We have a ProMariner 2000W PSW inverter/charger combi, seems to work OK. Has an auto transfer.
Our original charger is also an older ProMariner, still working fine.
I'd imagine their inverter-only models would work well enough. ProMariner and Sterling are (usually? always?) the same products, so you could compare their specs. Sometimes one or the other tech manual fills in some blanks...
Not sure what the relationship might be since Marinco acquired ProMariner...
ProMariner prices do usually seem a bit easier to swallow, but I also selected their inverter/charger because of our decent experience with the original charger.
OTOH, PM isn't without their cheesy side; the remote for our PSW unit is labeled QSW... and when I asked their tech said that saves them from having to carry separate properly labeled remotes...
-Chris
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Chesapeake Bay, USA
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