---
product_id: 48881458
title: "40A 12/24V MPPT Solar Charge Controller Bluetooth Solar Charge Controller with LCD Screen for AGM, Gel and Lithium Batteries"
brand: "renogy"
price: "€ 313.12"
currency: EUR
in_stock: true
reviews_count: 13
category: "Renogy"
url: https://www.desertcart.hr/products/48881458-40a-12-24v-mppt-solar-charge-controller-bluetooth-solar-charge
store_origin: HR
region: Croatia
---

# 40A max current output Bluetooth remote monitoring Supports AGM, Gel & Lithium batteries 40A 12/24V MPPT Solar Charge Controller Bluetooth Solar Charge Controller with LCD Screen for AGM, Gel and Lithium Batteries

**Brand:** renogy
**Price:** € 313.12
**Availability:** ✅ In Stock

## Summary

> 🔆 Power your future smarter, safer, and connected.

## Quick Answers

- **What is this?** 40A 12/24V MPPT Solar Charge Controller Bluetooth Solar Charge Controller with LCD Screen for AGM, Gel and Lithium Batteries by renogy
- **How much does it cost?** € 313.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/48881458-40a-12-24v-mppt-solar-charge-controller-bluetooth-solar-charge)

## 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 Auto-Detection:** Seamlessly adapts to 12V or 24V systems for hassle-free setup.
- • **4-Stage Safe Charging:** Optimized charging cycles extend battery life and performance.
- • **Full System Protection:** Built-in safeguards guard against overload, short circuits, and reverse polarity.
- • **Maximize Your Solar Harvest:** 99% tracking efficiency ensures you squeeze every watt from your panels.
- • **Real-Time Monitoring Anywhere:** Bluetooth connectivity lets you track system status via your smartphone.

## Overview

The Renogy 40A MPPT Solar Charge Controller is a high-efficiency device designed for 12V/24V solar systems, compatible with AGM, Gel, and Lithium batteries. Featuring 99% tracking efficiency and 98% conversion efficiency, it maximizes solar energy harvest. Its intelligent auto-detection, 4-stage charging, and comprehensive system protections ensure optimal battery health and safety. Bluetooth connectivity with an LCD screen enables convenient remote monitoring and control via the Renogy DC Home app, making it an essential upgrade for modern solar setups.

## Description

Renogy 40A 12/24V MPPT Solar Charge Controller Bluetooth Solar Charge Controller with LCD Screen for AGM, Gel and Lithium Batteries: desertcart.co.uk: Business, Industry & Science

Review: Good product - Works as it should and kept a 110ah AGM battery toped up with a 200w panel in heavy cloud for a week, brilliant.
Review: Good quality product - simple to fit and use.

## Features

- Maximum power point tracking (MPPT): The Renogy MPPT solar charge controller ensures that every drop of the available current is flushed out of your modules and used for storage. Tracking efficiency reaches 99% and conversion efficiency reaches 98%.
- Automatic detection: the intelligent controller can automatically detect from 12 V / 24 V DC system voltages (lithium battery should be adjusted manually). The LED indicators show the solar charging and battery operation information, customizable parameters and error codes.
- 【4-stage safe charging】Renogy 40Ah charge controller has 4-stage charging (majority, increasing, floating and equalisation) of lead-acid batteries and 2-stage charging (most and increase) for lithium batteries as well as lithium reactivation.
- Full system protection: the self-diagnosis function can assess and protect your system from reverse polarity, overcharging, over-discharge, overload, short circuit and reverse current
- Remote monitoring: The RS232 communication port allows the Renogy Rover to communicate with the Renogy BT-1 Bluetooth module, which allows you to monitor the status and productivity of your panels via the Renogy DC Home app.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MSYGZGI |
| Best Sellers Rank | 3,919 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 3 in Solar & Wind Energy MPPT Controllers |
| Display type | LCD |
| Global Trade Identification Number | 00816360024651 |
| Guaranteed software updates until | unknown |
| Item model number | RNG-CTRL-RVR40 |
| Item weight | 1.1 Kilograms |
| Language | English |
| Manufacturer | Renogy |
| Product Dimensions | 17.3 x 23.8 x 7.24 cm; 1.1 kg |
| UPC | 810009719328 816360024651 |

## Product Details

- **Brand:** Renogy
- **Colour:** Black
- **Material:** Plastic
- **Product dimensions:** 17.3L x 7.2W x 23.8H centimetres
- **Voltage:** 12 Volts (DC)

## Images

![40A 12/24V MPPT Solar Charge Controller Bluetooth Solar Charge Controller with LCD Screen for AGM, Gel and Lithium Batteries - Image 1](https://m.media-amazon.com/images/I/41qGGlWGcQL.jpg)

## Available Options

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

## Questions & Answers

**Q: X How many 100 watt panels can I fit to this controller please**
A: Hello,the maximum solar input power is 520W if your system voltage is 12v. If your system voltage is 24v, the max solar input power is 1040W. -SL

**Q: Can anyone confirm if this is suitable for sealed calcium technology batteries**
A: Surely a sealed lead acid and a sealed calcium battery are of similar type when it comes to charging. The reason you have different charging modes on a charge controller is so that the charger knows the peak and low charge levels. This is so that the controller doesn't run a lead acid battery below 40% or so. Lithium you can deplete 100% of the charge and you will not damage the battery. Lead acid has what we call a memory in the chemistry world. Basically the electrons cannot be be packed tightly together in the lead acid mixture. It fives off an effect that the battery wont hold as much charge anymore after being discharged 100%. Long answer but I would say this will work on a sealed calcium battery as they are the same as a lead acid battery.

**Q: Can I set the mximum battery voldtage at which the charger stops receiving amps? How? Thanks**
A: Sorry....
Just as a "PS" to this....
I'm wondering what you are trying to " manage" ???? 
in 99.9% of all cases, your leisure battery's will always be 12 volt....therefore, your question should have more been about wattage, rather then voltage perhaps  ??
Regards Dee......

**Q: can I connect 24v ( 2 x 100watt 12v in series) panels to this controller, and still have it charge a 12v battery bank?**
A: Maybe you did it and it worked maybe it didn’t however choosing the correct solar charge controller is more than just the wattage of the panels and the voltage of the battery bank

The person that commented about the voltage being higher than 12v is correct in that and it will be however they are absolutely wrong saying that you need to have 12v coming out of your panels to charge your batteries using these charge controllers

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by D***R on 27 June 2025*

Works as it should and kept a 110ah AGM battery toped up with a 200w panel in heavy cloud for a week, brilliant.

### ⭐⭐⭐⭐⭐ Good quality product
*by B***E on 20 April 2025*

simple to fit and use.

### ⭐⭐⭐⭐⭐ Great piece of kit for solar set up
*by M***. on 17 January 2026*

This has been really good as part of our campervan solar panel set up - is easy to install and easy to navigate. Good size , not too bulky. The solar panel has been effectively charging our battery with 0 faults. Great piece of kit. The display is clear, and the menus easy to navigate. One of the best things is the serial port. Renogy make the Modbus protocol information available and there are a few open source projects around to help you build a data logging solution .Given the ease with which i have been able to find information, I can see this becoming a multi-device setup whenever I extend my solar setup!

## Frequently Bought Together

- Renogy Rover 40 Amp 12V/24V DC Input MPPT Solar Charge Controller Auto Parameter Adjustable LCD Display Solar Panel Regulator fit for Gel Sealed Flooded and Lithium Battery
- Renogy 2000W Pure Sine Wave Inverter 12V DC to 120V AC Converter for Home, RV, Truck, Off-Grid Solar Power Inverter 12V to 110V with Built-in 5V/2.1A USB / Hardwire Port, Remote Controller
- Renogy 500A Battery Monitor with Shunt, High and Low Voltage Programmable Alarm, Range 10V-120V up to 500A, 20ft Shielded Cable, Compatible 12V Lithium Sealed, Gel, Flooded Batteries,Black

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-21*