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The battery most likely did not charge. Problem starts with the power plug at the outlet, also the wire, and them the part that connects to the headset. I have problem with all the parts over several years and familiar models. Wiggling the wire at the ends can solve it sometimes and just watch for the charging light to come on the headset.
Sorry, there was a problem. Please try again later.Please don't hesitate to contact us for troubleshooting assistance at www.plantronics.com/support If you have already tried updating your headset's firmware or testing another charger and your unit is still failing to power on, you can request a replacement by following the instructions on this article: http://www.plantronics.com/us/support/kb/detail.jsp?vfurl=/articles/en_US/Warranty/RN9669&retURL=%2Fapex%2FknowledgeSearch®ion=us&p=&c=All&k=replacement&t=All&lang=en_US&popup=false&c=All
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