---
product_id: 639015430
title: "Renogy DC to DC Charger 12V 40A - Multi-Stage Charger for LiFePO4, AGM, Gel, Flooded Batteries | Car, RV, Marine & Boat Battery Charger with Bluetooth Compatibility"
brand: "renogy"
price: "₱20660"
currency: PHP
in_stock: true
reviews_count: 5
url: https://www.desertcart.ph/products/639015430-renogy-dc-to-dc-charger-12v-40a-multi-stage-charger
store_origin: PH
region: Philippines
---

# 40A high-current output Bluetooth remote monitoring Multi-stage charging for LiFePO4 & AGM Renogy DC to DC Charger 12V 40A - Multi-Stage Charger for LiFePO4, AGM, Gel, Flooded Batteries | Car, RV, Marine & Boat Battery Charger with Bluetooth Compatibility

**Brand:** renogy
**Price:** ₱20660
**Availability:** ✅ In Stock

## Summary

> 🔌 Power up smartly — never miss a charge, never miss a beat!

## Quick Answers

- **What is this?** Renogy DC to DC Charger 12V 40A - Multi-Stage Charger for LiFePO4, AGM, Gel, Flooded Batteries | Car, RV, Marine & Boat Battery Charger with Bluetooth Compatibility by renogy
- **How much does it cost?** ₱20660 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/639015430-renogy-dc-to-dc-charger-12v-40a-multi-stage-charger)

## 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

- • **Compact & Safe Design:** Wall-mountable with internal short-circuit prevention for worry-free installation.
- • **Advanced Multi-Protection:** Built-in safeguards against overload, short circuit, over-temp, and over-voltage ensure reliable performance.
- • **Smart Alternator Detection:** Charges only when your engine runs, protecting your starter battery from drain.
- • **Bluetooth-Enabled Monitoring:** Track and adjust charging remotely via app, with up to 365 days of performance data at your fingertips.
- • **One-Touch LiFePO4 Activation:** Easily optimize charging with a simple on/off control tailored for LiFePO4 batteries.

## Overview

The Renogy 12V 40A DC to DC charger delivers intelligent multi-stage charging compatible with LiFePO4, AGM, Gel, and Flooded batteries. Designed for vehicles, RVs, boats, and marine use, it features smart alternator detection, compact wall-mount design, comprehensive safety protections, and Bluetooth connectivity for remote monitoring and control.

## Description

Full description not available

## Features

- 𝐒𝐚𝐟𝐞𝐠𝐮𝐚𝐫𝐝 𝐒𝐭𝐚𝐫𝐭𝐞𝐫 & 𝐂𝐡𝐚𝐫𝐠𝐞 𝐒𝐦𝐚𝐫𝐭- Renogy 12v 40A battery charger features built-in alternator detection (charges only when engine runs!) and intelligent strategies. Even at vehicle startup, it instantly adjusts modes, protecting your car battery or marine battery. Perfect charger for RVs, boats, and vehicles.
- 𝐒𝐢𝐦𝐩𝐥𝐞 𝐒𝐞𝐭𝐮𝐩, 𝐒𝐚𝐟𝐞 𝐃𝐞𝐬𝐢𝐠𝐧- 𝐓𝐡𝐞 𝟐𝐧𝐝 𝐠𝐞𝐧 Renogy DC to DC charger boasts a compact, wall-mount design for easy installation. Its unique internal layout ensures safe distance between input/output terminals, effectively preventing short circuits in your RV, boat, or marine application.
- 𝐒𝐦𝐚𝐫𝐭 𝐋𝐢𝐅𝐞𝐏𝐎𝟒 𝐀𝐜𝐭𝐢𝐯𝐚𝐭𝐢𝐨𝐧 & 𝐂𝐨𝐧𝐭𝐫𝐨𝐥- Optimize your lifepo4 battery charger experience! Features intelligent LiFePO4 battery activation for peak performance. Easily enable or disable this function with a simple 𝐨𝐧𝐞-𝐭𝐨𝐮𝐜𝐡 𝐨𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧 (On/Off), giving you full control over your battery's status.
- 𝐂𝐨𝐦𝐩𝐫𝐞𝐡𝐞𝐧𝐬𝐢𝐯𝐞 𝐏𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧 &𝐑𝐞𝐥𝐢𝐚𝐛𝐥𝐞 𝐂𝐡𝐚𝐫𝐠𝐢𝐧𝐠- Engineered for safety, this Renogy DC to DC charger features advanced electronic protection 𝐚𝐠𝐚𝐢𝐧𝐬𝐭 𝐨𝐯𝐞𝐫𝐥𝐨𝐚𝐝, 𝐬𝐡𝐨𝐫𝐭 𝐜𝐢𝐫𝐜𝐮𝐢𝐭, 𝐨𝐯𝐞𝐫-𝐭𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞, 𝐚𝐧𝐝 𝐨𝐯𝐞𝐫-𝐯𝐨𝐥𝐭𝐚𝐠𝐞. Intelligently manages power output even in high-heat marine or RV environments for safe 12v battery charging.
- 𝐁𝐥𝐮𝐞𝐭𝐨𝐨𝐭𝐡 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 & 𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠- Requires Renogy BT-2 Module (𝐒𝐨𝐥𝐝 𝐒𝐞𝐩𝐚𝐫𝐚𝐭𝐞𝐥𝐲), Remotely adjust 12 volt battery charger settings via DC Home app or Renogy One Core(𝐒𝐨𝐥𝐝 𝐒𝐞𝐩𝐚𝐫𝐚𝐭𝐞𝐥𝐲). Track performance and review up to 365 days of charging data for your LiFePO4, AGM, Gel, or Flooded battery.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Dimensions D x W x H | 6"D x 9.31"W x 2.36"H |
| Color | Grey |
| Energy Specifications Met | [PO] |
| Input Voltage | 16 Volts |
| Output Voltage | 12 Volts |

## Product Details

- **Brand:** Renogy
- **Product Dimensions:** 6"D x 9.31"W x 2.36"H
- **Output Voltage:** 12 Volts
- **Input Voltage:** 16 Volts
- **Current Rating:** 2 Amps

## Images

![Renogy DC to DC Charger 12V 40A - Multi-Stage Charger for LiFePO4, AGM, Gel, Flooded Batteries | Car, RV, Marine & Boat Battery Charger with Bluetooth Compatibility - Image 1](https://m.media-amazon.com/images/I/515q7rAKn-L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ The unit runs as advertised and customer service is second to none
*by A***R on July 13, 2025*

Anything that I say should not be mistaken for real knowledge so read at your own risk!😁this unit is what I needed to complete my not so usual project. The customer service from these guys is superb! Michael has been so helpful in guiding me through this one of a kind project. I presented my goal and he helped me achieve it. Thanks Bro!✌️ you are it!

### ⭐⭐⭐⭐⭐ Easy to install
*by M***E on June 19, 2025*

Installed in my van to charge my Temgot 460ah battery off the alternator/battery. Easy to install, easy to set for your battery type. Lights stay on so a small draw but not significant. I got the 40amp version and it's great for my use. Went on an advanture with it on washboard roads for 3 hours- still performs like a champ.

### ⭐ this device drained my starter battery, repeatedly
*by S***N on December 12, 2024*

I installed the device correctly with the ignition wire that only turns on the device when the engine is running. I talked with renogy twice and we confirmed all the connections were perfect.. This device continued to drain my starter battery and it was also popping 100 amp in line fuses between the starter battery and the DC charger, as I have braided 4AWG going from the starter battery to this charger per the manual. renogy tried to tell me that my starter battery was no good. I informed them that if my starter battery was not providing enough electricity the Red fault light would be on, which is one of the design outputs of their DC charger, per thier manual. I also explained to them if there’s not enough electricity coming from the starter battery it’s not going to pop 100 amp breaker repeatedly when i'm driving. i am military and I called back to duty after i bought this charger so I couldn’t install this until three months after I bought it. amazon they said there’s no return option available. I noticed on the 40 amp charger. They did an upgrade which is an automatic alternator checker so I think this problem is well known.UPDATE: I contacted Renogy 10 days ago and they asked for photos of my installation of the charger which was done per the manual. I informed them the device failed right out of the box. I sent the photos in and they said it would be 24-48hr and i haven’t heard from them after 10 days. I then called them and was transferred many times and received the run around. they are now asking for me to conduct resistance testing on thier own device not connected to anything and to test my starter battery. they said if they’re happy with these results, they’ll send me a return authorization for me to send the device back to them. They will test it and either send it back to me or send another device back to me. This whole process will take many many weeks. so ridiculous. I have no faith in their device now. I’ve never had a company ask me to do electrical tests on their own device to ensure that it works before i can return it to them.

## Frequently Bought Together

- Renogy 12V 40A DC to DC Battery Charger, Using Multi-Stage Charging in RVs, Commercial Vehicles, Boats, Yachts
- 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ph/products/639015430-renogy-dc-to-dc-charger-12v-40a-multi-stage-charger](https://www.desertcart.ph/products/639015430-renogy-dc-to-dc-charger-12v-40a-multi-stage-charger)

---

*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-22*