---
product_id: 68225798
title: "40-256 On-board Charger and Display"
brand: "ctek"
price: "€ 1168.79"
currency: EUR
in_stock: true
category: "Ctek"
url: https://www.desertcart.sk/products/68225798-40-256-on-board-charger-and-display
store_origin: SK
region: Slovakia
---

# 140A max energy flow IP65 splash & dust-proof Smart temp sensor 40-256 On-board Charger and Display

**Brand:** ctek
**Price:** € 1168.79
**Availability:** ✅ In Stock

## Summary

> ⚡ Charge smarter, drive further — never get left behind!

## Quick Answers

- **What is this?** 40-256 On-board Charger and Display by ctek
- **How much does it cost?** € 1168.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/68225798-40-256-on-board-charger-and-display)

## 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

- • **Rugged Durability:** IP65 rating ensures splash and dust resistance for all-weather reliability
- • **Seamless Integration:** On-board charger with display designed for effortless monitoring and control
- • **Precision AGM Charging:** Switch between 14.4V or 14.7V for optimized battery health and longevity
- • **Maximized Power Efficiency:** Delivers up to 140A for rapid, reliable energy management on the go
- • **Adaptive Temperature Control:** Built-in sensor adjusts charging to cold climates, preventing battery strain

## Overview

The CTEK 40-256 On-board Charger and Display is a robust 20A off-grid charging system engineered for professional-grade battery management. Featuring adjustable AGM modes (14.4V/14.7V), a temperature sensor for cold environment optimization, and an IP65 splash/dust-proof rating, it ensures maximum battery efficiency and durability. Perfect for millennial managers who demand reliable power on the move, this charger delivers up to 140A energy flow with a sleek display for real-time monitoring, backed by a 2-year warranty.

## Description

Buy CTEK 40-256 On-board Charger and Display at desertcart UK. Free delivery on eligible orders.

## Features

- Adjustable AGM mode: 14, 4V or 14.7V
- Maximized charging efficiency to increase battery power and battery life
- Temperature sensor to optimise charging in cold environments
- Splash-proof and dust-proof (IP65)
- The ultimate 140A energy management solution

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07D7LTLZR |
| Best Sellers Rank | 1,016,660 in Automotive ( See Top 100 in Automotive ) 2,599 in Car Battery Charging Units |
| Box Contents | On-board charger; spared display; user guide |
| Brand Name | CTEK |
| Colour | black |
| Country of Origin | China |
| Current Rating | 20 Amps |
| Customer Reviews | 3.5 3.5 out of 5 stars (13) |
| Global Trade Identification Number | 07340103402565 |
| Input Voltage | 14 Volts |
| Item Type Name | 20A off-grid charging system: on-board charger and display for charging the additional battery while driving |
| Item Weight | 1.8 Kilograms |
| Manufacturer | CTEK |
| Manufacturer Part Number | 40-256 |
| Model Number | 40-256 |
| Output Voltage | 12 Volts |
| Product Warranty | 2 Year |

## Product Details

- **Brand:** CTEK
- **Colour:** black
- **Input voltage:** 14 Volts
- **Item weight:** 1.8 Kilograms
- **Output voltage:** 12 Volts

## Images

![40-256 On-board Charger and Display - Image 1](https://m.media-amazon.com/images/I/61YisXTqHXL.jpg)

## Questions & Answers

**Q: How does the lcd display connect to the d250sa? is it via cable or bluetooth? thanks**
A: It is a device which works without the d250sa and has no connection to it. It is manufactured for CTEK by NASAMARINE (BM1 Compact). You connect it to the service battery and you can use it without the D250SA.

## Frequently Bought Together

- CTEK 40-256 On-Board Charger and Display
- CTEK 56-382 Indicator eyelet M8: practical LED indicator for immediate indication of battery charge levels , Red/black
- CTEK 56 - 304 Connect 2.5M Extension extend the range of your charger

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**Shop now:** [https://www.desertcart.sk/products/68225798-40-256-on-board-charger-and-display](https://www.desertcart.sk/products/68225798-40-256-on-board-charger-and-display)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-08-08*