---
product_id: 538202047
title: "40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger"
brand: "atem power"
price: "€ 307.90"
currency: EUR
in_stock: true
reviews_count: 6
category: "Atem Power"
url: https://www.desertcart.pt/products/538202047-40a-dc-to-dc-battery-charger-with-anderson-plug-reverse
store_origin: PT
region: Portugal
---

# 40A high current output Supports AGM, Gel, Calcium, Lead Acid, LiFePO4 MPPT solar input with DC priority 40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger

**Brand:** atem power
**Price:** € 307.90
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your off-road lifestyle with smart, unstoppable energy.

## Quick Answers

- **What is this?** 40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger by atem power
- **How much does it cost?** € 307.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/538202047-40a-dc-to-dc-battery-charger-with-anderson-plug-reverse)

## Best For

- atem power enthusiasts

## Why This Product

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

## Key Features

- • **Rugged & Reliable Safety:** Built-in protections against reverse polarity, overvoltage, and temperature keep your gear safe in the wild.
- • **3-Stage Intelligent Charging:** Maximize battery lifespan with optimized charging cycles and automatic LiFePO4 wake-up mode.
- • **Dual-Direction Power Mastery:** Reverse charge your starter battery effortlessly for zero downtime on your adventures.
- • **Smart MPPT Solar Integration:** Harness solar energy efficiently with real-time DC priority switching for uninterrupted power flow.
- • **Universal Battery Compatibility:** Seamlessly charges all major battery chemistries, from AGM to LiFePO4, ensuring ultimate versatility.

## Overview

The ATEM POWER 40A DC to DC Battery Charger is a robust on-board charger designed for 4WDs, RVs, campers, and trailers. Featuring a 40-amp output, it supports multiple battery types including AGM, Gel, Calcium, Lead Acid, and LiFePO4. Equipped with MPPT solar input and DC priority charging, it ensures efficient, reliable power management. Its intelligent 3-stage charging and comprehensive safety protections extend battery life and safeguard your investment, making it the ultimate companion for adventurous professionals.

## Description

Product description This DC to DC charger/in-vehicle DC to DC battery charger uses DC input of vehicle’s alternator to charge batteries prior to solar input. SUGGESTED GAUGE 1 - 5 Metres -- 8AWG, 5 Metres + -- 6AWG Super Versatility This DC to DC charger/in-vehicle DC to DC battery charger can be used with AGM, Gel, Calcium, Lead Acid and LiFePO4 batteries. Smart Protection The in-vehicle DC battery charger comes with reverse polarity, short circuit and over-temperature protections and battery analysis. Re-Selection Ready This DC to DC charger/in-vehicle DC to DC battery charger is fit for all common types of batteries used in 4WDs, caravans, RVs, trucks, campers, etc.. Highly Efficient TECHNICAL SPECIFICATIONS OF 40A DC-DC BATTERY CHARGER

Review: As Order - This is a second time purchase. Good device for charging dc to dc.
Review: Show de bola - Muito bom mesmo

## Features

- Reverse Charging Ready: Take command of your off-road escapades with our DC to DC battery charger. Our DC to DC battery charger is a versatile creation, allowing you to charge in both directions. Simply activate the reverse charge button to effortlessly revive a flat start battery using your auxiliary battery. Keep your starter battery fully charged and ready for thrilling off-roading experiences.
- Unparalleled Compatibility & Efficiency: Our charger is designed to seamlessly work with a wide range of battery types, including AGM, Gel, Calcium, Lead Acid, and LiFePO4 batteries. It harnesses the power of DC input before solar charging, ensuring a stable and consistent energy source. With smart alternator compatibility and MPPT controller inside, it is engineered to exceed your expectations.
- Extend Battery Lifespan to the Max: Embrace our advanced DC to DC charger with an intelligent 3-stage charging process that optimizes efficiency and maximizes the lifespan of your batteries. This ensures they remain in top condition for extended periods. Moreover, our charger features an intelligent LiON mode that automatically activates your sleeping LiFePO4 battery, ensuring prolonged and reliable use.
- Unbeatable Protection and Dependability: We understand the demanding conditions you encounter, which is why our DC to DC charger prioritizes safety above all else. Engineered with comprehensive protection features, including reverse polarity, overvoltage, over-temperature, charge timeout, and lithium battery BMS safeguards, this in-vehicle DC to DC battery charger ensures worry-free charging.
- Easy Operation at Your Fingertips: Enjoy hassle-free operation with our intuitive "SELECT" button, enabling easy switching between batteries. Perfect for 4WDs, caravans, RVs, trucks, campers, trailers, campervans, commercial vehicles, and boats. Equipped with Anderson-style plugs, it seamlessly integrates into your power setup. Rest assured with our 1-year warranty, a testament to our commitment to quality.
- DC Charging Priorty: This dc-dc battery charger is set with DC priority. When both solar panels and DC meet the startup conditions, the vehicle battery input would be selected priorly. Even when the solar panel input is already in the charging process, the controller will still detect in real-time whether the DC input meets the charging conditions. Once the dc input is satisfied with the charging condition, it will automatically switch to DC power supply.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BYMM55LL |
| Amperage | 40 Amps |
| Best Sellers Rank | #196,793 in Automotive ( See Top 100 in Automotive ) #687 in Battery Chargers |
| Brand | ATEM POWER |
| Color | gray |
| Connector Type Used on Cable | Anderson plug |
| Current Rating | 40 Amps |
| Customer Reviews | 4.6 out of 5 stars 15 Reviews |
| Input Voltage | 12 Volts |
| Item Dimensions D x W x H | 5.59"D x 7.48"W x 1.97"H |
| Item Weight | 1.45 Kilograms |
| Manufacturer | ATEM POWER |
| Mfr Part Number | 46055222-bc92-4a8b-8a67-3002ae304599 |
| Number of Ports | 1 |
| Output Voltage | 24 Volts (DC) |
| Product Dimensions | 5.59"D x 7.48"W x 1.97"H |
| Specification Met | energy |
| Warranty Description | 1 Year |

## Product Details

- **Brand:** ATEM POWER
- **Color:** gray
- **Item Weight:** 1.45 Kilograms
- **Output Voltage:** 24 Volts (DC)
- **Product Dimensions:** 5.59"D x 7.48"W x 1.97"H

## Images

![40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger - Image 1](https://m.media-amazon.com/images/I/718cPqtOESL.jpg)
![40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger - Image 2](https://m.media-amazon.com/images/I/81OFaCYMd-L.jpg)
![40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger - Image 3](https://m.media-amazon.com/images/I/71txTtZ+aQL.jpg)
![40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger - Image 4](https://m.media-amazon.com/images/I/71LpK2sPyEL.jpg)
![40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger - Image 5](https://m.media-amazon.com/images/I/71yNWgyV76L.jpg)

## Available Options

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

## Questions & Answers

**Q: Can I use this to charge a second battery in the back of my cargo van? Without a solar panel.**
A: that's what it's for so yes.
the solar is not required.

**Q: If I use solar panel does this also charge starter battery?**
A: Depends on how the unit is connected and the voltage the panel is supplying.

**Q: How many Anderson Plugs does it come with?**
A: It comes with 3. One for solar input. Battery output and 12v charge input

**Q: What is the rating of the solar panel that will work with this unit?**
A: About 12 to 24 volts.

## Customer Reviews

### ⭐⭐⭐⭐⭐ As Order
*by A***H on October 25, 2023*

This is a second time purchase. Good device for charging dc to dc.

### ⭐⭐⭐⭐⭐ Show de bola
*by A***O on June 17, 2025*

Muito bom mesmo

### ⭐⭐⭐ Won't deliver 40A as claimed
*by I***. on April 23, 2025*

The charger is good. But it does not deliver 40A as claimed! I have used it for a month now, and the best i got was 25A max. Sometimes it cannot deliver more than 10A even, depending on the temperature. It is installed in a ventilated location. It's charging a 100 AH Lifepo4 battery, and I run a fridge in my Jeep. I struggle to keep the battery charged.

## Frequently Bought Together

- ATEM POWER 40A DC to DC Battery Charger with Anderson Plug Reverse Charge Solar Input MPPT for AGM, Gel, Calcium, Lead Acid, LiFePO4 Batteries of 4WDs, RVs, Campers, Trailers On-Board Charger
- Renogy 1000W Pure Sine Wave Inverter 12V DC to 120V AC Converter for Home, RV, Truck, Off-Grid Solar Power 110V with Built-in 5V/2.1A USB Port, Hardwire Remote Controller

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-08*