Made by Tridonic this emergency battery is a single-stick design. This model contains 4 NiCd (Nickel-Cadmium) cells. It has a 4.5Ah capacity and each cell is 1.2V. This product provides reliable operation and good charging properties even in high temperatures. It also has high energy maintenance. This product is sold with a 1 year guarantee and a 4 year design life. Polycarbonate fixing caps and connecting cable are also included.