---
product_id: 675606116
title: "40A DC-DC Battery Charger with MPPT Solar and Alternator Dual Power Input, for Flooded, Gel, AGM, and Lithium Battery"
brand: "renogy"
price: "154967 Ft"
currency: HUF
in_stock: true
reviews_count: 13
category: "Renogy"
url: https://www.desertcart.hu/products/675606116-40a-dc-dc-battery-charger-with-mppt-solar-and-alternator
store_origin: HU
region: Hungary
---

# 40A high-current charging Dual input: solar + alternator Full multi-layer system protection 40A DC-DC Battery Charger with MPPT Solar and Alternator Dual Power Input, for Flooded, Gel, AGM, and Lithium Battery

**Brand:** renogy
**Price:** 154967 Ft
**Availability:** ✅ In Stock

## Summary

> 🔋 Charge Ahead: Power Your Journey with Smart, Safe, and Speedy Energy!

## Quick Answers

- **What is this?** 40A DC-DC Battery Charger with MPPT Solar and Alternator Dual Power Input, for Flooded, Gel, AGM, and Lithium Battery by renogy
- **How much does it cost?** 154967 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/675606116-40a-dc-dc-battery-charger-with-mppt-solar-and-alternator)

## Best For

- renogy enthusiasts

## Why This Product

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

## Key Features

- • **Smart Safety Shield:** Comprehensive protection guards against reverse polarity, voltage spikes, and overheating for worry-free operation.
- • **Power-Packed 40A Output:** Charge faster and smarter with a robust 40-amp current that keeps your battery ready for every adventure.
- • **Adaptive 4-Stage Charging:** Tailored charging profiles for LiFePO4, Gel, Flooded, and AGM batteries ensure longevity and peak performance.
- • **Seamless Dual Power Input:** Automatically switches between solar and alternator inputs to maximize charging efficiency wherever you are.
- • **Intuitive LED Alerts & Controls:** One-touch battery type selection with clear visual feedback keeps you in control without the guesswork.

## Overview

The Renogy 40A DC-DC Battery Charger is a compact, versatile power solution designed for professional-grade battery management. Featuring dual input from solar and alternator sources, it delivers efficient 40-amp charging with adaptive 4-stage logic compatible with multiple battery chemistries. Certified for global safety standards and equipped with comprehensive protection and intuitive controls, it ensures reliable, hassle-free charging on the go or at rest.

## Description

Renogy 40A DC-DC Battery Charger with MPPT Solar and Alternator Dual Power Input, for Flooded, Gel, AGM, and Lithium Battery: desertcart.co.uk: Automotive

Review: Good quality and value without making compromises. - Very useful and well built item which combines all the features of several components (that other manufacturers would sell separately) all in one compact unit.
Review: Renogy quality - 5 stars because was refunded..

## Features

- 【Two Charging Options】The Renogy 40A DC-DC MPPT battery charger offers two versatile charging modes to maximize efficiency. The charger defaults to DC input priority mode. It will automatically switch to the alternate charging mode when the input voltage in the primary mode falls below the default voltage. This ensures maximum efficiency in charging your battery whether you're on the road or parked.
- 【Versatile Compatibility】Compatible with various battery types: LiFePO4, Gel, Flooded, and Sealed Lead Acid. It features a 4-stage charging logic that adapts to different battery characteristics for safe and efficient charging.
- 【Comprehensive Protection】The Renogy 40A DC-DC MPPT charger incorporates comprehensive system protection, offering full safeguarding for solar, generator, and battery connections. It effectively handles reverse polarity, over-voltage, under-voltage, and over-temperature conditions, ensuring reliable and safe operation in all scenarios.
- 【Easy Operation and Visual Alerts】The Renogy 40A DC-DC features indicator lights and buttons for effortless operation. One-touch selection allows you to choose the correct battery type, while LED lights provide visual alerts for errors, ensuring a hassle-free and efficient charging experience.
- 【Certified Quality for Long-Term Reliability】This battery charger is certified to multiple safety standards, including FCC, RoHS, CE, and SAA, ensuring it meets international benchmarks. It also comes with a 2-year comprehensive warranty, providing robust assurance for your use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DHKTF425 |
| Best Sellers Rank | 5,706 in Automotive ( See Top 100 in Automotive ) 58 in Car Battery Charging Units |
| Guaranteed software updates until | unknown |
| Item model number | 40A Battery Charger |
| Manufacturer | Renogy |
| Product Dimensions | 4.8 x 14.8 x 19.5 cm; 1.27 kg |

## Product Details

- **Brand:** Renogy
- **Colour:** Black
- **Item weight:** 1.27 Kilograms
- **Output voltage:** 12 Volts (DC)
- **Product dimensions:** 4.8D x 14.8W x 19.5H centimetres

## Images

![40A DC-DC Battery Charger with MPPT Solar and Alternator Dual Power Input, for Flooded, Gel, AGM, and Lithium Battery - Image 1](https://m.media-amazon.com/images/I/61YHHKvMD2L.jpg)

## Available Options

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

## Questions & Answers

**Q: When installing the DC-DC battery charger, are there any precautions I need to be aware of?**
A: First, installing the charger horizontal will improve venting and heat dissipation of the charger. Additionally, positioning the DC-DC charger nearer the service battery is advised.

**Q: What types of batteries can the charger be used for?**
A: AGM, Gel, Flooded, Lithium-iron Phosphate, User

**Q: How does the charger have communication functionality?**
A: To enable communication, purchase the RENOGY BT-2 Bluetooth module and connect it to the charger's communication port. This will establish communication with mobile terminals like DC Home and Core, granting access to crucial data.

**Q: What stages of charging logic do smart chargers typically include?**
A: Smart chargers typically feature a four-stage charging logic design, encompassing the bulk charge stage, constant voltage stage, float charge stage, and equalization stage. These stages ensure that batteries can be charged safely and efficiently.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality and value without making compromises.
*by R***S on 9 September 2025*

Very useful and well built item which combines all the features of several components (that other manufacturers would sell separately) all in one compact unit.

### ⭐⭐⭐⭐⭐ Renogy quality
*by S***G on 6 June 2025*

5 stars because was refunded..

### ⭐⭐⭐⭐ Happy I made the change
*by N***B on 16 July 2025*

So far so good, I did have the Renogy 20amp mppt that worked great and kept my 200amph lithium battery in good order. As my fridge started drawing a bit more due to weather and cloudy days I tried a cheap dc to dc charger add on- ones available on Amazon. Even tried the one with didgital display and it was rubbish realy. The dc to dc mppt dose the job nicely. Only thing I would say is the app don’t show battery % just voltage. I know as the voltage drops so dose the capacity but it would be nice to see somthing like the app I had for the BT 1 and mppt. Also I would advise upping your cable size to the max you can as I had issues with my 60amp tripping, the cable was hot also. I dropped the max charge to 40amp and all is good until I up the cable from the 70amp I was advised.

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**Shop now:** [https://www.desertcart.hu/products/675606116-40a-dc-dc-battery-charger-with-mppt-solar-and-alternator](https://www.desertcart.hu/products/675606116-40a-dc-dc-battery-charger-with-mppt-solar-and-alternator)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-04*