In means of mass transportation, and especially in subways, reliability of batteries is of utmost importance. Ni-Cd batteries that are used in subways are used for providing stable functioning of the system in exraordinary and unplanned circumstances.

These batteries must provide:

  • Powering of the low-voltage network in the event of shutting down the main source of power for the period of 30 to 90 minutes
  • Unexpected demands of consumers for additional electricity in the regime of parallel operation

The HK „Krušik“ a.d. offers Ni-Cd batteries with pocket plates type KPL and type KPM for use in the above circumstances.