Step 1
Slide off your Plantronics W02 battery (compatible with W740, W745, W440, W445, CS540XD, CS545XD)
Step 2
Reinstall your compatible replacement W02 Plantronics headset battery *NOTE: There's various headset models that show W02 on the bottom of the charging base, which use a different battery. If your Plantronics headset doesn't look at shown, follow the Savi W710 and W720 battery replacement guide. 
Simple as that! Your new Plantronics battery is installed and the battery life will be refreshed back to new.
