Rayovac RAY77 Cordless Phone Combo-Pack Includes: 3 x UL950 Batteries (3 Pack) Replacement Batteries for Sony BP-T50 for SPP-N100x Models - Ni-CD 2AA w/Reverse Molex, 2.4 Volt, 800 mAh. These Batteries are fully Compatible with the original battery You can rest assured that these batteries will work with your Cordless Phone, And it will charge in your Phone. We use only high quality Japanese cells, so you are sure these batteries 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.