Nickel cadmium (NiCd) batteries are electrochemical devices that consist of a cadmium hydroxide negative anode and a nickel hydroxide positive cathode, capable of operating well at low temperatures, with a higher energy density and lifespan compared to lead acid batteries, but hindered by a memory effect and environmental concerns due to cadmium.
Their use has been discontinued due to the damage to the environment. These batteries have a high charge/discharge rate and the number of deep discharge cycles is around 2000. The internal resistance of nickel–cadmium batteries is generally very low.
Since Nickel-cadmium (NiCd) batteries have a higher energy density (50–75 Wh/kg) and have a better life (2000–2500 cycles), directly compete with lead acid batteries. They are suitable for uninterruptible power supply and generator start applications.
The energy density of a typical nickel–cadmium cell is 20 Wh/kg and 40 Wh/L. The nominal voltage of the nickel–cadmium battery cell is 1.2 V. Although the battery discharge rate and battery temperature are an important variable for chemical batteries, these parameters have little effect in nickel–cadmium batteries compared to lead–acid batteries.
.PDF includes complete article with source references.
Download UPS datasheets, battery sizing guides, and power redundancy white papers.
Via Monte Rosa, 91
20149 Milan, Italy
Italy (Sales): +39 06 8745 3292
Italy (Support): +39 335 729 8537
Mon-Fri: 9:00 AM – 6:00 PM (CET)