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lurenut asked

12v from 24v Charger

I have a Phoenix Smart IP43 24/16(3) charger. Am I able to program the charger to get 12v from 1 of the 3 battery ouputs and 24v from the other 2 outputs ?

If not, is there a way to achieve this ?

Cheers Rob

Phoenix Inverter
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2 Answers
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wkirby answered ·

The 24V models are for charging 24V batteries and the 12V models are for charging 12V batteries.
Alas, it is not possible to program a 24V charger (or part thereof) to become a 12V charger because it is the hardware that defines what Voltage batteries the charger is for.

You'd need to get a 12V charger for the 12V battey(ies).

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lurenut answered ·

Thank you for the reply - can I alternatively connect an Orion-TR Smart 24/12-20A DC-DC charger from the 24v battery to the 12v battery whilst still using Phoenix Smart IP43 24/16(3) charger on the 24v battery ?

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wkirby avatar image wkirby ♦♦ commented ·
Yes, that would work.

You'd just need to be aware that the DC-DC charger would continue to discharge the 24V battery into the 12V battery if you switch the AC charger off. So you'd need to disable the DC-DC charger when switching off the AC charger, a simple switch could be wired into the "remote" terminals of the DC-DC charger. Otherwise you can the "engine shutdown" Voltage settings to limit the discharge of the 24V battery.

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