This is the Genuine Plantronics (not after market) Replacement battery for any of the Plantronics Wireless Headset Systems (Plantronics C052, CO52). Compatible with these Plantronics wireless models:
Up to 13 hours of continuous talk time.
Lithium Ion (Li-on) 3.7v, 270mAh
CS510, CS520 system base labeled as C052 or CO52
Not compatible with older discontinued Plantronics wireless headset models: CS351N, CS361N, Savi WO300 & WO350
part# 200840-011 is marked on the battery
Plantronics CS510/CS520/W710/W720/W410/W420 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.