---
product_id: 186600064
title: "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"
brand: "ctek"
price: "₨11308"
currency: SCR
in_stock: true
reviews_count: 4
category: "Ctek"
url: https://www.desertcart.sc/products/186600064-d250se-20a-12v-battery-charger-for-starter-and-service-batteries
store_origin: SC
region: Seychelles
---

# 20A max charging current Supports 12V lead-acid & LiFePO4 batteries MPPT solar panel regulator 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

**Brand:** ctek
**Price:** ₨11308
**Availability:** ✅ In Stock

## Summary

> 🔌 Charge smarter, roam farther — power your journey with CTEK D250SE!

## Quick Answers

- **What is this?** 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 by ctek
- **How much does it cost?** ₨11308 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/186600064-d250se-20a-12v-battery-charger-for-starter-and-service-batteries)

## Best For

- ctek enthusiasts

## Why This Product

- Trusted ctek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Up Anywhere:** Delivers a robust 20A charge to service batteries from 40–300Ah, keeping your rig ready for any adventure.
- • **Safe & Intelligent:** Splashproof, reverse polarity and short-circuit protected—engineered to safeguard your vehicle’s sensitive electronics.
- • **All-Weather Performance:** Built-in temperature sensor adapts charging for optimal battery health in any climate.
- • **Solar-Optimized Charging:** Integrated MPPT regulator maximizes solar input, turning sunlight into reliable power on the go.
- • **Smart Dual Battery Management:** Automatically switches charging from service to starter battery, ensuring your vehicle starts every time.

## Overview

The CTEK D250SE is a versatile 12V, 20A automatic battery charger and maintainer designed for RVs, trucks, and overlanding vehicles. Compatible with lead-acid and LiFePO4 batteries, it features selectable charge algorithms, MPPT solar regulation, smart alternator compatibility, and a temperature sensor for optimized charging. Its robust safety features protect vehicle electronics, while dual battery support ensures both service and starter batteries stay fully charged. Backed by a 2-year warranty, it’s the ultimate power solution for mobile professionals and adventure seekers.

## 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)

Review: Great product and price! - Install was straightforward, easy. Great product and design. Loving it so far!
Review: Works as advertised. - Easy to understand how to install. This charge controller is versatile. AGM or Lithium setup.

## Features

- 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 or lithium* service battery from 40–300Ah. It has selectable charge algorithms for AGM and 12V lithium batteries (*12V LiFePO4).
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07X4YTP1P |
| Best Sellers Rank | #839,243 in Automotive ( See Top 100 in Automotive ) #1,656 in Battery Chargers |
| Brand | CTEK |
| Built-In Media | D250SE |
| Color | Black |
| Current Rating | 20 Amps |
| Customer Reviews | 4.3 out of 5 stars 159 Reviews |
| Global Trade Identification Number | 07340103403159 |
| Input Voltage | 12 Volts |
| Item Dimensions D x W x H | 4.3"D x 7.6"W x 2.6"H |
| Item Height | 2.6 inches |
| Item Type Name | Battery Charger |
| Item Weight | 700 Grams |
| Manufacturer | CTEK |
| Mfr Part Number | 40-315 |
| Output Voltage | 14.4 Volts (DC) |
| Product Dimensions | 4.3"D x 7.6"W x 2.6"H |
| Specification Met | CE |
| Unit Count | 1.0 Count |
| Warranty Description | 2 year manufacturer |

## Product Details

- **Brand:** CTEK
- **Color:** Black
- **Item Weight:** 700 Grams
- **Output Voltage:** 14.4 Volts (DC)
- **Product Dimensions:** 4.3"D x 7.6"W x 2.6"H

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/51Xrvg-ulFL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product and price!
*by R***N on February 11, 2023*

Install was straightforward, easy. Great product and design. Loving it so far!

### ⭐⭐⭐⭐⭐ Works as advertised.
*by W***N on December 9, 2021*

Easy to understand how to install. This charge controller is versatile. AGM or Lithium setup.

### ⭐ Go with a better charger
*by B***Y on January 18, 2026*

I've already tossed this and went with a much better charger. This thing is outdated. The solar controller can't handle modern solar panels with any real open voltage and the charging output is low, and unpredictable.

## 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

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-08*