• High quality replacement rechargeable battery
• Your headset will work as brand new, talk time last as long as when you first got it
• So easy to change out, simply pop out the old one then slide in the new battery and the repair work is done
• Replacement for Plantronics battery manufacturer part number 84598-01 82742-01 204755-01
• Compatible For Plantronics Savi W740, Savi W745, Savi W720, Savi W440, Savi W445, Savi WH500, Savi WH500A, CS540XD, W02 Wireless Cordless Headsets Headphones