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
1600 Grams
Output voltage
12 Volts (DC)
Product dimensions
8.1D x 18.5W x

⚡30A high current output

📱Bluetooth smart monitoring

🔋Supports lead acid & lithium

€ 569.08

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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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	#41,050 in Automotive ( See Top 100 in Automotive ) #164 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 844 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

C**A

Bonne efficacité pour recharger

Installé sur mon van pour recharger ma batterie 🔋 lithium de 150 AH avec l alternateur en plus de mes panneaux solaires , le top , essayer dernièrement en autonomie pour ma glacière a compresseur , éclairage , pompe à eau , recharger ma batterie de VTT , impeccable sur une semaine , voir sur 15 jours.

8.08.2025

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€ 569.08

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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