Help please with Victron Orion tr smart 12-12-30 dc-dc charger

Joined
Dec 7, 2018
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21
Hello,

Need a little electrical/electronics help please.
I have installed a Victron tr smart isolated 12-12-30 dc-dc charger in my camper. I have used 6awg throughout, I’m using two Life Blue 100AH batteries. The input voltage at the charger is constantly varying with the truck running 7ish volts up to 13+ then back down again, no output voltage because of lockout. I had the same setup in my last rig which was a 2015 Tacoma with a Four Wheel Fleet and it worked very well. The new truck is a 2024 F350, the only other variable is that I used a 30A blue sea breaker at the truck battery in the new Ford, in the Toyota I had used a 60A breaker. Victron replaced the charger thinking it defective, the replacement is doing the same thing.

Please help!
 
The Victron DC-DC draws more than 30 A from the alternator - you need a 50 A thermal fuse or breaker at the battery. Note: Be sure your negative line is connected to the chassis where the battery negative is attached (so as to not bypass the battery control module).
 
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