Panasonic KX-T3860 Cordless Phone Battery Ni-CD, 3.6 Volt, 400 mAh - Ultra Hi-Capacity - Replacement for At&t/Avaya 2C1, Panasonic P-P301, Radio Shack 23-281, Sony BP-T16, Toshiba, Uniden BT-185 Rechargeable Batteries Synergy Digital Replacement Battery for At&t/Avaya 2C1, Panasonic P-P301, Radio Shack 23-281, Sony BP-T16, Toshiba, Uniden BT-185 - Ni-CD, 3.6 Volt, 400 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. Synergy Digital is a very high reputable company that manufactures batteries and other electronic accessories for over 2 decades, all our products come with a 3 year manufacturer warranty. Synergy Digital is a Registered Trademark