Will this be ideal on our 24v power vessel to supply the 12v led lights, sound system, vhf etc? or too powerful

That is the purpose of a device like this. 70Amps is just the max it can output. The output is variable based on the live load. Hopefully that helps.

Are there any issues charging a 24v lifepo4 to a 12v lifepo4 with this charger?

I use the Orion 24/12-25 to bulk charge my 12.8 volt nominal LiFePO4 battery bank from my other 25.6 volt nominal LiFePO4 battery as a supplement to the MPPT Solar Charge Controllers with good results

This unit is listed as 70 amps, is that for the output (12volts)?

Yes, that is the full load rating for the 12VDC output

One reviewer states having issues charging 24v batteries from an alternator with the 12/24 model. Can this be safely and effectively done?

This is not the right device for that.

Victron Energy Orion 12 24 Volt 20 Amp Dc Dc

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Description

⚡ Charge smarter, travel farther — power your adventure with Victron Energy!

SEAMLESS CONTROL - Remote on-off connector lets you operate with low power switches or engine controls—no bulky wiring needed.
MAXIMIZE EVERY WATT - Achieves an impressive 93% conversion efficiency to minimize energy loss and boost performance.
POWER UP WITH PRECISION - Delivers a robust 20 amps output for reliable high-load charging on the go.
COMPACT DURABLE DESIGN - Engineered for rugged environments with a sleek, space-saving form factor ideal for mobile setups.
VERSATILE BATTERY SUPPORT - Adjustable output doubles as a battery charger, perfect for 12V starter or accessory batteries in 24V systems.

The Victron Energy Orion 12/24-Volt 20 Amp DC-DC Converter is a high-efficiency, non-isolated power converter designed to step up 12V DC input to 24V DC output with 20 amps of current. Featuring 93% conversion efficiency and a remote on-off control, it supports versatile battery charging applications and is built compactly for durability in mobile and camper van power systems.

Specifications

ASIN	B01BF5BU20
Best Sellers Rank	#61,674 in Electronics ( See Top 100 in Electronics ) #228 in Electrical Power Transformers
Brand	Victron Energy
Built-In Media	Components included in the description
Color	Blue
Colour	Blue
Customer Reviews	4.4 out of 5 stars 125 Reviews
Global Trade Identification Number	08719076022763
Input Voltage	24 Volts
Input voltage	24 Volts
Item Dimensions	19.6 x 8.9 x 6.6 centimeters
Item Weight	0.93 Kilograms
Item dimensions L x W x H	19.6 x 8.9 x 6.6 centimeters
Item weight	0.93 Kilograms
Manufacturer	Victron Energy
Mfr Part Number	ORI122420020
Model Number	ORI122420020
Number of Outlets	1
Output Voltage	24 Volts
Output voltage	24 Volts
Plug Type	Type M
Power Source	Battery operated
Unit Count	1 Count

Reviews

P**M

Quality

Quality piece of kit easy to fit and understand. Works well with my Aferiy power station.

22.04.2026

R**D

Works well as expected nice unit

Nice unit and I use it on a lithium battery. That is a backup to my portable solar charger. I plug this into my solar port for extra battery storage.

18.04.2026

J**A

Carregador de bateria 12vts x 24v

Produto ótimo carrega meu banco de bateria 24v lifepo4 de 200ha

8.06.2025

A**D

used to charge Bluetti AC-180

I've install this device on my VAN in order to charge faster the Bluetti via the PV port. Works Great!

11.10.2024

J**R

Works as designed, perfect for marine use

Works exactly as described! Victron good quality and support.

31.01.2026

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