turn the drill on to test it.

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