CTEK D250SA DUAL - 12v 20a 5 Stage DC/DC Caravan Battery Management System

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The CTEK D250SA charger is the ultimate dual battery and dual energy management system for lead acid batteries found in motorhomes, buses, campervans or even dual battery installations in standard 4WD's. Providing two DC inputs and obtaining its power from either an alternators, solar panel, wind power or other DC energy. The D250SA automatically selects the best connected DC energy source from its two inputs and provides CTEK's state of the art 5 stage charging process to the connected battery.

Ideally suited for caravans or motor homes with solar panels. Leaving CTEK D250SA to determine the best available energy and maintain and charge the house batteries. Charging automatically starts as soon as DC energy is provided to the charger, such as from alternators when a vehicle is started or from solar panels when connected. The D250SA has a temperature sensor which ensures optimal charging voltages at all temperatures.

The D250SA is a fully automatic 5-stage charger that supplies up to 20a to 12v batteries of 40-300Ahr. The charger is IP65 classified, which is water jet and dust protected and approved for outdoor use. The D250SA protects vehicle electronics and is suitable for all types of lead-acid batteries (Wet, MF, Gel, AGM).


Max Input: 11.5v-23v, 25a
Charging Voltage: 14.4v / 14.7v AGM
Max Charging Current: 20a
Back Current Drain: <1Ah/month
Ripple: <4%
Ambient temperature -20 to +50 Degrees Celsius (output power is reduced automatically at high temperatures)
Charger Type: 5-step fully automatic charging
Battery Types: All types of 12v lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
Battery Capacity: 40-300Ahr
Dimensions: 192 x 110 x 65mm (L x W x H)
Insulation Class: IP65
Weight: 0.71kg

Product brochure / datasheet can be downloaded by clicking the PDF icon just below the main image.


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Model # D250SA


CTEK offers 2 year manufacturer warranty on this product. Warranty will be void if:

Charger has been used with much higher current and or voltage than designed for and specified in models specifications sheet.
Clear signs of heat on any of the CTEK casing, cables or circuitry.
Used with incorrect voltage or incorrect battery types.
Visible signs of impact or water damage.
CTEK product has been opened by a non CTEK authorised engineer or agent.

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