1 X Plantronics 82742-01 Cordless Phone Battery CPP-547 3.7V Li-Pol 140mAh - Replacement For Plantronics 82742-01 Cordless Phone Battery Replacement Battery for Plantronics 82742-01 - Li-Pol, 3.7 Volt, 140 mAh. This Battery is fully Compatible with the original battery You can rest assured that this battery will work with your Cordless Phone, And it will charge in your Phone. We use only high quality Japanese cells, so you are sure this battery will last for years to come. East Coast Photo is a very high reputable company that manufactures and distributes batteries and other electronic accessories for over 2 decades, this product comes with a 1 year manufacturer warranty.