can the starter be 12v and the house battery be 24v?

Yes. The Orion I am using is a 12/24 step up transformer. My alternator is 12v fused at 30a running 2- #8 THHN wires back to my transformer 12v input, and 24v output charges my house batteries while I am driving

Orion Tr Smart 12 24 Volt 15 Amp 360 Watt

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 585.19

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

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Description

🔌 Charge smarter, not harder — power your adventure with Victron Energy!

DURABLE WEATHER READY - IP43 protection ensures your charger withstands dust and water splashes for rugged use.
POWER UP WITH PRECISION - 15 amps of reliable, high-efficiency charging for lead-acid and lithium batteries.
STAY CONNECTED ANYWHERE - Built-in Bluetooth lets you monitor and program your charger remotely via your smartphone.
SCALABLE ENERGY SOLUTION - Connect unlimited units in parallel to boost your charging power as your energy needs grow.
SMART CONTROL AT YOUR FINGERTIPS - Remote on/off switch compatibility gives you effortless control over your charging system.

The Victron Energy Orion-Tr Smart 12/24V 15A 360W DC-DC Charger is a compact, non-isolated charger designed for professional-grade adaptive 3-stage charging. Compatible with both lead-acid and lithium batteries, it features Bluetooth Smart for seamless remote monitoring and programming, IP43-rated protection for durability, and the ability to connect multiple units in parallel to scale output power. Ideal for vehicles and boats, it delivers efficient, reliable charging with smart control options.

Specifications

ASIN	B086KWWK44
Amperage	15 Amps
Battery Charge Time	2 Hours
Best Sellers Rank	#115,388 in Automotive ( See Top 100 in Automotive ) #340 in Battery Chargers
Brand	Victron Energy
Built-In Media	Victron Energy Orion-Tr Smart 12/24-Volt 15 amp 360-Watt DC-DC Charger Non-Isolated (Bluetooth)
Color	Blue
Colour	Blue
Compatible Devices	Vehicles and boats with lead-acid or lithium batteries
Current Rating	15 Amps
Customer Reviews	4.7 out of 5 stars 30 Reviews
Input Voltage	240 Volts
Item Dimensions D x W x H	8.1D x 18.5W x 13H centimeters
Item Type Name	Victron Energy Orion-Tr Smart 12/24-Volt 15 amp 360-Watt DC-DC Charger Non-Isolated (Bluetooth)
Item Weight	1.8 Kilograms
Item weight	1.8 Kilograms
Manufacturer	Victron Energy
Mfr Part Number	ORI122436140
Model Number	NT-1080
Output Voltage	12 Volts
Output voltage	12 Volts
Product dimensions	8.1D x 18.5W x 13H centimeters
Specification Met	UL
Specification met	UL
Unit Count	1 Count

Reviews

N**M

Quality victron products

Victron products are solid and communicate well with other victron products. I needed this for my sprinter van build and it has good quality craftsmanship and victron has good customer service. The apps communicate well and good instructions on how to install and use. Solid product. It does warm up a little bit and charges well.

22.01.2026

M**E

Top

Tolles Produkt, schneller Versand.

31.05.2026

M**E

Best Isolator

Best best best.

28.01.2023

M**C

Nice Product

Excellent product for alternator charging my trolling motor lithiums on the water...keeps them topped off.

12.02.2026

W**E

wirkt perfect mit 24v hausbatterie und 12v startbatterie

eingebaut in bus mit euro 6 -smart- dynamo, wirkt perfect mit 24v hausbatterie und 12v startbatterie

27.09.2024

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

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€ 585.19

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Sneha T.

Received my product in pristine condition. Great service overall.