CTEK D250SE Dual DC-DC 20A 12V Battery Charger

Dual input 20A charger with selectable charge voltages

With award winning Swedish technology, the dual input CTEK D250SE Dual DC-DC 20A 12V Battery Charger allows you to enjoy your vehicle more with maximised 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 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 ­optimised charging, regardless of weather conditions. *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)


CTEK D250SE Dual DC-DC 20A 12V Battery Charger Features:

• 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)
• *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)
• Battery separation replacing diodes and VSR relays
• Selectable AGM option – 14.4V or 14.7V
• Maximised charging for better battery life and performance
• Temperature sensor to compensate for hot or cold conditions
• Splash and dust proof (IP65)
• Compatible with SMARTPASS 120, SMARTPASS 120S for the ultimate 140A power management solution
• 2-year warranty

CTEK D250SE Dual DC-DC 20A 12V Battery Charger Specifications:

• Ambient operating temperature: -20 ˚C to +50 ˚C (- 4 °F to +122 °F)
• Positioning: Permanent installation / on board
• Warranty: 2 years
• Input: 11.5–23 V, 25 A
• Output: 14.4/14.7 V, 20 A, lead-acid battery types. 14.2 V, 20 A, LiFePO₄.
• Back current drain*: Corresponding to less than 1 Ah/month
• Battery types: 12 V:, WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO₄
• Battery capacity: 40–300 Ah
• MPPT: Yes
• Net weight (unit with cables): 0.7 kg
• Gross weight (unit in box): 0.9 kg
• Insulation class: IP65
• Ripple**: Less than 4 %

CTEK D250SE Dual DC-DC 20A 12V Battery Charger Product Datasheet