Vtech DS4121 Cordless Phone Combo-Pack Includes: 3 x UL958 Batteries (3 Pack) Replacement Batteries for GE TL96158, VTECH 89-1323-00, Unident BT-909, BT-1004, Sanyo GESPC3F03 - Ni-MH 3 AAA w/JST, 3.6 Volt, 700 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.