*DISCONTINUED* by HP/Poly, replaced by Plantronics CS510 CS520 W710 W720 CO52 Extended Battery

This is the Genuine Plantronics (not after market) Replacement battery for any of the Plantronics SupraPlus Wireless Headset Systems (Plantronics C052, CO52).  Compatible with these Plantronics wireless models:

• Plantronics CS351
• Plantronics CS351N
• Plantronics CS361
• Plantronics CS361N
• Plantronics CS510 (C052, CO52)
• Plantronics CS520  (C052, CO52)
• Plantronics CS510-XD  (C052-XD, CO52-XD)
• Plantronics CS520-XD  (C052-XD, CO52-XD)
• Plantronics WO300 Savi Office Over-the-Head Wireless Headset
• Plantronics WO350 Savi Office Binaural Wireless Headset
• Plantronics Savi W710 Wireless Headset, Monaural Headset 
• Plantronics Savi W720 Wireless Headset, Binaural Headset 

Key Features:

• Up to 10 hours of continuous talk time.**
• Lithium Ion (Li-on) 3.75v, 190mAh
• part# 64399-03 (also marked as part# 65358-01 on the battery)
• CS510, CS520 system base labeled as C052 or C052

Old Poly part # 64399-03

New HP part # 85R59AA

**Note:  There is also a Plantronics CS510 CS520 W710 W720 CO52 Extended Battery with extra battery time available if you need extra talk time.

Plantronics CS510/CS351/CS361/CS351N/CS361N/W710/W720 Battery Replacement Instructions:

1. Use fingernail to lift off and flip open battery door.
2. Use hook end of tool to hook battery wires and pull toward open battery door until battery moves out from behind post.
3. Once battery is removed, gently disconnect battery connector. do not pull hard.
4. Close door so that it is flush with headset.
5. Using the “Y” end of the tool, press the battery backwards and away from battery door until the left corner of the battery tucks under the post in the battery compartment. Tuck all of the battery wires and connectors into the battery compartment.

6. Close door so that it is flush with headset.