Plantronics CS55 Wireless Headset "reset service battery charging system" Questions

...service). I replaced it and fully charged. Worked fine for 3 or 4 days. Now, won't charge. Tried the system reset and power cycle, no change. Any thoughts? On your base there are the numbers 1-4. ...

...service pack from Microsoft, if applicable. Remove the player from the USB port and push a pin into the reset hole located on the bottom. Reconnect to see if the problem is resolved. Check the ...