CTEK D250SE Dual Input DC-DC 20A Smart Battery Charger, Power Bank
SKU: 50312869731

CTEK D250SE Dual Input DC-DC 20A Smart Battery Charger, Power Bank

Sale price$144.87 Regular price$160.97
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

CTEK D250SE Dual Input DC-DC 20A Smart Battery Charger, Power BankThe CTEK Dual Input 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 40300Ah. 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 battery charger will automatically redirect maintenance charge power to the starter

The CTEK Dual Input 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 battery charger 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.

With award winning Swedish technology, the Dual Input D250SE 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 CTEK Dual Input D250SE battery charger features a 2-year warranty. This exclusive combo includes a CTEK Power Bank so that you can charge your electronic devices wherever you go!

Specification


  • Brand: CTEK
  • Battery capacity: 40–300 Ah
  • Charging category: DC charging
  • Back current drain*: Corresponding to less than 1 Ah/month
  • Battery voltage: 12 V
  • Battery chemistry: Lead acid; Lithium-ion
  • Ambient operating temperature: -20 ˚C to +50 ˚C (- 4 °F to +122 °F)
  • 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.
  • Ripple**: Less than 4 %
  • Battery types: 12 V:; WET; MF; Ca/Ca; AGM; EFB; GEL; LiFePO₄
  • Degree of protection: IP65
  • MPPT: Yes
  • Warranty: 2 years

IN THE BOX

  • 1 x CTEK D250SE Dual Input Battery Charger
  • 1 x CTEK Power Bank
  • 1 x User Manual
  • Note: User Manual is accessible online

SIZE WEIGHT

  • Gross weight (unit in box): 0.9 kg
  • Dimensions (L x W x H): 192 x 110 x 65 mm
  • Net weight (unit with cables): 0.7 kg

SKU: CTEK-40-315-340


We accept Change of Mind returns for 14 days after you have received the item in cases where you have changed your mind or made an incorrect purchase and wish to return the product. This also applies to orders canceled when the item has already been dispatched from our warehouse. The item must be in a re-saleable condition to qualify for a change of mind refund. Deductions may apply including Initial and Return Shipping, as well as restocking fee of 10% of the product price

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50312869731

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Chris
Waukegan, US
★★★★★ 5
BEAUTIFUL.
Size: 1-Pack, Style: Zinnia Dahlia
Great seeds, good germination.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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Brandi Lynn N
Bozeman, US
★★★★★ 5
Excellent Dahlia Seeds — Huge Difference in Quality
Size: 1-Pack, Style: Zinnia Dahlia, Size: 1-Pack, Style: Zinnia Dahlia
Excellent germination rate and very fast growth! I planted these seeds side-by-side with another Dahlia seed packet from a different seller on the exact same day under identical conditions, and the difference has been amazing. By day 23, these seedlings were already thriving — healthy, vibrant, and growing quickly with a very high germination rate. The plants look strong and vigorous, and I’m extremely impressed with the quality of the seeds. If you’re looking for Dahlia seeds that actually perform well and establish quickly, I would absolutely recommend these. I’m excited to see them continue growing and blooming
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Reviewed in the United States on May 14, 2026
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Lillian DuBois
Louisville, US
★★★★★ 5
Zinnia flower seeds are great
Size: 1-Pack, Style: Zinnia Dahlia
I love the seeds there sprouting so well we got some for me and my daughter to try out and we love them. We will be buying more seeds soon or we would love to test seeds out if you ever decide to choose us.
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Reviewed in the United States on May 19, 2026
A
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Amazon Customer
Whiting, US
★★★★★ 5
customer
Size: 1-Pack, Style: Zinnia Dahlia
This package had more than the pkg that was supposed to have 4000, but they are coming up slowly. It is dry here, I have been watering , just enough to get the ground wet and they are scattered, but some are coming up. I also watered the space supposedly where i spread seeds from the supposedly 4000 seeds pkg. They are not coming up as much!
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Reviewed in the United States on May 17, 2026
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josh
Lowell, US
★★★★★ 4
Didn’t get a review on the garlic powder
Size: 1-Pack, Style: Zinnia Dahlia
The seeds were okay but the garlic powder that I ordered was smaller than usual is a case of bait and switch
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Reviewed in the United States on May 31, 2026

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