---
product_id: 743513127
title: "Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel"
brand: "renogy rego"
price: "₨5423"
currency: SCR
in_stock: true
reviews_count: 8
category: "Renogy Rego"
url: https://www.desertcart.sc/products/743513127-renogy-rego-12v-20a-dc-dc-battery-charger-multi-stage
store_origin: SC
region: Seychelles
---

# 20A max output current 4-stage smart charging for all battery types Comprehensive electronic protection suite Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel

**Brand:** renogy rego
**Price:** ₨5423
**Availability:** ✅ In Stock

## Summary

> 🔌 Charge smarter, drive farther — power your adventures with confidence!

## Quick Answers

- **What is this?** Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel by renogy rego
- **How much does it cost?** ₨5423 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/743513127-renogy-rego-12v-20a-dc-dc-battery-charger-multi-stage)

## Best For

- renogy rego enthusiasts

## Why This Product

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

## Key Features

- • **Advanced Safety Features:** Built-in overload, short circuit, over-temperature, and reverse polarity protections keep your investment safe and your journey worry-free.
- • **Bluetooth Monitoring Ready:** Add the BT-2 module to control charging current and track real-time & historical battery data via your smartphone—stay connected, stay informed.
- • **Smart Alternator Detection:** Protects your starter battery by charging only when the engine runs, ensuring zero drain and maximum reliability on the road.
- • **Versatile 4-Stage Charging:** Optimized Bulk, Boost, Float, and Equalization modes tailored for Lithium, AGM, Gel, and Flooded batteries for peak battery health.
- • **Compact & Corrosion-Resistant:** Sleek wall-mount design built to withstand humid marine and RV environments without compromising safety or performance.

## Overview

The Renogy REGO 12V 20A DC-DC Battery Charger is a robust alternator-powered charger designed for RVs, vans, and boats with auxiliary batteries. It features intelligent alternator detection to protect starter batteries, a versatile 4-stage charging algorithm compatible with Lithium, AGM, Gel, and Flooded batteries, and a compact corrosion-resistant design ideal for harsh environments. With optional Bluetooth monitoring, it offers real-time data and customizable charging, backed by comprehensive electronic protections and a 2-year warranty.

## Description

desertcart.com : Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel | Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel : Sports & Outdoors

Review: Works as described - Works as described. Seems to have a safe mode for low battery takes about 2 hours to charge my vans lithium battery. Easy to use and set up keep in mind you need the Bluetooth module if you want the phone app.
Review: Worthwile additioon to keep coach battery charged safely - Swapped the battery manager in my class C RV with this. I had some issues with the default battery manager in that it would allow both the chassis battery and the coach battery to be completely drained. I had an issue first camp trip of the spring, my chassis battery had an internal short somehow. So it was basically discharging itself all the time. Well, after its voltage dropped the original battery manager allowed the chassis to completely drain my coach battery. Another trip a couple years ago I forgot to turn on my solar panels, and after a few days the coach battery drained my chassis battery. So I figured the better solution is to use this DC-DC charger. This way when I'm driving the coach battery is getting charged. But it doesn't work the other way, so there's no way for either battery to drain the other.

## Features

- 𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭: Alternator-powered charger – NO solar input. For RVs/vans/boats with auxiliary battery (not for standard cars). Use 10 AWG cable ≤ 3m for 20A output (longer causes shutdown). 𝐁𝐓-𝟐 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐝 𝐭𝐨 𝐫𝐞𝐝𝐮𝐜𝐞 𝐭𝐨 𝟏𝟎𝐀 𝐟𝐨𝐫 𝐥𝐨𝐧𝐠 𝐜𝐚𝐛𝐥𝐞 𝐫𝐮𝐧𝐬.
- 【Alternator Detection – Starter Protection】Renogy Rego 12V DC to DC battery charger features built-in alternator running detection, ensuring charging only occurs when the engine is running – protecting your starter battery from over-discharge. The charger instantly adjusts its mode during vehicle startup, guaranteeing no harm to your starter battery. For smart alternator vehicles, connect the included IGN signal wire for proper operation.
- 【4-Stage Smart Charging – AGM/GEL/Flooded/LiFePO4】 Renogy Rego DC battery charger delivers a complete 4-stage charging algorithm (Bulk → Boost → Float → Equalization) optimized for your battery type. The DC to DC charger 12V automatically selects the ideal profile via front-panel button. LiFePO4 batteries use Bulk + Boost only – float and equalization are disabled for lithium safety. LiFePO4 must have a built-in BMS.
- 【Compact Wall-Mount – Corrosion-Proof & Safe】The Renogy Rego 20A DC-DC battery charger features a second-generation wall-mount design with corrosion-resistant construction – suitable for boat cabins and humid environments. Its internal layout keeps input and output terminals safely spaced to prevent short circuits. Note: Not waterproof – mount in a dry, shaded location away from water and direct sunlight.
- 【Complete Electronic Protection】 DC to DC LiFePO4 charger adopts advanced protection against overload, short circuits, over-temperature, over-voltage, and reverse polarity. In high-temperature environments, it intelligently reduces output power for safe and efficient charging.
- 【Bluetooth Monitoring – BT-2 Sold Separately】Add the BT-2 Bluetooth module (sold separately) to adjust charging current (20A ↔ 10A), monitor real-time data via the Renogy DC Home app, and access up to 365 days of historical logs. Ideal for long cable runs – reduce to 10A to prevent voltage drop.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FBGHPSDJ |
| Amperage | 20 A |
| Best Sellers Rank | #271,588 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #69 in Boat Battery Chargers |
| Brand | RENOGY REGO |
| Color | Black |
| Compatible Devices | 12V batteries including flooded, gel, AGM, and Lithium (LiFePO4) batteries |
| Connector Type Used on Cable | SAE |
| Current Rating | 20 A |
| Customer Reviews | 4.4 out of 5 stars 26 Reviews |
| Input Voltage | 16 volts |
| Item Dimensions D x W x H | 2.3"D x 9.31"W x 5.17"H |
| Manufacturer | RENOGY |
| Mfr Part Number | PWM |
| Model Number | 20A Cold Start |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Ports | 3 |
| Output Voltage | 12 volts_of_direct_current |
| Product Dimensions | 2.3"D x 9.31"W x 5.17"H |
| Specification Met | CE, FCC, IEC, UL |
| Unit Count | 1 Count |
| Warranty Description | 2-year material and workmanship warranty |

## Product Details

- **Brand:** RENOGY REGO
- **Color:** Black
- **Output Voltage:** 12 Volts (DC)
- **Product Dimensions:** 2.3"D x 9.31"W x 5.17"H
- **Specification Met:** CE, FCC, IEC, UL

## Images

![Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel - Image 1](https://m.media-amazon.com/images/I/51t1MT7vweL.jpg)
![Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel - Image 2](https://m.media-amazon.com/images/I/71RySzJ-+iL.jpg)
![Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel - Image 3](https://m.media-amazon.com/images/I/71aWUirS4qL.jpg)
![Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel - Image 4](https://m.media-amazon.com/images/I/61rZNRXqzrL.jpg)
![Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel - Image 5](https://m.media-amazon.com/images/I/717ybwh5RQL.jpg)

## Available Options

This product comes in different **Model** 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: Our charger is compatible with the following 12V battery types by default:AGM，FLD，GEL，SLD our charger also features a custom mode, which can be adjusted according to the specific needs of different batteries to ensure optimal charging performance.

**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

### ⭐⭐⭐⭐⭐ Works as described
*by A***K on January 10, 2026*

Works as described. Seems to have a safe mode for low battery takes about 2 hours to charge my vans lithium battery. Easy to use and set up keep in mind you need the Bluetooth module if you want the phone app.

### ⭐⭐⭐⭐⭐ Worthwile additioon to keep coach battery charged safely
*by M***N on August 3, 2026*

Swapped the battery manager in my class C RV with this. I had some issues with the default battery manager in that it would allow both the chassis battery and the coach battery to be completely drained. I had an issue first camp trip of the spring, my chassis battery had an internal short somehow. So it was basically discharging itself all the time. Well, after its voltage dropped the original battery manager allowed the chassis to completely drain my coach battery. Another trip a couple years ago I forgot to turn on my solar panels, and after a few days the coach battery drained my chassis battery. So I figured the better solution is to use this DC-DC charger. This way when I'm driving the coach battery is getting charged. But it doesn't work the other way, so there's no way for either battery to drain the other.

### ⭐⭐⭐⭐ Great unit that works well but…
*by J***R on July 6, 2026*

I have a few Renogy products and they work well. I took a chance on this and it works well however, if I set it (via the app with Bluetooth adapter) to 20a it will charge then drop and do that over and over. When I set it to 10a it stays charging without any issues. The size is great and connections are solid, just the 20a part is not working as it should.

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**Shop now:** [https://www.desertcart.sc/products/743513127-renogy-rego-12v-20a-dc-dc-battery-charger-multi-stage](https://www.desertcart.sc/products/743513127-renogy-rego-12v-20a-dc-dc-battery-charger-multi-stage)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-08-15*