question

sergiart avatar image
sergiart asked

Does Orion-Tr Smart 12/12-30A Non-isolated need a Diode for aux battery?

I am planning a Orion-Tr Smart 12/12-30A Non-isolated for my campervan conversion (solar panels and aux batteries bank of 480A). I want to maintain the 2 circuits (main-engine-starter + solar-appliances) isolated from each other, so the starter battery is not affected by over-consumption of the aux battery, and charge the aux batteries from the alternator when car engine is running.

Do I need an extra diode/relay/something to keep this 2 circuits isolated, or does the Orion-Tr Smart 12/12-30A Non-isolated charge already in one direction only (main-->aux)?


Thanks in advance for the support!

orion-tr smart
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1 Answer
pau1phi11ips avatar image
pau1phi11ips answered ·

Yes, the Orion will only charge the Aux battery and not the Starter battery.

Also, if you have a common negative connection to the chassis for the Starter and Aux battery: Completely draining the Aux battery will have no affect on the Starter battery whatsoever.

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