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one aaa in the right side under the plate, it just pulls off than snaps back on.
Sorry, there was a problem. Please try again later.The headphones are marked right and left ear. There is a small button on the side of the right ear phone. Push it and it pops the back off and you can change the battery. Battery life is dependent on how often and long it is used. The battery that came with it lasted a couple of months. I replaced it with my preferred Energizer Lithium in AAA.
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