---
product_id: 745346628
title: "12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries"
brand: "renogy rego"
price: "57994 kr"
currency: ISK
in_stock: false
reviews_count: 3
url: https://www.desertcart.is/products/745346628-12v-30a-dc-to-dc-charger-with-mppt-for-solar
store_origin: IS
region: Iceland
---

# 30A max charging current Operates up to 113°F with natural cooling 30V max solar input voltage 12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries

**Brand:** renogy rego
**Price:** 57994 kr
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Charge smarter, live freer — power your adventure with confidence!

## Quick Answers

- **What is this?** 12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries by renogy rego
- **How much does it cost?** 57994 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/745346628-12v-30a-dc-to-dc-charger-with-mppt-for-solar)

## 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

- • **Heat-Resistant Design:** Natural cooling system ensures reliable performance even in scorching 113°F environments.
- • **Power-Packed 30A Output:** Delivers robust 400W charging to keep your batteries juiced on the go.
- • **Smart Adaptive Charging:** Automatically switches between solar and alternator inputs, optimizing efficiency by 50% in low-light conditions.
- • **Bluetooth-Enabled Monitoring:** Pair with optional BT-2 module for real-time system data and full charge profile customization.
- • **Next-Level Solar Compatibility:** Supports up to 30V solar input, expanding your DIY solar setup options effortlessly.

## Overview

The RENOGY 12V 30A DC to DC Charger with MPPT is a versatile, high-efficiency battery charger designed for RVs, marine, and automotive use. It supports multiple battery types including AGM, Lithium, Gel, and Flooded, and features a natural cooling system to maintain peak performance up to 113°F. With an upgraded 30V max solar input and smart charging logic that prioritizes alternator or solar input based on conditions, it delivers up to 400W charging power. Optional Bluetooth connectivity enables advanced monitoring and customization, making it ideal for professional DIYers and mobile living enthusiasts seeking reliable, adaptive power solutions.

## Description

Buy RENOGY REGO 12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Not for everyone - I’ve been running this Renogy DC-DC MPPT combo charger in my overland truck build for a while now, and it’s been solid overall, but there are a few things worth knowing before you buy. First off, build quality is great — the unit feels durable and the terminal screws are easy to torque without stripping, which I appreciated during install. Charging performance is strong once it kicks in, but that’s where it gets a little fussy. The charger doesn’t begin charging until the battery drops below about 12.6 volts (around 60% state of charge for lithium), which can be frustrating if you’re hovering mid-range. I personally don’t like dropping my LiPo that low just to trigger charging. Once it does start, though, it pushes a nice solid boost up to 14.4V. The charger defaults to prioritizing alternator input over solar, which is great for truck setups, but solar still does a decent job throughout the day. That said, if your battery stays above the boost return voltage (around 13.2V), the system may just sit idle thinking the battery is full — even when it’s not. This is especially noticeable with lithium batteries that hold a flat voltage curve and can “trick” the controller into staying off. If you want full control, the Renogy Bluetooth module is an absolute must. Without it, you’re stuck on the default presets, but with it, you can fully customize the charge profile, adjust start/stop voltages, and disable float — making it way more compatible with LiPo or LFP battery setups. Overall, the charger works really well once configured correctly, especially for dual-input rigs, but the default behavior out of the box is a bit rigid for lithium users. If you’re building a solar-plus-alternator system and can get the Bluetooth dongle, this is a reliable and efficient charger that’s worth the money.
Review: Compact 30A Charger, Needs Bluetooth Addon - Fairly basic charger other than having solar input as well as DC to DC. Bluetooth module is sold separately, not included. It's very helpful to have, and required to access all the settings of this charger. A bluetooth module should have been included or built into the unit if it is required to access all functions. Charger works well, though it has some quirks. Doesn't start charging unless the battery voltage is low, does not automatically act as a maintainer, and doesn't top off lithium batteries very well. Does work better for some other chemistries, and it's somewhat reasonably priced for having solar input.

## Features

- 𝐄𝐥𝐞𝐯𝐚𝐭𝐞𝐝 𝐒𝐚𝐟𝐞𝐭𝐲: 30A DC to DC charger with mppt employs natural 𝐜𝐨𝐨𝐥𝐢𝐧𝐠 𝐟𝐨𝐫 𝐡𝐞𝐚𝐭 𝐝𝐢𝐬𝐬𝐢𝐩𝐚𝐭𝐢𝐨𝐧, with enhanced capabilities to dissipate heat effectively. This allows it to operate at 400W charging power even in environments with 𝐭𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞𝐬 𝐮𝐩 𝐭𝐨 𝟏𝟏𝟑°𝐅, ensuring it does not overheat. Furthermore, dc dc charger 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬 𝐚 𝟒𝟎𝐀 𝐀𝐍𝐋 𝐟𝐮𝐬𝐞 𝐚𝐬 𝐚 𝐬𝐭𝐚𝐧𝐝𝐚𝐫𝐝 𝐚𝐜𝐜𝐞𝐬𝐬𝐨𝐫𝐲, providing additional internal protection. With attention to both internal design and external accessories, it achieves superior levels of safety
- 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐢𝐥𝐢𝐭𝐲: In 𝐎𝐯𝐞𝐫𝐥𝐚𝐧𝐝, 𝐑𝐕, 𝐌𝐚𝐫𝐢𝐧𝐞, 𝐚𝐧𝐝 𝐒𝐩𝐫𝐢𝐧𝐭𝐞𝐫 𝐕𝐚𝐧, DIY users can now experience faster charging efficiency with the dc to dc charger 12v while saving installation time for solar components above 175W. The G3 version of this dc dc charger upgrades max solar input voltage from 𝟐𝟓𝐕 𝐭𝐨 𝟑𝟎𝐕, offering more DIY solar options. This dc charger caters to wider mobile living scenarios, covering high/low wattage panels
- 𝟑𝟎𝐕 𝐌𝐚𝐱 𝐈𝐧𝐩𝐮𝐭 𝐕𝐨𝐥𝐭𝐚𝐠𝐞 𝐟𝐨𝐫 𝐌𝐨𝐫𝐞 𝐃𝐈𝐘 𝐎𝐩𝐭𝐢𝐨𝐧𝐬: With the maximum solar panel input voltage upgraded to 30V for the dc to dc charger 12v 30amp, the installation method is affected. Entry-level users can simplify setups by directly connecting panels in series to this 30a dc-dc charger. Advanced users combine series-parallel connections, offering more customization for DIY solar setups
- 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐞𝐝 𝐂𝐡𝐚𝐫𝐠𝐢𝐧𝐠 𝐋𝐨𝐠𝐢𝐜 𝐚𝐧𝐝 𝐇𝐢𝐠𝐡-𝐓𝐞𝐦𝐩 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞:Dc to dc lithium battery charger increases operating temperature, enabling 400W charging even in 𝟕𝟕°𝐅 𝐭𝐨 𝟏𝟏𝟑°𝐅 environments. It optimizes logic with a 'low solar cutoff mode', switching to the starter battery in overcast conditions,𝐛𝐨𝐨𝐬𝐭𝐢𝐧𝐠 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 by 50% in extreme scenarios for this 12v battery charger
- 𝐒𝐦𝐚𝐫𝐭 𝐂𝐡𝐚𝐫𝐠𝐢𝐧𝐠 𝐚𝐧𝐝 𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠: This boat/RV DC to DC charger offers adaptive modes for various batteries, adjusting to solar conditions. 𝐖𝐡𝐞𝐧 𝐩𝐚𝐢𝐫𝐞𝐝 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐨𝐩𝐭𝐢𝐨𝐧𝐚𝐥 𝐁𝐓-𝟐 𝐁𝐥𝐮𝐞𝐭𝐨𝐨𝐭𝐡 𝐦𝐨𝐝𝐮𝐥𝐞 (𝐬𝐨𝐥𝐝 𝐬𝐞𝐩𝐚𝐫𝐚𝐭𝐞𝐥𝐲),the 𝐑𝐄𝐍𝐎𝐆𝐘 DC Home app provides full system data (e.g., voltages, charging current) for monitoring this 12V 30A DC to DC charger

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FCFMV5F4 |
| Best Sellers Rank | #1,328,986 in Automotive ( See Top 100 in Automotive ) #2,308 in Battery Chargers |
| Customer Reviews | 4.7 4.7 out of 5 stars (3) |
| Date First Available | July 3, 2025 |
| Item Weight | 3.5 pounds |
| Manufacturer | RENOGY |
| Product Dimensions | 2.3 x 9.31 x 5.17 inches |

## Product Details

- **Brand:** RENOGY REGO
- **Color:** Black
- **Output Voltage:** 12 Volts
- **Product Dimensions:** 2.3"D x 9.31"W x 5.17"H
- **Specification Met:** UL

## Images

![12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries - Image 1](https://m.media-amazon.com/images/I/618Are6jXDL.jpg)
![12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries - Image 2](https://m.media-amazon.com/images/I/61xgTT5L8yL.jpg)
![12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries - Image 3](https://m.media-amazon.com/images/I/712C0AbKOXL.jpg)
![12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries - Image 4](https://m.media-amazon.com/images/I/71JfGZA+1wL.jpg)
![12V 30A DC to DC Charger with MPPT for Solar & Alternator Input - Smart On-Board Battery Charger for RV, Marine, Car - Charge AGM, Lithium, Gel, Flooded Batteries - Image 5](https://m.media-amazon.com/images/I/71KBsB6ZmHL.jpg)

## Questions & Answers

**Q: What should be noted when connecting the 30A DC-DC charger to solar panels?**
A: Max input: 30V/400W. Do not exceed! Upgrade kit includes solar adapter cable – use it to connect panel to charger.

**Q: How do I disable the "Solar Low Current Shutdown" mode on the 30A DC-DC charger?**
A: The product comes with an automatic "Solar Low Power" shutdown feature for solar power. If you want to disable this feature during use, you can purchase the BT2 Bluetooth module. Connecting it with DC HOME, you can disable this feature through them.

**Q: What size generator is needed to work with the 30A DC-DC charger?**
A: the generator specifications for charging the main battery should be at least 1.5-2 times the charging current of the charger, meaning the generator should be rated at 45A-60A.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not for everyone
*by N***N on July 28, 2025*

I’ve been running this Renogy DC-DC MPPT combo charger in my overland truck build for a while now, and it’s been solid overall, but there are a few things worth knowing before you buy. First off, build quality is great — the unit feels durable and the terminal screws are easy to torque without stripping, which I appreciated during install. Charging performance is strong once it kicks in, but that’s where it gets a little fussy. The charger doesn’t begin charging until the battery drops below about 12.6 volts (around 60% state of charge for lithium), which can be frustrating if you’re hovering mid-range. I personally don’t like dropping my LiPo that low just to trigger charging. Once it does start, though, it pushes a nice solid boost up to 14.4V. The charger defaults to prioritizing alternator input over solar, which is great for truck setups, but solar still does a decent job throughout the day. That said, if your battery stays above the boost return voltage (around 13.2V), the system may just sit idle thinking the battery is full — even when it’s not. This is especially noticeable with lithium batteries that hold a flat voltage curve and can “trick” the controller into staying off. If you want full control, the Renogy Bluetooth module is an absolute must. Without it, you’re stuck on the default presets, but with it, you can fully customize the charge profile, adjust start/stop voltages, and disable float — making it way more compatible with LiPo or LFP battery setups. Overall, the charger works really well once configured correctly, especially for dual-input rigs, but the default behavior out of the box is a bit rigid for lithium users. If you’re building a solar-plus-alternator system and can get the Bluetooth dongle, this is a reliable and efficient charger that’s worth the money.

### ⭐⭐⭐⭐ Compact 30A Charger, Needs Bluetooth Addon
*by D***R on September 20, 2025*

Fairly basic charger other than having solar input as well as DC to DC. Bluetooth module is sold separately, not included. It's very helpful to have, and required to access all the settings of this charger. A bluetooth module should have been included or built into the unit if it is required to access all functions. Charger works well, though it has some quirks. Doesn't start charging unless the battery voltage is low, does not automatically act as a maintainer, and doesn't top off lithium batteries very well. Does work better for some other chemistries, and it's somewhat reasonably priced for having solar input.

### ⭐⭐⭐⭐⭐ DC to DC Charger
*by T***A on December 1, 2025*

This DC to DC charger ended up being the perfect upgrade for my partner's setup. The MPPT solar input is super efficient, and the alternator charging is smooth and consistent with zero voltage drama. It automatically handles AGM, lithium, and flooded profiles without him having to tweak anything. Runs cool, installs easily, and just works the way a smart charger should. Solid, dependable, and definitely worth it. Recommend!

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---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-24*