The CTEK Dual Input D250SE is a fully automatic, 5-step charger designed to provide up to 20A of power to any 12V lead-acid or lithium service battery with a capacity of 40–300Ah. Featuring selectable charge algorithms for AGM and lithium batteries, this charger can draw power from dual inputs including alternator, solar panel, and wind power.
Key Features:
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Automatic Maintenance: When the service battery is fully charged, the D250SE redirects maintenance charge power to the starter battery.
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Smart Alternator Compatible: Maintains a stable output up to 20A even with smart ECU-controlled alternators.
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Temperature Sensor: Optimizes charging based on weather conditions.
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Dual Input Sources: Supports alternator, solar panel, and wind power inputs.
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Swedish Technology: Award-winning design for maximized battery capacity without mains power access.
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Power Bank Included: Charge your electronic devices on the go with the included CTEK Power Bank.
Specifications
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Brand: CTEK
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Battery Capacity: 40–300 Ah
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Charging Category: DC charging
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Back Current Drain: Less than 1 Ah/month
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Battery Voltage: 12V
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Battery Chemistry: Lead acid, Lithium-ion
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Operating Temperature: -20°C to +50°C (-4°F to +122°F)
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Input: 11.5–23 V, 25 A
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Output: 14.4/14.7 V, 20 A (lead-acid); 14.2 V, 20 A (LiFePO₄)
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Ripple: Less than 4%
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Battery Types: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO₄
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Protection: IP65
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MPPT: Yes
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Warranty: 2 years
Package Includes:
- 1 x CTEK D250SE Dual Input Battery Charger
- 1 x CTEK Power Bank
- 1 x User Manual (available online)
Size & Weight:
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Dimensions: 192 x 110 x 65 mm
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Gross Weight: 0.9 kg
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Net Weight (with cables): 0.7 kg
The CTEK Dual Input D250SE is the ideal solution for those who need reliable and efficient charging for their vehicles.