Bullet Point 1 Kastar Brand Replacement Lithium-ion (Li-ion) Battery CS50/55 3.7V 240mAh. High Quality, Long Lasting and Manufacture Price. Bullet Point 2 Kastar Battery 100% decoded and 100% Compatible with the Original Batteries and Chargers. Bullet Point 3 Kastar Battery High Capacity. Use high quality Japanese Cells for longer battery life with no Memory Effect. Bullet Point 4 Use Integrated Japanese microchip which can prevent the overcharge and overdischarge. Bullet Point 5 The Battery Include 30-Day Money Back and 3-Year Manufacturer Warranty. Description Details Kastar 3.7V 240mAh Battery (1-Pack) for Plantronics CS-50 CS50-USB CS-55 CS-60 PL-CS-50 PL-CS-50USB PL-CS-55 PL-CS-60 Replaces OEM Avaya AWH-55 Plantronics 64327-01 64399-01 65358-01 PL-64399-01 Quality Price Value