Nickel-Cadmium (Ni-Cd)

Nickel-cadmium cells have an anode (negative) in cadmium hydroxide and a cathode (positive) in nickel hydroxide, immersed in an alkaline solution (electrolyte) comprising potassium, sodium and lithium hydroxides. The cells are rechargeable and deliver a voltage of 1.2 V during discharge.

Saft and its subsidiaries have been making nickel-cadmium batteries for over 100 years, addressing a huge variety of professional and industrial applications, with capacities from 0.1 to 1500 Ah. Several different electrode technologies can be used, with pocket-type, sintered plate, foam and Saft's recent proprietary PNE (for the VNT range) anodes, and pocket-type, sintered plate or PBE cathodes (Plastic Bonded Electrodes). Nickel-cadmium cells can be sealed or open, and are available in low-maintenance and zero-maintenance versions.

Sealed cells are cylindrical in shape, in nickel-steel cans . Open cells are prismatic in shape, with casing in plastic (possibly flame retardant) or stainless steel or nickel steel.

Nickel-cadmium batteries have a legendary reputation for robustness, reliability and service life. This is the benchmark technology for difficult and demanding applications: operating temperatures from –40 °C to +60 °C (because the electrolyte has a very low freezing point), excellent cycling capability (up to 3,000 cycles), long storage life, and low or zero maintenance.

Because of the structural materials they use, nickel-cadmium batteries are exceptionally robust, and exempt from risk of sudden failure. And they can be made with very thin electrodes, for high-power units.

Saft makes an increasing proportion of its nickel-cadmium batteries using cadmium from recycled batteries.

VSE - High energy series

 Rechargeable Battery

Main applications

  • medical equipment
  • radio communication and tracking equipment
  • professional tooling
  • military equipment
  • professional electronic devices


VRE - Standard series

rechargeable battery

main applications

  • medical equipment
  • personal care
  • professional lighting
  • radio communication and tracking equipment
  • professional tooling
  • military equipment
  • professional electronic devices

VT / VNT / VNT U / VST High temperature series

rechargeable battery

Main applications

  • emergency lighting units
  • UPS & back-up systems
  • security device