Interesting read about the issues with the ProMariner chargers. If I was asked a couple years ago I would have told you absolutely no doubt, great little chargers. I work in a local West Marine store and have for a while, so I've been able to see a couple chargers come and go and what's hot at the time and whatnot.
A few years back we had a training seminar about the ProMariner chargers and they seemed to be the hottest charger on the market with the distributive technology (not having dedicated amperage outputs on each of the charge legs) and we sold a ton of them. They seemed to be a nice compact, relatively inexpensive charger. As a side note, I also do electronics installations and marine electrical. We installed quite a few of these things on various boats. After installing quite a few of these chargers, and having to go down to swap the chargers out (after they stopped working 6 months or so later) we decided in the store to take one apart and see if we could come up with any visible solutions. Interesting find, the fuses on the AC side of the charger seemed to be the problem with a lot of these chargers. Not saying they're horrible chargers by any means, I'm sure they work great when they work, but only stating my experience.
To make a long story longer, when we decided to swap out the charger on the Grady we decided to go with the Xantrex Truecharge 2, an updated version of the old Truecharge (and now also sharing that distributive technology). I hate to add another confusing option into the mix, but I thought I'd throw it out there as it's been great ever since!
