Intended for medium discharge currents from 0.5 to 2 C


  • Railway: Traction cars, VIP cars, etc.
  • Mines: Mining locomotives
  • Factories and institutions: Electro-carets, certain types of electric fork lifts
  • City traffic: Trams and trolley-buses
  • Other needs


  • They are applied as mobile and stationary batteries, assembled in portable cases or on shelves
  • High resistance to mechanical loads
  • High resistance to electrical overcharge and deep discharge
  • Minimum self-discharge
  • Huge number of charge-discharge cycles
  • Work in the temperature span -40 to +50°C
  • Batteries can be recycled
  • Fast and simple assembly, easy maintenance and handling
  • Small inner resistance
  • Electric characteristics of batteries fully comply with the International Electro-technical Commission’s standard IEC 60623


  • Nominal voltage of the battery (operating voltage) is 1.2 V.
  • In order to achieve higher values of voltage than 1.2 V, batteries are connected serially.
  • Nominal capacity of the battery is the five-hour capacity (C5) at the temperature 20 ± 5°C, stated as electricity in ampere hours (Ah) and labeled C5, Ah.
  • Nominal charge/discharge current is: I=0.2 C5A
  • Time of charging the battery with nominal current is 7.5-8 hours which makes the battery fully charged
  • The charging factor is: F=150-160% C5Ah
  • Time of discharging with nominal current I=0.2 C5A to the voltage of 1.0 V/cell is 5 hours at the minimum.
  • Electrolyte in the battery is the KOH (potassium-hydroxide) solution in distilled water, with density 1.2 ± 0.01g/cm3

Typical discharge curves for KPM type Ni-Cd cell at 20°C