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Old 11-25-2022, 06:44 PM   #1
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Trickle charge chassis battery automatically?

I want to trickle charge the starter battery automatically when I connect to shore power.

Setup:
House has LiFePO4 batteries
Chassis starter battery is lead acid

Victron Multiplus Inverter/Charger
Victron Orion dc to dc Charger for having the alternator charge the LiFePO4 house batteries

If I have a charger for the lead acid battery hooked up to the AC out on the multiplus wonít this trigger the Orion to start charging the LiFePO4 house batteries (which are already being charged by the Multiplus)?

It seems like Iím setting up a circular charging scenario and maybe thatís perfectly fine?
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Old 11-25-2022, 08:45 PM   #2
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It would be much simpler to add an Amp-L-Start tying the chassis batteries to the house batteries. It pulls a trickle charge from the house while they are being charged by the converter to keep the chassis batteries topped off.
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Old 11-25-2022, 08:47 PM   #3
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Quote:
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It would be much simpler to add an Amp-L-Start tying the chassis batteries to the house batteries. It pulls a trickle charge from the house while they are being charged by the converter to keep the chassis batteries topped off.
Yes that is what Iím proposing to do. Wonít that cause the Orion to start charging back to the house though? I figure the Orion will see the trickle charge and assume itís the alternator. Granted itís way less amps than an alternator would put out.
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Old 11-25-2022, 08:53 PM   #4
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Just pull the hot lead (+) off the chassis battery and put a trickle charger on it.


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Old 11-26-2022, 06:38 AM   #5
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Quote:
Originally Posted by Entegrah View Post
Yes that is what Iím proposing to do. Wonít that cause the Orion to start charging back to the house though? I figure the Orion will see the trickle charge and assume itís the alternator. Granted itís way less amps than an alternator would put out.
From what I understand about the Amp-L-Start is it's a one way charging and does not pass power back to the house batteries. That would be worth contacting the company to make sure.
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Old 11-26-2022, 07:31 AM   #6
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Check you manual for the MultiPlus inverter/charger. Depending on how old it is, it may have the starter battery trickle charger feature built in. All the new MultiPlus 2's have it.
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