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 Orion-Tr Smart DC to DC Charger 12/12V 30A 360W Isolated

Victron Energy Orion-Tr Smart DC to DC Charger 12/12V 30A 360W Isolated

Product ID: 311095157

Details

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

⚡30A high-current output

📱Built-in Bluetooth control

🔋Compatible with lead acid & lithium

$492.68

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Description

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

DUAL BATTERY DYNAMO - Effortlessly charge your service battery from your alternator and start battery, perfect for vehicles and boats.
POWER UP WITH PRECISION - 30 Amps of professional-grade charging power for rapid, safe battery replenishment.
INSTALLATION MADE SIMPLE - User-friendly screw terminals mean no special tools required—get up and running faster.
FLEXIBLE BATTERY COMPATIBILITY - Supports both lead acid and lithium batteries, with scalable power by linking multiple units in parallel.
STAY CONNECTED STAY IN CONTROL - Seamlessly monitor and adjust your charger via Bluetooth and the VictronConnect app—right from your phone.

The Victron Energy Orion-Tr Smart DC to DC Charger delivers 30A and 360W of isolated, professional-grade charging power. Designed for dual battery systems in vehicles and boats, it supports lead acid and lithium batteries with scalable output. Featuring built-in Bluetooth, it offers real-time monitoring and control via the VictronConnect app. Easy to install with screw terminals and backed by a 2-year warranty, it’s the smart choice for reliable, efficient battery management.

Specifications

ASIN	B07ZKG396Y
Amperage	30 Amps
Best Sellers Rank	5,140 in Automotive ( See Top 100 in Automotive ) 45 in Car Battery Charging Units
Box Contents	Components included in the description
Brand	Victron Energy
Brand Name	Victron Energy
Colour	Blue
Compatible Devices	Lead Acid Batteries, Lithium Batteries
Connector Types	Screw Terminals
Current Rating	30 Amps
Customer Reviews	4.6 out of 5 stars 829 Reviews
Global Trade Identification Number	08719076047698
Input Voltage	12 Volts (DC)
Item Dimensions D x W x H	8D x 18.6W x 13H centimetres
Item Type Name	NT-1101
Item Weight	1600 Grams
Item weight	1600 Grams
Manufacturer	Victron Energy
Manufacturer 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 Warranty	2 year manufacturer
Product dimensions	8D x 18.6W x 13H centimetres
Specification Met	CE
Specification met	CE
Unit Count	1.0 count

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$492.68

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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