crwdns2935425:02crwdne2935425:0
crwdns2931653:02crwdne2931653:0
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Use a soldering iron to heat up the solder at the points where the red, yellow, and black wires connect until they detach from the board.
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Lastly, lift the board gently from the ear cup to reveal the battery underneath.
crwdns2944171:0crwdnd2944171:0crwdnd2944171:0crwdnd2944171:0crwdne2944171:0