CTEK D250SE Smart Battery Charger at Agile Off Road
CTEK D250SE Smart Charger

CTEK D250SE Smart Charger


(1 customer review)


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With award-winning Swedish technology, the dual input D250SE allows you to enjoy your vehicle more with maximized battery capacity as the ideal charger for vehicles without access to a mains power supply.
The D250SE is a fully automatic, 5 step charger that supplies up to 20A of power to any 12V lead-acid or lithium* service battery from 40–300Ah. It has selectable charge algorithms for AGM and lithium* batteries and can use power through its dual input from the alternator, solar panel, and wind power. When the service battery is fully charged, the D250SE will automatically redirect maintenance charge power to the starter battery. The D250SE can maintain a stable output up to 20A to vehicles fitted with smart ECU controlled alternators and also has a temperature sensor for optimized charging, regardless of weather conditions.
  • 20A fully automatic temperature compensated charging for batteries from 40-300AH while you’re on the move
  • Dual input (solar and alternator in parallel)
  • Smart alternator compatible
  • Selectable lithium* and lead-acid mode
  • Solar panel regulator with Maximum Power Point Tracking (MPPT
  • Works great in combination with CTEK Smartpass 120S Power Management System
  • Input: 11.5–23V, 25A
  • Output: Max 14.4/14.2/14.7V, 20A max
  • Back current drain: Less than 1Ah/month
  • Ambient temperature: -4°F to +122°F (-20°C to +50°C)
  • Battery types: 12V: WET, EFB, Ca/Ca, MF, AGM, GEL, LiFePO4
  • Battery capacity: 40–300Ah
  • Insulation class: IP65 (splash and dustproof)
  • Warranty: 2-year warranty

Additional information

Weight 3 lbs
Dimensions 11 × 6 × 3 in

1 review for CTEK D250SE Smart Charger

  1. Jay (verified owner)

    The CTEK system and the instructions provided by Agile Offroad made the installation into my Sprinter a breeze. Clear sequencing, clear pictures and a quick turnaround on the shipping as soon as I ordered made the process pretty effortless. The only thing that could have been stated on the product details is that you need to purchase a 12″-18″ 2AWG Ground wire to connect the CTEK to the chassis. Other than that, flawless.

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