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Nickel Cadmium (Ni-Cd) Batteries

Alkaline nickel battery technology originated in 1899, when Waldmar Jungner invented the Nickel Cadmium Ni-Cd battery. The materials were expensive compared to other battery types available at the time and its use was limited to special applications. In 1932, the active materials were deposited inside a porous nickel-plated electrode and in 1947, research began on a sealed Ni-Cd battery, which recombined the internal gases generated during charge rather than venting them. These advances led to the modern sealed Ni-Cd battery, which is in use today.

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The Ni-Cd prefers fast charge to slow charge and pulse charge to DC charge. All other chemistries prefer a shallow discharge and moderate load currents. The Ni-Cd is a strong and silent worker; hard labor poses no problem. In fact, the Ni-Cd is the only battery type that performs best under rigorous working conditions. It does not like to be pampered by sitting in chargers for days and being used only occasionally for brief periods. A periodic full discharge is so important that, if omitted, large crystals will form on the cell plates (also referred to as 'memory') and the Ni-Cd will gradually lose its performance.

Among rechargeable batteries, Ni-Cd remains a popular choice for applications such as two-way radios, emergency medical equipment, professional video cameras and power tools. Over 50 percent of all rechargeable batteries for portable equipment are Ni-Cd. However, the introduction of batteries with higher energy densities and less toxic metals is causing a diversion from Ni-Cd to newer technologies.

PMBL can manufacture your Ni-Cd batteries with cells from GP, Saft, Sanyo, Emmerich and many more.

Advantages and Limitations of Ni-Cd Batteries


  • Fast and simple charge - even after prolonged storage.
  • High number of charge/discharge cycles - if properly maintained, the Ni-Cd provides over 1000 charge/discharge cycles.
  • Good load performance - the Ni-Cd allows recharging at low temperatures.
  • Long shelf life - in any state-of-charge.
  • Simple storage and transportation - most airfreight companies accept the Ni-Cd without special conditions.
  • Good low temperature performance.
  • Forgiving if abused - the Ni-Cd is one of the most rugged rechargeable batteries.
  • Economically priced - the Ni-Cd is the lowest cost battery in terms of cost per cycle.
  • Available in a wide range of sizes and performance options - most Ni-Cd cells are cylindrical.


  • Relatively low energy density - compared with newer systems.
  • Memory effect - the Ni-Cd must periodically be exercised to prevent memory.
  • Environmentally unfriendly - the Ni-Cd contains toxic metals.
  • Some countries are limiting the use of the Ni-Cd battery.
  • Has relatively high self-discharge - needs recharging after storage.

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