Solar input is still limited to 25v on these? No upgrade planned? So much for connecting a single 450 watt 48v panel.

Another year later the input voltage is, yes, still 25 volt. I was hoping for a 50-75 volt model as well. My space can accommodate 1x 400 watt panel but not 2x 200 watt panels. Bummer.

what is the maximum current it draws from the alternator?.

The victron device shows 49 amps charge without solar hooked to it . A few 1000 mile trips and its workin great . Keeps the battleborn batterys at 14.4.

The manual says: "no temperature compensation when charging lithium battery". Why?

Lithium Batteries can be damaged if the temperature is too low (less than 32 degrees) when charging them. So you have to either have a heater (or a heat pad) to keep the batteries above temp, or you have to disconnect the charging circuit when the temperature is going to be below 32 degrees. That statement is just giving you a heads-up so that you are aware of the consequences that could occur

Can i use this in an rv trailer by connecting the dc side to the output on the trailers converter, instead of an alternator?

Sure you can but won't get a large amount of amps (unless you have a higher amp inverter/Converter) to charge the system.. Just be sure to wire it without a smart alternator which is found on newer cars.

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12V 50A DC to DC Battery Charger with MPPT, On-Board Battery for Gel, AGM, Flooded and Lithium Batteries, Using Multi-Stage Charging, Solar Panel and Alternator

Product ID: 477220803

Details

Brand
Renogy
Colour
Recommended to
Item weight
3.13 Pounds
Output voltage
12 Volts (DC)
Product dimensions
7.6D x 24.4W x

⚡50A high-current output

📱Bluetooth remote monitoring

🔋Multi-chemistry battery compatibility

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Stay charged, stay unstoppable — power your off-grid lifestyle with Renogy’s smart DC-DC charger!

NEXT LEVEL CONNECTIVITY - RJ45 port plus optional Bluetooth module lets you monitor and control charging remotely via your smartphone.
POWER PACKED 50 A OUTPUT - Delivers robust charging to keep your batteries fully energized and ready for any adventure.
COMPACT LIGHTWEIGHT DESIGN - Sleek 3.13 lbs unit fits effortlessly into tight vehicle spaces without compromising performance.
SMART MULTI STAGE MPPT CHARGING - Maximizes solar and alternator input with Bulk, Boost, and Float phases for optimal battery health and longevity.
UNIVERSAL BATTERY COMPATIBILITY - Seamlessly supports Gel, AGM, Flooded, and Lithium batteries for versatile off-grid power solutions.

The Renogy 12V 50A DC to DC Battery Charger features advanced 3-phase MPPT technology to efficiently charge multiple battery types (Gel, AGM, Flooded, Lithium) using solar panels or vehicle alternators. Compact and lightweight, it fits tight spaces and offers remote monitoring via Bluetooth and the Renogy DC Home App, ensuring optimal battery performance and extended off-grid power.

Specifications

ASIN	B093BB5JKF
Amperage	50 Amps
Battery Charge Time	2 Hours
Best Sellers Rank	427,168 in Automotive ( See Top 100 in Automotive ) 1,523 in Car Battery Charging Units 3,633 in Car Batteries & Accessories
Brand	Renogy
Brand Name	Renogy
Colour	Recommended to Match with 60A ANL Fuse
Connector Types	RJ45
Current Rating	50 Amps
Customer Reviews	4.2 out of 5 stars 489 Reviews
Global Trade Identification Number	00810009719014, 00810009719038
Input Voltage	12 Volts
Item Dimensions D x W x H	7.6D x 24.4W x 14.5H centimetres
Item Type Name	Using Multi-Stage Charging, in RVs, Cars, Boats, Yachts, Recommended to Match with 60A ANL Fuse
Item Weight	3.13 Pounds
Item weight	3.13 Pounds
Manufacturer	Renogy
Manufacturer Part Number	for Flooded, Gel, AGM
Model Number	12V 50A
Number of Ports	2
Output Voltage	12 Volts (DC)
Output voltage	12 Volts (DC)
Product dimensions	7.6D x 24.4W x 14.5H centimetres
Specification Met	energy
Specification met	energy
UPC	810009719014

Reviews

J**N

It does what it claims and very well

25.09.2022

J**U

Great features, good price

22.12.2025

R**N

Works Great

13.12.2023

S**G

A great compliment to our trailer

13.09.2025

J**.

Awesome charger!

14.09.2024

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