CTEKD250SE, 12V, 20A, Dual Battery Management System With Solar Control

Q: Wake up to no lights in conversion and amber light is on solid what does this mean how can I fix it?

Please contact CTEK directly so we can assist you better.

Q: What voltage should i see if i test on the output for a lifepo4 charging profile (black signal wire to the +)? shouldnt it be 14.6?

Please see page 12 of the D250SE user Manual for lithium charge program details including voltages.

Q: Can i use the d250se to charge a 24ah lifepo4 battery?

Our D250SE is designed for all types of 12V lead-acid batteries (WET, EFB, Ca/Ca, MF, AGM and GEL) and 12V (4cells) Lithium-ion batteries (Li-FePO4, Li-Fe, Li-iron, LFP) between 40-300Ah.

Q: Is the housing weather proof? Can I mount this under the hood or do I need to wire it into the cabin?

The D250SE is IP65 rated (splash and dustproof). It is not waterproof and must be protected from the elements. The D250SE should be mounted with in 6 feet of your service batter/battery bank. This charger requires both a starter battery and service battery.

Product ID: 274024820

Secure Transaction

Details

Brand
CTEK
Colour
Black
Product dimensions
10.9D x 19.3W
Item weight
700 Grams
Output voltage
12 Volts

⚡20A high-power charging

☀️MPPT solar optimization

🌡️Built-in temperature sensor

Frequently Bought Together

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

CTEK SMARTPASS 120S with Installation Kit

Description

⚡ Charge smarter, live powered — wherever your journey takes you!

SOLAR SMART - Maximizes solar energy with advanced MPPT technology for peak efficiency
POWER UP ANYWHERE - Delivers up to 20A to charge 12V lead-acid or lithium batteries on the go
TEMPERATURE TUNED - Built-in sensor adapts charging to temperature, extending battery life and performance
ALTERNATOR FRIENDLY - Seamlessly compatible with all smart alternators, ensuring smooth operation
DUAL BATTERY MASTERY - Automatically balances charge between service and starter batteries for uninterrupted power

The CTEKD250SE is a compact, 12V dual battery management system delivering up to 20A of automatic charging power. Featuring selectable charge algorithms for AGM and LiFePO4 batteries, MPPT solar regulation, smart alternator compatibility, and a built-in temperature sensor, it optimizes battery health and efficiency for service and starter batteries alike.

Specifications

Manufacturer	CTEK
Brand	CTEK
Model	CTEK D250SE (40-315), DUAL INPUT 20A CHARGER WITH SELECTABLE CHARGE VOLTAGES
Product Dimensions	19.3 x 10.92 x 6.6 cm; 700 g
Item model number	40-315
Exterior	Machined
Manufacturer Part Number	40-315
OEM Part Number	40-315
Item Weight	700 g

Have a Question? See What Others Asked

Wake up to no lights in conversion and amber light is on solid what does this mean how can I fix it?

What voltage should i see if i test on the output for a lifepo4 charging profile (black signal wire to the +)? shouldnt it be 14.6?

Can i use the d250se to charge a 24ah lifepo4 battery?

Is the housing weather proof? Can I mount this under the hood or do I need to wire it into the cabin?

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App