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CTEK D250S DUAL 12V 20A DC/DC Smart Charger - 56-677

CTEK D250S DUAL 12V 20A DC/DC Smart Charger - 56-677

No Longer Available

This item is no longer available from the manufacturer.

Our recommended replacement is below. CTEK D250SA 20A DC/DC Battery Charger - 40-186
CTEK D250SA 20A DC/DC Battery Charger - 40-186


Technical Specification

Customer Rating Customer Rating
4.7 From 3 Reviews
Guarantee2 Years
Barcode (EAN)7350009566773

View AllLatest Customer Reviews

Does exactly as described, only time will tell as to quality and longevity.. Item arrived well packaged and in a very timely manner. Great product, excellent service.



Star Rating

good unit easily fitted



Star Rating

Tayna A , product would benefit from recessed terminals and possibly terminal covers to prevent accidental shorting when installed in the open / cupboards rather than dedicated enclosure. Terminal capacity is tight if you use the negative as a star point for the three connected devices otherwise excellent product.



Star Rating


The D250S Dual refines all DC sources including alternators and solar power, to perfectly match the amount of charge the battery requires whilst minimising charge time. The D250S Dual is a 20A multi-step charger that automatically adjusts the charging voltage and current according to the battery state of charge and temperature to ensure that the battery is safely optimised for performance.

  • 90% efficiency
  • Adapts to parallel energy sources, use with alternator, solar or both
  • Automatic starter/service battery separation
  • Input voltage 12.9-22V DC; 14.4V Charge Voltage
  • Max charge current 20A; charges batteries 40Ah to 300Ah
  • IP65 rated - splash and dust proof
  • Temperature sensor
  • 2 year warranty

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