Accessibility Skip to content
Article ID: 000031024
Last Modified Date: 08/10/2022
Access Level: Public

CS540 Battery Information

This product has a replaceable battery (Part Number is 86180-01; sold by our distributors). 
To learn how to replace the battery, click here.

Talk Time

With a single full charge, the CS540 will provide up to 6 hours of talk time.  Talk time will be reduced when operating in wideband mode or if the headset is used consistently at a far distance from the base. Low Battery Warning If you are on a call and the headset battery is critically low, you will hear a repeated single low tone every 15 seconds indicating the battery is low.  You should recharge the headset immediately. If you are not on a call and press the call button, you will hear three low tones if the battery is critically low.  You should recharge the headset immediately.