---
product_id: 743513127
title: "12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel"
brand: "renogy rego"
price: "RM1236"
currency: MYR
in_stock: true
category: "Renogy Rego"
url: https://www.desertcart.com.my/products/743513127-12v-20a-dc-dc-battery-charger-multi-stage-for-lithium
store_origin: MY
region: Malaysia
---

# 20A max output current 4-stage smart charging profiles Comprehensive electronic protection 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel

**Brand:** renogy rego
**Price:** RM1236
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel by renogy rego
- **How much does it cost?** RM1236 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/743513127-12v-20a-dc-dc-battery-charger-multi-stage-for-lithium)

## 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 batteries and vehicle safe under all conditions.
- • **Tailored 4-Stage Charging:** Optimized charging for Lithium, AGM, Gel, and Flooded batteries with automatic profile selection for peak battery health and longevity.
- • **Bluetooth Monitoring Ready:** Add the BT-2 module to control charging current and track real-time battery stats via the Renogy app—perfect for data-driven power management.
- • **Smart Alternator Detection:** Protects your starter battery by charging only when the engine runs, ensuring zero drain and maximum reliability on the road.
- • **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 4-stage charging algorithm tailored for multiple battery chemistries including Lithium and AGM, and a compact, corrosion-resistant design ideal for harsh environments. With optional Bluetooth monitoring, it offers real-time data and adjustable charging currents, ensuring efficient, safe, and reliable battery management on the go.

## 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

## 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 | #160,504 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #36 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 4.4 out of 5 stars (32) |
| Input Voltage | 16 volts |
| Item Dimensions D x W x H | 2.3"D x 9.31"W x 5.17"H |
| Item Highlight | Renogy REGO 12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel |
| 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 |
| 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_of_direct_current
- **Product Dimensions:** 2.3"D x 9.31"W x 5.17"H
- **Specification Met:** CE, FCC, IEC, UL

## Images

![12V 20A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel - Image 1](https://m.media-amazon.com/images/I/51t1MT7vweL.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.

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-10-12*