How do i protect my alternation from this drawing too much current i have a large lifepo4 battery bank?

That’s exactly the point. If you use it to charge from a flood/AGM starting battery, it will limit the draw to the D.C.-D.C. charger rating. So if you have a 60A alternator, choose 20-30A charger

I dont want my battery to be used to start my rv. does the charger contain a backfeed diode (to prevent power coming from the rv battery)?

A reverse current from the RV battery cannot occur. In addition, the Orion-TR Smart is isolated galvanically separated.

I’ve connected the input terminals to the starter battery and confirmed 14.4 v at the input terminals. Why won’t my unit turn on? Defective unit?

There is a green connector inside the box to connect to the "remote" on the left side of the unit. It cannot run if there is a discontinuity between the 2 pole of this remote.

Does this have a built in battery protect, or do i need to add this separately?

Not sure what you mean. It does monitor voltage levels and you can set specific charging profiles. I believe it may have reverse polarity protection in case you hook up the battery wrong.

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Victron Energy DC-DC Bluetooth Charger Orion-Tr ORI 122436120 Smart 12/12-30A (360W) Isolated B2B Booster

Victron Energy DC-DC Bluetooth Charger Orion-Tr ORI 122436120 Smart 12/12-30A (360W) Isolated B2B Booster

Product ID: 370334909

Details

Brand
Victron Energy
Colour
Blue
Item weight
1.35 Kilograms
Output voltage
12 Volts (DC)
Product dimensions
8.1D x 18.5W x

⚡30A high current output

📱Bluetooth smart monitoring

🔋Supports lead acid & lithium

Description

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

ISOLATED DC DC DESIGN - Ensures safe, noise-free charging with professional-grade isolation for sensitive electronics.
BLUETOOTH SMART CONTROL - Monitor and program your charger remotely via Bluetooth for ultimate convenience and control.
POWER PACKED 30 AMP OUTPUT - Delivers a robust 360W charge to keep your batteries optimized and ready for action.
SCALABLE PARALLEL CONNECTION - Connect unlimited units in parallel to boost output power and future-proof your setup.
UNIVERSAL BATTERY COMPATIBILITY - Seamlessly charges both lead acid and lithium batteries, adapting to your power needs.

The Victron Energy Orion-Tr Smart 12/12-Volt 30 Amp 360-Watt DC-DC Charger is a Bluetooth-enabled, isolated charger designed for professional-grade battery management. Compatible with both lead acid and lithium batteries, it offers adaptive 3-stage charging and supports parallel connections to scale output power. Compact and efficient, it empowers users with remote monitoring and control, making it a top choice for automotive and off-grid power solutions.

Specifications

ASIN	B07ZKG396Y
Amperage	30 Amps
Best Sellers Rank	#37,868 in Automotive ( See Top 100 in Automotive ) #133 in Battery Chargers
Brand	Victron Energy
Built-In Media	Victron Energy Orion-Tr Smart 12/12-Volt 30 amp 360-Watt DC-DC Charger Isolated (Bluetooth)
Color	Blue
Colour	Blue
Compatible Devices	Lead Acid Batteries, Lithium Batteries
Connector Type Used on Cable	Screw Terminals
Current Rating	30 Amps
Customer Reviews	4.6 out of 5 stars 839 Reviews
Global Trade Identification Number	08719076047698
Input Voltage	17 Volts
Item Dimensions D x W x H	8.1D x 18.5W x 13H centimeters
Item Type Name	Victron Energy Orion-Tr Smart 12/12-Volt 30 amp 360-Watt DC-DC Charger Isolated (Bluetooth)
Item Weight	1600 Grams
Item weight	1600 Grams
Manufacturer	Victron Energy
Mfr Part Number	ORI121236120
Model Number	ORI121236120
Number of Items	1
Number of Packs	1
Output Voltage	12 Volts (DC)
Output voltage	12 Volts (DC)
Product dimensions	8.1D x 18.5W x 13H centimeters
Specification Met	UL
Specification met	UL
Unit Count	1.0 Count

Reviews

G**M

Funktioniert wie es soll

Gutes Produkt

5.05.2026

L**D

Conforme a la description

5.11.2024

N**N

Muy confiable los productos victron

Buena calidad

1.05.2026

A**A

Victron kvalitet slår det mesta

Fungerar toppenbra, grymma grejror do gör

10.09.2025

Z**Y

Love it!

This device has been working great as my B2B charger in my van conversion. The Bluetooth communication works well and the device has been working reliably for the past 6 month. I find all of my Victron products to be bulletproof. Would recommend!

15.12.2024

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