Renogy DCDC30 User Manual

30A | 50A
Version 1.0
Dual Input
DC-DC
On Board Battery Charger w/ MPPT

Renogy DCDC30 Specifications

General

Model	DCDC30
Max Output Current	30A
Bulk Charge Voltage (AGM)	14.4V
Bulk Charge Voltage (Standard)	14.6V
Bulk Charge Voltage (GEL)	14.2V
Bulk Charge Voltage (Lithium)	14.6V
Input Voltage	9V-32V
Output Voltage	12V
Float Charge Voltage (AGM)	13.6V
Float Charge Voltage (Standard)	13.8V
Float Charge Voltage (GEL)	13.8V
Float Charge Voltage (Lithium)	13.6V
Operating Temperature	-4°F ~ 140°F / -20°C ~ 60°C
Efficiency	90%
Protection Features	Over Voltage, Over Temperature, Short Circuit, Reverse Polarity
Weight	2.2 lbs

Summary

Important Safety Instructions

Safety Instruction Symbols

Explanation of DANGER, WARNING, CAUTION, NOTICE, and NOTE symbols used in the manual.

General Safety Precautions

Electrical and Environmental Safety

Precautions for fire, electrical shock, handling water, and general environment.

Electronic Connection Safety

Cable Installation Safety

Guidelines for safe cable routing and protection to prevent damage and injury.

Charger Safety Guidelines

Solar Panel Connection Rules

Critical rules for connecting solar panels, emphasizing battery connection first.

Battery Safety Procedures

Battery Handling and Protection

Safety measures for handling battery acids, preventing short circuits, and explosions.

General Information

Key Product Features

Highlights the main capabilities and benefits of the DC-DC charger.

Product Overview

Component Identification

Identifies and describes the key parts and terminals of the DC-DC charger.

Product Dimensions

Additional Components

Included and Optional Parts

Details components included in the package and optional accessories.

Installation Guide

Mounting and Location

Guidance on selecting a suitable location and mounting the battery charger.

Connecting Temperature Sensor

IGN Signal Wire Connection

Instructions for connecting the IGN signal wire for smart alternators.

Connecting Battery Voltage Sensor

Selecting Battery Type

How to select the correct battery type using the push button and LED indicator.

Connect the Battery Charger

Polarity and Connection Precautions

Critical warnings regarding polarity, torque, and connection sequence.

Typical Setup Diagram

Cable and Fuse Sizing

Fusing Recommendations

Recommended fuse ratings for vehicle input and charger output.

Cable Sizing Recommendations

Recommended cable sizes based on current rating and length.

Operation Modes

LED Indicator Guide

Explanation of LED colors and their status indicators for charging.

Charging Logic Overview

Introduction to the charger's logic for different input sources.

Charging Logic Details

Alternator Input Logic

Details the charging logic when using the alternator as an input.

Solar Panel Input Logic

Details the charging logic when using solar panels as an input.

Dual Input Logic

Explains how the charger prioritizes and combines solar and alternator inputs.

Solar Charge Algorithm

MPPT Technology Explained

Description of how MPPT technology maximizes solar power harvesting.

Current Boost Function

Explanation of how MPPT chargers boost current for efficient charging.

Solar Charging Effectiveness

Four Charging Stages

Overview of the four-stage charging process: Bulk, Boost, Float, and Equalization.

Charging Stage Details

Lithium Battery Activation

Feature to awaken sleeping lithium batteries from over-discharge.

Troubleshooting Guide

Indicator Troubleshooting

Solutions for issues indicated by LED status lights.

Technical Specifications

Battery Charging Parameters