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CTEK D250TS 24V DC-DC Battery Charger, Separator, 12V Converter and Equaliser



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The CTEK D250TS Continues the Tradition of Offering Chargers with A Focus on Simplicity, Safety and Versatility


The CTEK D250TS is a fully automatic battery charger, battery separator, 12V converter and an equaliser for 24V battery banks combined. Perfect for heavy vehicles, RV’s, boats and other vehicles.

The D250TS is a fully automatic 4-step charger that supplies 10A to 24V batteries of 20–200Ah. The charger is IP65 classified (water jet and dust protected and approved for outdoor use) and protects vehicle electronics. It is suitable for all types of lead-acid batteries (Wet, MF, Ca/Ca, Gel, AGM). It is supplied with a 2 year warranty.


  • Multi-step charging from 24V sources like alternators.
  • Battery separator that eliminates diodes and VSR relays.
  • Maintenance charge of starter battery.
  • Simplified installation of remote batteries for bow thrust of anchor winch.
  • Built-in 12V converter.


  • Volt: 24V
  • Input voltage: 14-30V
  • Charging voltage: 28.8 V at 25°C, temperature compensated. Voltage reduced at higher voltage, increased at lower
  • Charging current: 10A max
  • Back current drain: <1mAh/month
  • Equalization current: Max 10 A, average pending time used for Starter battery charging
  • Equalization voltage: 50 % of input voltage
  • Ripple: <4%
  • Ambient temperature: -20°C to +50°C, output power is reduced automatically at high temperatures
  • Charger type: 4 step, fully automatic DC/DC charger
  • Battery types: All types of 24V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
  • Status signal: +24 V ON when D250TS is working properly. Max current 500 mA
  • Battery capacity: 28–200 mAh
  • Dimensions: 197 x 93 x 49mm (L x W x H)
  • Insulation: class IP65

Connection Diagram


CTEK D250TS Specs

Weight 0.8 kg
Dimensions 9.3 × 4.9 cm

CTEK: The Power Behind Efficient Battery Management

CTEK, a prominent name in the world of battery technology, has established itself as a global leader in the design and manufacture of innovative battery chargers and accessories.

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