How to Get Corroded Batteries Out of a Maglite

Written by chelsea fitzgerald
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How to Get Corroded Batteries Out of a Maglite
Corroded batteries can get stuck inside a flashlight. (Jupiterimages/Comstock/Getty Images)

Maglites are heavy-duty flashlights that come in a variety of sizes. The flashlights are water-resistant, yet sometimes the batteries corrode if they're not changed regularly, if the flashlight gets extremely wet or if it's often used in humid conditions. Once batteries corrode, they leak and can become lodged in the flashlight barrel. However, it's not difficult to remove the batteries and clean the Maglite for continued use.

Skill level:
Moderately Easy

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Things you need

  • Rubber gloves
  • Towel
  • Dowel rod
  • Hammer
  • Screwdriver (optional)
  • Baking soda
  • Cleaning cloth
  • Spray silicone lubricant

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Instructions

    Dowel Rod Method

  1. 1

    Place a towel over your work surface and put on rubber gloves to prevent battery acid from ruining your tabletop or irritating your skin.

  2. 2

    Remove both ends of the flashlight.

  3. 3

    Shake the flashlight gently to see whether the batteries will come out on their own. Sometimes shaking helps to release the batteries.

  4. 4

    Insert a sturdy dowel rod into the Maglite barrel, on top of the batteries. Hold it in place with your non-dominant hand.

  5. 5

    Tap lightly on the end of the dowel rod with a hammer. This should loosen the batteries. If not, tap the hammer with a bit more force until the batteries loosen and come out.

  6. 6

    Clean the terminals and any corrosion, once the batteries are out of the flashlight. Use one or two tablespoons of baking soda and enough water to create a paste.

  7. 7

    Apply the paste to any corroded areas inside the Maglite. The paste will bubble and eliminate any corrosion.

  8. 8

    Thoroughly wipe off the paste with a damp cleaning cloth. Allow the Maglite to dry completely before adding new batteries.

    Spray Lubricant Method

  1. 1

    Place a towel over your work surface and put on rubber gloves to prevent battery acid from ruining your tabletop or irritating your skin.

  2. 2

    Squirt spray silicone lubricant into the open barrel of the Maglite.

  3. 3

    Allow the solution to sit for a few minutes to fully lubricate the barrel.

  4. 4

    Stick a wooden dowel or screwdriver on top of the batteries to force them out.

  5. 5

    Clean the barrel and terminals of the flashlight with the baking soda paste described earlier.

Tips and warnings

  • If you live in a humid area, remove the flashlight batteries when it's not in use.
  • Sometimes it's impossible to remove the flashlight's tailcap due to battery leakage. If the batteries inside your flashlight are Duracell, Eveready or Ray-O-Vac, Maglite has an agreement with the makers of those battery brands that enables the company to repair or replace your Maglite at no cost to you. Call Mag Instruments at 800-283-5562 for instructions. The company also will repair or replace Maglites that have corroded batteries of another type, but there will be a charge for the service.

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