How to replace your Plantronics CS55 wireless headset battery.

Latest update: April 3, 2019

When the time comes to replace your Plantronics CS55 battery, you will first need to order the battery. (Part number 64399-01 to order). When you’re ready to begin you will need a flat work space, a cloth or towel to work on so you don’t scratch your headset, a paper clip or small flat head screwdriver and 5-10 minutes of time. To start, simply follow the steps outlined below. When finished, place your headset in the base for a few hours allowing your new CS55 battery to charge.


Plantronics CS55 Battery ReplacementStep 1: Remove the CS55 ear piece or headband by pulling away from the speaker.







Plantronics CS55 Battery ReplacementStep 2: With your thumb and finger, squeeze the plastic together where there are grooves on both sides.

*** IMPORTANT *** You need to apply significant pressure to both sides so you don’t break the small tabs under the cover. See step 4 picture to understand the location of the tabs






Plantronics CS55 Battery ReplacementStep 3: Insert a paper clip or small screw driver under the battery cover and gently lift as you continue to squeeze the cover until the back lifts free.







Plantronics CS55 Battery ReplacementStep 4: There are two more tabs holding the front of the cover in place. Pull the cover back, towards the speaker, to remove without breaking tabs and lift away from the headset.







Plantronics CS55 Battery ReplacementStep 5: With the battery exposed, lift the front of the battery and pull forward, towards the microphone of the headset.







Plantronics CS55 Battery ReplacementStep 6: With the battery removed, pull the two white connectors apart by grasping the plastic and not by pulling the wires.






You’re half way done! Now reverse the steps to put the new battery back in, charge for a few hours and your CS55 will be as good as new.

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