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mabaert asked

Orion-TR 12/12 30A as a charger

Hello,

I have the following situation: I made a camper with a new housebattery, 300A lithium. I wanted to charge it with the engine of the car, so I bought the victron orion-TR 12/12 30A (360W isolated). I connected the car battery with the orion but it does not seem to work. Have I bought the wrong product? Or am I missing something?

Orion DC-DC Converters not smart
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3 Answers
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wkirby answered ·

That is not quite the product that you were after. The Orion-Tr Smart DC-DC Charger is more suited for your needs.

It's not a complete loss though, if you adjust the output Voltage of your current unit to whatever the Float Voltage of your lithium battery is, then it will do a good portion of the charge up to that Voltage. Make sure to disconnect anything at the output before adjusting the Voltage. Reconnect once set.
For full charger capability you really need the product I mentioned above.

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mabaert avatar image mabaert commented ·

I got it working, but ran into a problem:

like I said, the housebattery is connected to the startbattery via the orion. Now, if the orion is "off", the voltage on the startbattery is around 14,3. Then I turn on the orion and that voltage drops to around 13,7. When I measure the input on the orion, it is around 12,7. Output on the orion is 13,4, the voltage of the housebattery at this time.

How do I get the inputvoltage up? Only then I can accuratly measure the 13,6 that I want it to charge on

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mabaert answered ·

Thanks for the response. I’ll look into maybe switching for the Orion smart. But in case the store doesn’t accept, can I do harm to my battery with this? The float charge is about 14,6, so if I turn the voltage on the Orion to max (15V), then it should work to charge it quite full? Accept for the bluetooth, are there any important options for lithiumbattery that come with the Orion smart that I will be missing?

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solardude avatar image solardude commented ·

Definitely don’t set it as high as 14.6V for float. You will kill your lithium battery. You want 13.5V for lithium float. The top half of the lithium battery will charge slowly, but once charged it will do a decent job keeping up.

Wkirby is correct, you will want the dc-dc charger.

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mabaert answered ·

Okay, I asked the store and they won’t take it back. So this is what I have to work with! So, how do I make this work best. Right now it is connected like this: from the startbattery to the Orion (with fuse) and from there to the negative and positive busbars (with fuse) where the housebattery is connected to. But that doesn’t work. The on/off light never lights up. Do I have to connect it straight to the housebattery instead?

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