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Battery for CS351/361 & WO300/350 Wireless Headsets – DISCONTINUED

Discontinued – Click for more info
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Replacement Battery for Plantronics Legacy Headband Style Wireless Headset Systems

  • Manufacture Discontinued 08/23 – No Replacement
  • Compatible with discontinued CS351/CS351N, CS361/CS361N, WO300 and WO350 Wireless Headset Systems
  • Lithium Ion Polymer (Li-Ion) battery
  • Actual size: 3/4″ X 1-1/4″ X 1/8″ inch thick
  • To replace the battery in the headset, remove the rubber door from the bottom of the headset and use the enclosed tool to help remove the battery
  • Fully recharge the battery in less than 3 hours
  • 80% recharged in 1.5 hours
  • Original battery that came in your wireless headset
  • Plantronics one year manufacturer’s warranty
  • Provides 10 hours talk time in the SupraPlus Wireless, up to 9 hours in Savi series
  • 3.75v, 190 mAh
  • Also has part number 65358-01 marked on this battery
  • Genuine Plantronics accessory
BTP Model: PL-64399-03
MFR Part: 64399-03

Additional information

Weight 0.0625 lbs
Dimensions 6 × 4.25 × 0.75 in


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Manufacture Discontinued.


“I want to let all of you at Business Telecom Products know that your customer support and high level of service is very much appreciated.”Read more

Joe S. (Olympia, WA)