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Sold by: Tradeinn
(2702 ratings)
69% positive over last 12 months
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CTEK D250SE, 20A, 12V Battery Charger For Starter And Service Batteries In RV, Truck And Overlanding Vehicles, Solar Battery Maintainer, 12V Lithium Ion Battery Charger And Smart Alternator Compatible

4.5 4.5 out of 5 stars 126 ratings

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Purchase options and add-ons

Brand CTEK
Color Black
Product Dimensions 4.3"D x 7.6"W x 2.6"H
Item Weight 700 Grams
Input Voltage 12 Volts

About this item

  • Battery Support On the Go: The D250SE is a fully automatic, 5 step charger that supplies up to 20A of power to any 12V lead-acid
  • Achieve Nominal Power from Your Solar Output: Solar Panel Regulator with Maximum Power Point Tracking (MPPT) optimizes available power.
  • Charge Service and Starter Batteries: When the service battery is fully charged, the D250SE will automatically redirect maintenance charge power to the starter battery.
  • Smart Alternator Compatible: Full functionality with all types of alternators.
  • Built-In Temperature Sensor: Allows you to achieve maximum charge levels no matter what the temperature.
  • Safe and Easy to Use: Splash and dustproof, designed to protect vehicle electronics and non-sparking, reverse polarity protected, and short-circuit proof. Clean voltage and current delivery ensures no surges or spikes.
  • Protects Sensitive Equipment: Unlike less-sophisticated chargers, there is no need to disconnect the battery; the D250SE is specially designed to not damage electronic systems. No overcharge or undercharge ever.
  • 2 year warranty
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$320.29
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$22.99
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CTEK D250SE, 20A, 12V Battery Charger For Starter And Service Batteries In RV, Truck And Overlanding Vehicles, Solar Battery Maintainer, 12V Lithium Ion Battery Charger And Smart Alternator Compatible
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Price-7% $320.29
Typical:$345.88
$529.96$62.97$116.98-28% $84.95
List:$118.71
-21% $109.99
List:$139.45
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Thursday, Mar 28
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Safety Features
4.0
4.9
5.0
4.7
4.7
Easy to use
4.0
4.7
5.0
4.7
4.8
Value for money
3.5
4.6
5.0
4.5
4.5
Sold By
Amazon.com
R/A Hoerr Incorporated
HJDZUS
R/A Hoerr Incorporated
R/A Hoerr Incorporated
R/A Hoerr Incorporated
input voltage
12 volts
12 volts
110 volts of alternating current
5 volts
120 volts
12 volts
weight
700 grams
4.64 pounds
1.15 pounds
1.3 pounds
1.94 pounds

From the brand


From the manufacturer

CTEK D250SE

CTEK D250SE

Battery charging on the go

CTEK’s D250SE is a fully automatic, 5-step on-board battery charger and maintainer. It supplies up to 20A of power to any 12V lead-acid or lithium (LiFePO4) service battery from 40–300Ah and has selectable charge algorithms for AGM and lithium batteries. It’s fully compatible with all types of alternator, including smart alternators, and will automatically redirect maintenance charge power to the starter battery when the service battery is fully charged. The D250SE also has a built-in solar panel regulator with Maximum Power Point Tracking (MPPT) to optimize the available power. The D250SE is compatible with CTEK’s SMARTPASS 120S for the ultimate onboard charging system.

D250SE in use

Maximizes available power

Compatible with Smart Alternators

Providing up to 20A of power whilst on the move.

Maximizes solar output

Solar Panel Regulator with Maximum Power Point Tracking (MPPT) optimizes available power.

Built-In Temperature Sensor

Allows you to maximize charge levels, no matter what the temperature.

  • Fully automatic 20A 5-step battery charger and maintainer
  • Compatible with lead-acid and lithium (LiFePO4) batteries
  • Works with all types of alternator, including smart alternators
  • Solar panel regulator to optimize available power
  • Built-in temperature sensor
  • Splash proof, dustproof and short circuit proof
  • Non sparking, reverse polarity protected clamps
  • Automatically redirects power to starter battery when service battery is fully charged
D250SE Compatibility

The ultimate off grid charger

  • 20A fully automatic temperature compensated charging
  • Dual input for alternator and solar in parallel
  • Ideal for use in overland vehicles, RVs and trucks

Smartpass 120S

Accessories Available to Take Your Chargers to the Next Level (Sold Separately)

The CTEK SMARTPASS 120S is a 120A Power Management Solution which distributes, controls and maximizes the available energy from your alternator to power service batteries and consumers. SMARTPASS 120S handles all 12V batteries between 28–800Ah. The SMARTPASS 120S’s Battery Guard function ensures that critical equipment such as radio, emergency lights and navigation systems always have power and take priority when the voltage on the service battery is low disconnecting non-critical consumers. The unit’s Battery Guard will protect your service battery from total discharge and built-in over-temperature protection reduces charge current before the battery temperature gets too high. SMARTPASS 120S is compatible with the D250SA and D250SE 20A onboard chargers.

CTEK D250SE Technical Specifications

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)

Product Description

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. 12 V: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4, *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)

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Warranty & Support

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CTEK D250SE, 20A, 12V Battery Charger For Starter And Service Batteries In RV, Truck And Overlanding Vehicles, Solar Battery Maintainer, 12V Lithium Ion Battery Charger And Smart Alternator Compatible


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  • D250SE
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    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    126 global ratings

    Top reviews from the United States

    Reviewed in the United States on February 11, 2023
    Reviewed in the United States on December 9, 2021
    One person found this helpful
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    Reviewed in the United States on June 22, 2022
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    Top reviews from other countries

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    Cathie Francescutti
    5.0 out of 5 stars Reliability
    Reviewed in Canada on March 23, 2022
    KMC
    5.0 out of 5 stars Wohl die einige Lösung für eine Doppelbatterie mit Solaranschluß
    Reviewed in Germany on November 21, 2023
    manuela
    5.0 out of 5 stars Ottima qualità
    Reviewed in Italy on September 24, 2023
    sou
    5.0 out of 5 stars Super matériel
    Reviewed in France on January 3, 2023
    Clarabe1
    5.0 out of 5 stars Simple, great split charger for a camper.
    Reviewed in the United Kingdom on November 29, 2022