ESB Exide Lead Acid Battery Charger model NPC 12 3 550 24570

  For sale is a ESB Exide Lead-Acid Battery Charger;
  model - NPC 12-3-550
  Cat. 101 535 404
  Input: 240/4480VAC; 11.3/5.9A; 3 PH; 60Hz
  12 Cells
  Amp. hr. cap. 550A in 8 HR
  Max amp. DC 89.65/24.75

  Powers UP, the display shows us "-" symbol.
  However no further testing was made. 
  We don't have a battery to test charger properly.

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