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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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

⚡360W isolated DC-DC power

📶Bluetooth Smart monitoring

🔋30A high-current output

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MOP$3168

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Description

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

ISOLATED SAFE - 360W isolated design protects your vehicle’s electrical system
SCALE YOUR ENERGY - Parallel multiple units to boost output power seamlessly
REMOTE CONTROL READY - Convenient remote on/off switch compatibility for ultimate control
POWER UP WITH PRECISION - Adaptive 3-stage charging for lead acid & lithium batteries
STAY CONNECTED ANYWHERE - Bluetooth-enabled for real-time monitoring & programming

The Victron Energy Orion-Tr Smart 12/12-Volt 30A 360W DC-DC charger is a professional-grade, isolated battery-to-battery charger featuring adaptive 3-stage charging compatible with lead acid and lithium batteries. Equipped with Bluetooth Smart technology, it allows seamless real-time monitoring and programming via mobile devices. Multiple units can be connected in parallel to increase output power, making it ideal for demanding automotive and off-grid applications.

Specifications

ASIN	B07ZKG396Y
Amperage	30 Amps
Best Sellers Rank	#4,790 in Automotive ( See Top 100 in Automotive ) #27 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 1,839 Reviews
Global Trade Identification Number	08719076047698
Input Voltage	12 Volts (DC)
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	1.35 Kilograms
Item weight	1.35 Kilograms
Manufacturer	Victron Energy
Mfr Part Number	ORI121236120
Model Number	ORI121236120
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

H**O

Top

Victron orion top.

16.03.2026

G**M

Funktioniert wie es soll

Gutes Produkt

5.05.2026

L**D

Conforme a la description

5.11.2024

K**E

Mycket bra laddare

Väldigt bra produkt som kom snabbt och fungerar utmärkt. Inbyggd bluetooth möjliggör konfiguration av dom olika inställningarna. Det går att köra produkten som laddare och strömkälla och man kan välja när den skall sättas igång, med mera. Väldigt nöjd!

24.09.2024

L**S

Épico viaje por todo el país gracias a su aplicación en mi motorhome

Epico

1.03.2026

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