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duffer41 avatar image

RV Upgrade: 24/5000 vs 12/3000 Inverter

RV Upgrade; The coach has on onboard 4kw generator that will be used to charge the batteries in addition to the 950w solar panel array.

I am going to be running 4x 12.8v 200ah lithium batteries and deciding whether to run as 24v paired with a 24/5000 Quattro or run as 12v paired with 12/3000 Multiplus.


If I go the 24/5000 route I am having the panel upgraded from 30amp to 50amp. The quatrro has a much beefier charger in it and will almost cut charging time in half compared to the Multi-plus so I am leaning that direction.


Other than faster charging and additional power headroom, what else am I not considering as potential downsides or upsides to the 24/5000 setup vs the 12/3000 setup?

MultiPlus Quattro Inverter Chargerbattery chargingPhoenix Invertercharge current limit
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wkirby answered ·

How is your PV array set up? The array Voltage to the MPPT charge controller will be important. If it is close to, or less than 24V, that could be a show stopper for a 24V system.

If your PV array Voltage is a good margin higher than 24V or can be configured for a higher PV Voltage then I'd say go for a 24V system.

Any odd 12V appliances can be satisfied with a DC-DC converter.

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duffer41 answered · 0 secs ago


The panels are the dual 190w zamp panels so they can either be run as 95 panels or 190 watt panels. If we go 24 volts they will be wired to to accommodate the 24v needs. We would also have a step down 24-12 component for the 12v needs.

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