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) - 12/12-Volt 30 amp 360-Watt - Battery Charger for Dual Battery Systems - Isolated

Orion-Tr Smart DC to DC Charger (Bluetooth) - 12/12-Volt 30 amp 360-Watt - Battery Charger for Dual Battery Systems - Isolated

Product ID: 311095157

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Details

Brand
Victron Energy
Colour
Blue
Product dimensions
8D x 18.6W x
Item weight
1.35 Kilograms
Output voltage
12 Volts (DC)

⚡30A high-current charging

📱Bluetooth smart control

🔋360W power output

Description

🔌 Power your journey smarter, not harder.

SCALABLE POWER BOOST - Connect multiple units in parallel to amplify output—power that grows with your adventure.
HASSLE FREE INSTALLATION - Screw terminals simplify setup—no specialized tools required, get powered up fast.
SMART BLUETOOTH MONITORING - Control and monitor charging status anytime via VictronConnect app on your smartphone or tablet.
EFFORTLESS DUAL BATTERY MASTERY - Seamlessly charge your service battery from your start battery—perfect for vehicles and boats.
UNIVERSAL BATTERY COMPATIBILITY - Optimized for both lead acid and lithium batteries, adapting to your power needs.

The Victron Energy Orion-Tr Smart DC to DC Charger delivers 30 amps and 360 watts of isolated, three-stage charging power. Designed for dual battery systems in vehicles and boats, it supports lead acid and lithium batteries, offers Bluetooth connectivity for real-time monitoring and control, and allows parallel connection for scalable power. Compact and lightweight, it features easy screw terminal installation for professional-grade performance without the hassle.

Specifications

Manufacturer	Victron Energy
Brand	Victron Energy
Model	ORION-TR SMART 12/12-30A (360W) ISOLATED DC-DC CHARGER
Product Dimensions	13 x 7.01 x 18.59 cm; 1.35 kg
Item model number	ORI121236120
Manufacturer part number	ORI121236120
Amperage	30 Amps
Voltage	12 Volts
Wattage	360 watts
Item Weight	1.35 kg

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€ 387.09

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