CTEK D250SE Dual Input 20A Charger With Selectable Charge Voltages - 40-315

In Stock

$399.00 $379.00

Or 4 payments of $94.75 with AFTERPAY

Product Details

Dual input 20A charger with selectable charge voltages.

The CTEK 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 and solar panel.

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)


  • 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

Part Number: 40-315

Delivery Estimate

Type in your postcode or suburb to get an estimate on time for delivery.

Got Questions?

We are here to help.

Contact Us

About the Brand Products

The CTEK story began in a small village in Sweden, over 20 years ago. It is where the CTEK founder, inventor Bengt Wahlqvist, invented the first electronic pulse battery charger. Since then they’ve become one of the most popular battery chargers in the world, selling over a million battery chargers every year across 70 countries. The range of CTEK products and accessories are ideal for keeping both your vehicle and campsite power needs maintained with a great selection of products for almost every application. CTEK chargers are versatile with mounting and portable options available meaning you can get the most out of your charger in or out of the home garage.

The range not only covers both 12 & 24V options but most battery types as well. Making sure you have the right charger for your battery type is a must however most CTEK models covers popular battery types (lead-acid / lithium / AGM) which makes selecting the right one even easier. The chargers are also designed to be non-sparking, reverse polarity protected and short-circuit proof. Some models, like the MXS 25 12V charger, even have a battery reconditioning feature that helps restore deeply discharged batteries back to life. All products come with a 2-year manufacturer’s warranty.

A battery charger is an excellent investment when you have a 4WD vehicle. Depending on the specific product you choose, CTEK has different intelligent chargers for specific purposes like battery diagnosis, temperature sensing (ensuring optimised charging regardless of weather), and even continuous charging via power supply mode. CTEK battery chargers are designed for use with a range of vehicle types and sizes, including 4WDs, passenger vehicles, heavy vehicles and trucks, motorcycles, and even boats and other recreational vehicles. Designed with users in mind, the CTEK chargers are easy to operate and require minimal to no training - just plug and go.

CTEK has all of the add-ons for any vehicle, large or small to making charging convenient. CTEK accessories employ the patented 'CONNECT' system for a simple, safe, and secure connection to the charger. In addition, bumper, wall mount, solar panel charge kit, terminal, adapter cable, clamps, mounting bracket, and other accessories are available. So whether it is installing an auxiliary charging system in your rig or making sure your vehicles battery is reliably charged before your next adventure the range of CTEK chargers has something for you.

Related Products