How to Revive a Makita 18V Lithium-Ion Battery

Written by mary lougee
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How to Revive a Makita 18V Lithium-Ion Battery
When battery pack tools need recharging the drill bits turn very slowly. (drill image by Aleksandr Ugorenkov from

Makita tools with an 18-volt battery pack may include lithium-ion batteries inside. This battery pack contains 12 batteries, 1.5 volts each, wired together to create 18 volts of power. When you are working on a project and your drill begins to turn slowly and not penetrate wood or drive a screw, the battery pack most likely needs charging. Using a Makita fast charger will only take 15 minutes to recharge the battery pack fully.

Skill level:

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Things you need

  • Makita fast charger

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  1. 1

    Hold the trigger down on the Makita tool until the battery is entirely discharged. The drill will become silent and the tip will quit turning.

  2. 2

    Grasp the battery pack on the bottom of the Makita tool. Press inward on the tabs on each side and pull the battery pack out of the tool.

  3. 3

    Plug an 18-volt battery charger into an electrical receptacle.

  4. 4

    Insert the battery into the charger as far as it will go. A red light will illuminate and a buzzer or melody will play briefly when the battery is in position.

  5. 5

    Remove the battery by pulling it upward and out of the charger when the light turns green or a buzzer or melody sounds that the battery is fully charged.

  6. 6

    Unplug the battery charger.

Tips and warnings

  • If the battery is not removed from the Makita fast charger when it is fully charged, the charger will automatically trickle charge an 18-volt battery for 24 hours. The quick charger automatically sets itself to apply a small charge to the battery at intervals to keep it at full capacity until it is removed without overcharging it.
  • Discharging a battery entirely allows the charger to charge the battery fully each time without any residual electricity stored in the battery.

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