Compatible Models: This Battery Replacement suitable for CS540 C054 CS540A Wireless Headset, Part Number: 84479-01, 86180-01. Please verify your old battery part number and model before purchasing this replacement battery.
Strict Quality Inspection: All batteries are tested before shipment, your headset will work as great as when you first got the device. Built-in microchip prevents overcharge, overdischarge, short circuit and overheating, multiple protection.
How To Use: It is recommended to fully drain and fully charge the CS540 battery especially during the first 3 charging and discharging cycles, doing so may greatly improve the overall life of the battery. Highly recommended please watching relevant videos on the Internet before installing.