This is a Generic Lithonia ELB1210N replacement rechargeable battery is designed to meet or exceed the original Lithonia ELB1210N rechargeable battery in quality, durability, and performance. Comes in both Yellow and Black.30-day money-back guarantee. Single cell NiCD Battery 1.2Volt /1200mAh, D-4/5AF cell, 17x43mm (.670x1.69") Fits Lithonia ELB-1201N or ELB-1210N, also used in fire pull boxes Cross Ref: 4/5AF, D-4/5AF. These batteries may come in either yellow or black