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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Renogy 12V 30A DC to DC Charger with MPPT, On-Board Battery Charger for Gel, AGM, Flooded and Lithium Batteries, Using Multi-Stage Charging, Charger for Solar Panel and Alternator, in RV, Car, Marine

Product ID: 377555287

Details

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

⚡50A max output current

📱Bluetooth remote monitoring

🔋Multi-chemistry battery compatibility

Description

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

POWER PACKED 50 A OUTPUT - Delivers robust charging current to keep your batteries juiced and ready for any adventure.
NEXT LEVEL REMOTE CONTROL - RJ45 port + BT-2 module unlock real-time monitoring and control via Renogy DC Home app on your phone.
COMPACT LIGHTWEIGHT DESIGN - Sleek 9.6in x 5.7in form factor fits tight spaces—perfect for modern van builds and marine setups.
SMART MULTI STAGE MPPT CHARGING - Maximizes solar and alternator input with bulk, boost, and float phases for 100% optimized battery health.
UNIVERSAL BATTERY CHEMISTRY SUPPORT - Seamlessly charges Gel, AGM, Flooded, and Lithium batteries with tailored multi-stage profiles.

The Renogy 12V 30A DC to DC Charger is a compact, multi-stage MPPT battery charger designed for professional-grade off-grid power management. Compatible with Gel, AGM, Flooded, and Lithium batteries, it intelligently optimizes charging from both alternator and solar inputs. Featuring a robust 50A output, multiple safety protections, and Bluetooth-enabled remote monitoring, it’s engineered to keep your service batteries fully charged and your adventures uninterrupted.

Specifications

ASIN	B093BB5JKF
Amperage	50 Amps
Battery Charge Time	2 Hours
Best Sellers Rank	#34,271 in Automotive ( See Top 100 in Automotive ) #124 in Battery Chargers
Brand	Renogy
Color	Charger for Solar Panel and Alternator
Compatible Devices	Flooded batteries, Gel batteries, AGM batteries, Lithium batteries, LiFePO4 batteries, 12V vehicle systems, RVs, Vans, Cars, Solar panels
Country of Origin	Thailand
Current Rating	50 Amps
Customer Reviews	4.2 4.2 out of 5 stars (326)
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 centimeters
Item Type Name	On-Board Battery Charger for Gel, AGM, Flooded and Lithium Batteries, Using Multi-Stage Charging
Item Weight	3.13 Pounds
Manufacturer	Renogy
Mfr Part Number	for Flooded, Gel, AGM
Model Number	12V 50A
Number of Items	1
Number of Packs	1
Number of Ports	2
Output Voltage	12 Volts (DC)
Specification Met	energy
UPC	810009719014
Unit Count	1.0 Count

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