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Orion-TR Smart 12/12V-30A Isolated Charger in non-isolated design

I want to use a Orion-TR Smart 12/12V-30A Isolated Charger on a new install in a motorhome.

The chassis and house batteries both use the chassis frame as ground. I want to simply tie the two negative sides of the Isolated charger together and use a single cable to ground. I can't see the need for two separate cables to ground. Am I missing something?

Or is this just a bad idea and I should get a non-isolated charger?


markgmack asked

0 Answers

Orion TR and Alternator heat regulation

Working on a new install of a 3x100ah LFP house bank and a FLA start battery here on my sailboat.

Wanting to use the Orion TR Smart BtoB charger to interface all the batteries from my Balmar100 amp alternator through my FLA bank into the Orion and then onto my lithium house bank.

My concern is protection for my alternator.

Since there is no temperature sensor on the Orion I’m considering some external regulation to my Balmar to control voltage based on alternator temperature. I realize the Orion cycles on and off to sense voltage between batteries, but is this enough to protect the alternator from overheating.

Thanks in advance for your help.


masonimage asked
masonimage answered ·

4 Answers

Can I use a non isolated 12-12 30A Orion DC-DC converter to charge Victron LiFePO4 batteries without connecting the negative side to my Euro 6 van

I ordered an smart isolated Orion DC-DC converter to charge the pair of 110AH Victron LiFePO4 batteries my supplier sent a smart non isolated Orion DC- DC converter and I am not convinced their explantation that they supplied a non isolated as it give less radio interference!!

markp asked
Justin Cook - Bay Marine Supply USA answered ·

1 Answer

Force Orion-TR Smart into charging mode

Hello. I just installed an Orion-Tr Smart 12/12/30 in our Winnebago Vita. So far it is working fine with engine detection mode, but I wanted to be able to force it into charging mode regardless of engine state. Our rig has a solenoid that connects the house and chassis batteries for an emergency jump start. I was hoping I could force the Orion into charge mode (removing the isolation between batteries) so I could still use that solenoid. The manual is a little confusing regarding engine detection override. So far I have tried applying 12V to the H pin and to the L pin, with the jumper between the two pins installed and without the jumper. In all cases, the Orion says "charging disabled due to voltage lockout". What am I doing wrong here?

Thanks in advance.

dpreloaded asked
dpreloaded answered ·

2 Answers

Lockout Voltage is activated prior to Shutdown voltage (Orion T-Smart Dc-Dc isolated) when ignition is turned off

We have installed the Orion T-Smart DC-DC charger (isolated) with Remote Key on-off. (Diagram (a) in Ch. 4.4 in the manual). The values are Alternator=Regular, Engine Shutdown Start Voltage/Shutdown are respectively: 14V/13.5V. The values for Lockout Voltage/Restart are respectively: 13.0V/13.3V. When ignition starts, Bulk or Absorption charge starts after the input voltage reaches 14V. When the ignition is turned off, it continues charging until the input voltage drops to 13.0V, (Output is still 14.2V) when Charging is turned OFF ("disabled due to Input voltage lock-out"). Almost immediately after that, the message shown is "disabled due to Input voltage lockout, Engine shutdown detected". Why is the Engine shutdown not recognized at 13.5V as indicated in the Shutdown values? (The Shutdown switch is enabled). Thanks!

jmf27614 asked
jmf27614 commented ·

2 Answers

Remote Ignition switch wiring confusion

I have two wires, one is a ground, one is the ignition power. I wired the ignition power line to the H-pin (on the right) and the ground is wired to the L-pin. Originally these wires were attached to the Trombetta Solenoid that we are replacing. Is this the correct wiring to force the Orion Smart Charger off when the ignition key is removed?

1. If charging the input battery with an external charger, will the extra voltage turn on the isolated dc-dc converter when the voltage reaches the shutdown start voltage or will it recognize that the engine is switched off?

2. How much power is used by the dc-dc converter ((12-12/30) when not charging (off).

jmf27614 asked
jmf27614 answered ·

2 Answers

Amp Draw During Use for Orion-TR Smart 12/12 30A charger

The Orion-Tr Smart 12/12 30a charger is installed in my battery system with a monitor on the load. When I start the vehicle engine with the house battery load at zero, the battery monitor shows the house battery load immediately increasing by 1.5 to 2 amps (give or take). Does this simply reflect the power needs of the Orion-Tr charger while running? I am just trying to explain this load so I understand, and it makes sense that the charger is using power to run itself. Not sure why else the monitor would register that extra couple of amps while the vehicle is running and the Orion device is in operation.

Although, one thing I do not understand is that the Smart DC/DC charger is not connected to the monitoring shunt, but rather connected to a separate post on the house battery. I thought that meant that my shunt (and monitor) would not be picking up on any power used by the Orion DC/DC device. Maybe I just don't understand how the shunt and monitor are working...

jhickok asked
veryactivelife answered ·

1 Answer

Can the cerbo gx monitor DC-DC chargers

I am considering a cerbo gx and touch setup for my vehicle. I can't see anything in the documentation about using it with the Orion dc-dc chargers. Are they compatible? And will the cerbo gx monitor them.

Bill Ritchie asked
Rob Fijn answered ·

1 Answer

MPPT SmartSolar and Orion-TR Smart charge disconnect

As the title says, I have a SmartSolar MPPT Charger and a VE.Bus BMS, to which I have just added a Smart Orion-TR Non-Isolated Charger. I currently already have a VE.Direct non inverting remote on-off cable to connect the BMS charge disconnect output to the MPPT VE.Direct interface. Now I want to also control the Orion-TR via the BMS charge disconnect.

Can the digital charge disconnect output of the VE.Bus BMS drive both the input of the Orion-TR remote on/off and the input of VE-Direct non-inverting cable module? In other words, can I leave the non-inverting remote on/off cable plugged into the BMS and simply add a wire from the BMS to the Orion?

robertsonics asked
stefanie commented ·

1 Answer

Why does the Orion TR Smart 12/24-15 (non-isolated) drive 30A on the output?
I have recently been helping a friend build a system and per my recommendation he has purchased mostly Victron equipment. We have everything up and except for a problem with the Orion TR Smart 12/24-15 (non-isolated).

I expected the output to the batteries to be 15A and the input draw to be a bit more than 30A. However, when the engine starts the Orion starts drawing ~60A off the alternator and outputting ~30A. With 60A across the 2AWG wire to the alternator, there is a large voltage drop that the Orion detects as the engine being off and then turns off the output. The voltage then goes back up and the cycle repeats.

Has anyone seen anything like this before?

filterguy asked
jmarc answered ·

1 Answer

Warum arbeitet nur eins der beiden parallel geschalteten Orion-Tr Smart DC/DC 12/12-30 Ladebooster?


Hi, ein Motorboot mit einer nicht intelligenten Lichtmaschine (70A) mit einer Blei/Säure Batterie(Starterbatterie) und einer LiFePO4 200Ah(Servicebatterie), einen MultiPlus Compact 12/2000/80 und zwei Orion-Tr Smart DC/DC 12/12-30 Ladebooster, isoliert, Parallel geschaltet, leider arbeitet nur einer der beiden Orion-Tr Smart DC/DC 12/12-30 Ladebooster um die LiFePO4 zu laden. Nun meine Frage, warum arbeitet nur eins der beiden Orion-Tr Smart DC/DC 12/12-30 Ladebooster?

thomas-leidenberger asked
Matthias Lange - DE commented ·

1 Answer

Charging Starter and Bow thrust battery from Leisure battery system what size Orion Tr

Hi All , I am living off Grid on a Narrowboat and have a big solar system that supplies pretty much all my power needs 95% of the year and I have back up Gen for the rest . I dont therefore Run my Engine much so except We do move the boat every 2 weeks briefly for service . This means the Starter and Bow thrust batteries get used a little but dont get a proper recharge so are sitting in PSOC most of the time sulphating . I would like therefore to syphon some power from my Solar system ( I have plenty to spare ) into the starter and bow thruster batteries until they are topped off . Currently they are Sealed LA batteries but when replaced will prob be AGM so I dont want to overcharge them . Is Orion Tr good for this ? and if so what size is best for 2 x 100Ah Sealed LA or AGM batteries , they wont be high DOD so prob dont need a very high current . Also what is difference between Isolated and non Isolated and which is best for this application ?

In addition what does the smart bluetooth tell me ? will it tell me SOC of the starter and thruster battery or will I need a Smart Shunt for that ?

Sorry for all the Questions

Simon Phillips asked

0 Answers

Orion-Tr Smart 12/12-18 drawing >28 amps for an extended period?

Ive seen this brought up before but the answers dont really satisfy me with my situation.

I have a 70ah AGM starter battery and Im using the Orion to feed my 350ah lifeopo4 house bank when I choose. It's a short run <8ft between them but I had a problem with tripping a 30amp breaker and 8ga wire getting warm. I switched the wiring out to 4ga and put in a 50a breaker. Much to my surprise the Orion was drawing over 30amps for more than 10mins in 85F ambient temps and 28a after 25mins. The Orion is in a poorly ventilated area also so I was expecting it to derate quickly but I think it would just keep going until it hit my low voltage set point if I didnt interrupt it. Is there any explanation for this?




ronhanson01 asked
ronhanson01 answered ·

2 Answers

Configuring Orion-Tr Smart DC-DC Charger Isolated with MB Sprinter Smart Alternator

Hi, I have installed an Orion-Tr Smart DC-DC Converter/Charger (configured as an isolated charger) in my 2015 MB Sprinter which has a smart alternator. The house batteries are 2 X BattleBorn 100Ah LiFePo batteries. BattleBorn recommends to set chargers to the following settings:

Charge voltage ‘absorption’: 14.4V

Charge voltage ‘float’: 13.6V

However, at those settings the Orion-Tr Smart DC-DC Charger never charges the batteries. But if I change the settings to 13v and 12v then it does charge the batteries under Absorption charge (see attached pics.) I'm getting 14.2v on the input line when the engine is running.

Q: What should all the settings below be set to?

My current configuration:

Under voltage shut down: 13.1V

Under voltage restart: 13.3V

VLockout: 10.4V

VLockout Restart: 10.5V

Charge voltage ‘absorption’: 13V

Charge voltage ‘float’: 12V

Thank you so much in advance!

Note: I installed an isolated version because the non-isolated was not in stock.



davidcolemandc asked
davidcolemandc commented ·

3 Answers

battery settings

i wil be fitting a victron orion-tr smart dc to dc 12-12-30 isolater ...the starter battery is a 12v varta sealed lead acid 100ah and 2 x 110ah leisure sealed lead acid batterys ..now in the victron connect app for battery settings it does not show sealed lead acid battery in drop down menu can anyone tell me which settings i should pick ......thanks

idunne asked
stefanie commented ·

1 Answer

Orion Tr Smart 12/12 18A

I tested my newly installed Orion yesterday and all was good. I then disconnected the alternative battery (after switching off vehicle) and found the Connect App still displays an output on the circuit even with no battery present (when I start the vehicle again) - NO 2nd battery connected.

Is this correct? Does the Orion not detect a no alternative battery present and just continue sending power?


Mark Maritz asked
Mark Maritz commented ·

2 Answers

Best option for charging a secondary 12V battery bank from a primary 48V battery bank


I have a 48V, 440Amp battery bank for the electric engine in my sailboat. I also have a 12V, 200Amp buffer battery for my house bank.

I own the following Victron equipment:

12/12-30 DC-DC Smart Charger

48/12-30 DC-DC Converter

Before I connect this and possibly damage the equipment and battery banks, I thought I would check with the forum. Should I connect the 48V bank to the converter, the converter to the charger, and then the charger to the house bank?



ftlsailor asked
JohnC answered ·

1 Answer

Inconsistent charging from Orion Tr Smart 12/12 30a non-Isolated

Looking for ideas to troubleshoot my alternator charging setup. I replaced a ML-ACR from the AGM setup with 2 Orion Tr Smart 12/12 30a in parallel with the new BattleBorn Lithium batteries.

I took the easy way out and re-used the 2/0 wire run by the original up-fitter from the Transits main terminal back to the power cabinet (10-12' run). There I am using a small busbar to split off 2 50a fused 6awg input wires to each Orion Tr Smart 12/12 30a. Then from the Orions I go to the main busbar.

The Orions will charge for 10mins in Bulk, then flip over to Absorption and not provide any incoming charge. After 10mins the units will sometimes begin charging again while still showing Absorption even though the SOC is at 50%. When the units do begin a new charge cycling on their own, it follows a 5min on, 5min off pattern.

If I remove the jumpers to power the devices off/on, I will get another 10min of bulk charging before it again cycles to Absorption and no charge.

I see input voltages in the 13.8-14.2 range during all this. I have disabled one of the 2 units and see the same behavior, just half the charge amps. I have also turned off the Smart Solar MPPT controller so only one charge source is contributing. My only 2 thoughts are to try and connect via the Ford Customer Connect Point vs direct wire to vans system and/or wire the Orion output directly to the battery incase there is something at the busbar contributing to the issue.


tazminiandevil asked
mateoing commented ·

6 Answers

Orion Tr Smart isolated or non isolated in a recent van (2019)
I intend to use the Orion-TR Smart 12V 12V 30A in my van to charge the auxiliary battery with the engine battery (alternator). Should I prefer the isolated version over the non-isolated ? Why ? My first guess is to use the isolated version to have a galvanic isolation and thus my electrical installation will not disrupt the car electronics (a Renault trafic of 2019 full of electronics)
Many thanks for your answers !

yann-berry asked
stefanie commented ·

1 Answer

AGM with Orion Smart TR 12/12 18 charge current and temp compensation

According to the datasheet of the AGM batteries the charging current without temperature compensation must be limited to 0.2C. When charging a 60Ah AGM with the smallest Orion Smart Tr 12/12-18 the chare current will be 18A or even higher at normal temperature. This corresponds with at least 0.3C. The system will be put in a relative small compartment so I expect that during charging the temperature will rise to 30-40 degrees. Because the Orion Smart does not support temperature compensation and adjustable charge current this seems a less optimal combination. Is there a better solution?

My current thougts are to use a MPPT charger and connect a 12-24V DC/DC converter to the PV input. The Smart MPPT has options for temperature compensation with an external sensor and adjustable charge current setting.

campervan asked
yann-berry commented ·

0 Answers

Orion 121230 update failed mid install

I was just installing my Orion for the first time, loop removed, leisure battery disconnected, Bluetooth light came on, I started the update on the app, it failed at around 20 and now I can’t see it on the app. Bluetooth light is off. I’ve pulled the input and ground, left it for 5 mins then reconnected. Still no Bluetooth. Any ideas?

chris-haresign asked

0 Answers

Orion-Tr Smart 24/12-20A (240W) Isolated DC-DC converter: External Fuses

Hello community,

Orion-Tr Smart 24/12-20A (240W) Isolated DC-DC converter: External Fuses

I am confused about external fuses required in a system with the above device.

The spec shows 25Amp maximum current under nominal operating voltage and 50Amp short circuit on the 12V output channel.


But the fuse advice in the manual is for 30 amps on the 24V channel and 60 amps on the 12V channel - surely these are too high?


I am specifying the integration of this component and am looking at advising 25Amp (24 volt channel) and 50Amp (12 volt channel)

Any confirmation would be appreciated.


andrewg asked
radman edited ·

3 Answers

Orion TR Smart 12|12 30 isolated install location questions.

I'm about out install my Orion and I have a couple location questions.

-It recommends 10cm clearance on both the top and bottom. I'll be right at that. Maybe very slightly less. Being that my location allows me to drill some vent holes behind it, would that help cool it?

-Is there any problem with mounting it on plywood? I know it runs hot, but I'd assume that I don't need to concern myself unless there is plastic or something else that is really sensitive to heat. I could mount it to aluminum brackets if necessary.

christopher-swindell asked
veryactivelife answered ·

1 Answer

MultiPlus Trickle Charging in combination with Orion Tr Smart


we have a standard MultiPlus 24V installation with Lithium batteries (24V) in a truck camper (very similar to the Victron van install, but 24V). To charge while driving, we are using an Orion Tr Smart autodetecting if the engine is running. So far, everything works fine.

Now, I was wondering, if I can use the trickle charge output of the MultiPlus to charge the starter batteries during longer phases of not driving? We are using a cooling box in the drivers cab, that I can't directly connect to the house batteries...

- Is the trickle charge output a proper charger with settings for the starter battery type?

- Would the Orion Tr Smart detect trickle charging as an engine start, due to the increase in voltage? Am I creating a loop this way?

- What would be an alternative?

Thank's so much for you input!

kiko asked
ironman commented ·

1 Answer

Orion-TR Smart DC-DC Chargers: smart/non-smart alternator compatibility?
  • The manual for the Non-Isolated version of the Orion-TR Smart charger (downloaded from Victron) includes instructions on how to set the charger for either "smart" or "non-smart" alternators. Those instructions are in a section of the manual that describes inn detail and with illustrations how to use VictronConnect to set various charger parameters, including type of alternator. But, the Manual downloaded from Victron for the Isolated version of the charger has no instructions at all on how to set the charger for use with a "non-smart" alternator. In fact, that manual appears to be an older and less complete version, compared to the manual for the Non-Isolated charger. For example there is almost no material explaining the VivctronConnect options. Is the Isolated charger manual simply incomplete, or is the Isolated charger itself not capable of easily being switched to use a "non-smart" alternator? Reading both manuals, it appears the Isolated version uses a much more complicated method of sampling the alternator output in order to control the charging function, compared to the method used by the Non-Isolated charger when used with a "non-smart" alternator. Is that impression correct? Thanks!

danc asked
danc edited ·

2 Answers

Orion-Tr Smart Isolated 12/12 30 and ve.bus BMS


I've got an Orion-Tr Smart Isolated 12/12 30 and ve.bus BMS. I'm using the Orion to charge my LiPO4's via my Sprinter's alternator.

I've got a small issue I'm hoping I can get some help with. I'd like to control the Orion's charge state in two ways. Engine ignition and BMS charge disconnect (for battery temp protection). Page 7 of the Orion's manual has a diagram showing how to hook up the BMS in conjunction with an ignition switch, but there's conflicting information. The close up in the diagram and overview are opposite.

Image below. Which is correct? Left or right diagram? BMS charge disconnect into L or H?




Thanks guys! I appreciate it.


conradzik asked
conradzik commented ·

1 Answer

Orion TR smart with back/trickle charging

I don’t know if this is the correct place to post this but if anyone at Victron reads these, id love to one day see an updated Orion TR smart with back charging capability to keep a starter battery topped up from solar/shore power, similar to this Votronic charger

matt-kay asked

0 Answers

Orion TR Smart 12/12/30 input voltage lock-out understanding how it should work

I just purchase Orion TR Smart 12/12/30 non-isolated. I am struggling with settings.

My car has eur6 alternator. I can not get my head around settings on Input voltage lock-out.
How should that work with Engine shut down detection?

I do understand that Engine shut down detection for example 13.1 - 13.3 will set the unit to start if the voltage goes above 13.3 and it will shut down if it drops below 13.1. Now the problem is, I can see on my main battery while the engine is running 11.8 voltage. Meaning maybe Engine shut down detection needs to be set differently, but if I set it up to 11.8 it will drain my battery. So I assume this is where Input voltage lock-out comes handy? But I can not get my head around how that should work and how it should be set.

Can someone explain to me in more details, please?

5ers1 asked
randy-putnam answered ·

1 Answer

Orion TR Smart 12/12-30 Isolated: Lock Out voltage setting

I want to set the lock out value on my Orion to avoid the 12V FLA start battery from continuing to charGe the LFP house bank when my boat engine is off. My engine shut-down voltage is set at 13..1 volts and restart at 13.5 volts. Where should I set the lock out and restart voltages? My FLA resting voltage is 12.8 volts when fully charged. Thanks for any advice.

randy-putnam asked

0 Answers


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