This guide will demonstrate how to change the battery of a Philips Norelco MultiGroom 3100. Tear down/reassembly requires a plastic spudger and soldering equipment.

Remove the comb from the top of the trimmer.
  • Remove the comb from the top of the trimmer.

Nina Lovekrist, Katie Scalion and Martin CREATED THE POWER BUTTON GUIDE. The recent modifications asa far as Team Members by Adam are FALSE. WE WERE TEAM 1- LEAHY 2015 USF


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Grip the attachment and twist it counterclockwise until you hear a click.
  • Grip the attachment and twist it counterclockwise until you hear a click.

  • Pull the attachment up to remove it from the trimmer.

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  • Hold the trimmer upright so it is facing you.

  • Insert the plastic opening tool in the gap at the top of the power button.

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  • Apply pressure to pry off the power button.

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  • Insert the spudger into the bottom of the gray bezel and begin to gently pry it off.

  • Separate the bezel one clip at a time so that the clips do not break.

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  • Insert the spudger in the indicated hole and apply a tilting force to loosen the outer casing.

  • Pull upward on the top of the inner housing to remove it from the outer casing.

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  • Grab the upper casing firmly and pull to seperate from lower casing.

  • This will require some force and may separate suddenly.

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  • Once upper casing is removed, use plastic spudger and insert into the side tabs to free battery casing.

  • Once tabs are freed, pull battery casing from upper casing.

  • Upper casing will not separate from tab separation alone, removal will still require manipulation by hand.

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  • Insert plastic spudger into battery brackets individually. "Wiggle" the bracket out of place

  • Be careful to not bend bracket severely --brackets will need to fit back into place later.

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  • Use a soldering gun and apply heat to the battery contact tabs until solder is malleable.

  • Once solder is malleable, carefully insert a plastic spudger beneath the tab and over the battery to pry battery away from the contact tab.

  • Use proper safety equipment when operating a soldering gun, as burns can occur. Gloves and eye protection recommended.

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  • Once contact tabs have been removed from the battery, the battery can now be removed by hand or by use of a plastic spudger.

  • Locate new battery and prepare for soldering in next step.

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  • Make sure battery is safely secured and re-solder the battery contact tab onto new battery.

  • Check that contact tab is re-soldered onto the original solder.

  • Once solder is dried and cool, toggle the power switch (not the power button) to check that the device is functional.

  • Make sure solder adequately covers the contact tab so the solder will not break in the future

  • Solder with caution. Use gloves and eye protection. Solder contains lead, work in a properly ventilated area.

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Finish Line

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Member since: 09/05/2017

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IUPUI, Team S1-G5, Freund Fall 2017 Member of IUPUI, Team S1-G5, Freund Fall 2017


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Capitalize Battery in the Title

Go ahead and upload the picture of the device.

Be sure to submit to iFixit for their comments when done.

Linda Freund - Reply

Also include prerequisite guides

Linda Freund - Reply

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