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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Orion-Tr Smart DC to DC Charger (Bluetooth) 12/12V 30A 360W | Battery Charger for Dual Battery Systems - Isolated

Product ID: 231905883

Details

Brand
Victron Energy
Color
Blue
Item Weight
1.35 Kilograms
Output Voltage
12 Volts (DC)
Product Dimensions
3.2"D x 5.1"W

⚡30A high current output

📱Bluetooth smart monitoring

🔋Dual battery system support

€ 444.49

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Charge smarter, travel farther — stay powered with Orion-Tr!

TOOL FREE INSTALLATION - User-friendly screw terminals make setup quick and hassle-free—no specialized tools required.
SMART BLUETOOTH CONTROL - Monitor and adjust charging parameters effortlessly via VictronConnect app on your smartphone or tablet.
POWER PACKED 30 AMP OUTPUT - Delivers robust 360W charging for rapid battery recovery and reliable power on the go.
UNIVERSAL BATTERY COMPATIBILITY - Supports both lead acid and lithium batteries, with scalable parallel connections for expanded power needs.
SEAMLESS DUAL BATTERY MANAGEMENT - Optimized for vehicles and boats, ensuring your start and service batteries stay perfectly balanced.

The Victron Energy Orion-Tr Smart DC to DC Charger is a professional-grade 12V/30A isolated charger delivering 360 watts of power. Designed for dual battery systems in vehicles and boats, it features Bluetooth connectivity for real-time monitoring and control via the VictronConnect app. Compatible with lead acid and lithium batteries, it supports parallel connections to scale output. Easy to install with screw terminals, it ensures efficient, safe, and flexible battery charging wherever your journey takes you.

Specifications

ASIN	B07ZKG396Y
Amperage	30 Amps
Best Sellers Rank	#30,685 in Automotive ( See Top 100 in Automotive ) #154 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
Connector Type Used on Cable	Screw Terminals
Current Rating	30 Amps
Customer Reviews	4.4 4.4 out of 5 stars (824)
Global Trade Identification Number	08719076047698
Input Voltage	12 Volts (DC)
Item Dimensions D x W x H	3.2"D x 5.1"W x 5.1"H
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
Manufacturer	Victron Energy
Mfr Part Number	ORI121236120
Model Number	ORI121236120
Output Voltage	12 Volts (DC)
Unit Count	1 Count
Warranty Description	Warranty

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€ 444.49

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

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TrustScore 4.5 | 7,300+ reviews

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