CTEK 12V 20Amp Dual Smart Battery Charger

CTEK 12V 20Amp Dual Smart Battery Charger

$379.89 inc GST

or 4 fortnightly payments of $94.97 with Afterpay More info

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The CTEK D250S DUAL Battery Charger obtains its energy from DC sources such as alternators, solar panels or wind power and optimises this power to meet the charging requirements of different battery banks. It automatically selects the best connected DC energy source (of 2) for the purpose and switches between these energy sources to achieve high efficiency multi-stage charging.


The CTEK D250S DUAL Battery Charger is particularly suitable for charging caravans, motor caravans, boats and second homes that do not have access to grid power supplies. 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 CTEK D250S DUAL Battery Charger has a temperature sensor which ensures optimal charging voltages at all temperatures. It ensures that your batteries are always in good condition, quick charging and long battery lifetimes.


The CTEK D250S DUAL Battery Charger is a fully automatic 5-stage charger that supplies 20A to 12V batteries of 40-300Ah. The charger is IP65 classified (water jet and dust protected and approved for outdoor use), protects vehicle electronics and is suitable for all types of lead-acid batteries (Wet, MF, Gel, AGM). The CTEK D250S DUAL Battery Charger is supplied with a 2 year guarantee.



  • Genuine CTEK D250S

  • Delivers 20A to 40-300Ah 12V batteries

  • Compatible with all types of 12V lead-acid batteries

  • Fully automatic five-step charging process

  • Patented pulse-charging technology prevents under- and overcharging

  • Continuously communicates with battery to charge only when needed

  • Set-and-forget convenience: exercises battery the way normal usage would

  • Revives sulphated batteries

  • Automatic temperature compensation for optimal charging in any weather

  • Precisely regulates voltage to protect connected equipment

  • Maximum-power-point tracking for solar panels



  • Volt: 12V

  • Charging voltage: 14.4V at 25°C, temperature compensated

  • Charging current: 20A

  • Back current drain: <1Ah/month

  • Ripple: <4%

  • Ambient temperature: -20°C to +50°C, 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: 40–300Ah

  • Insulation class: IP65



1x CTEK D250S DUAL Battery Charger



  • Carton Dimensions (L x W x H): 192 x 110 x 65mm

  • Carton Weight: 0.73kg

Additional information

Weight0.73 kg
Dimensions192 × 110 × 65 cm