Al,
Confessions of a 12 Volt-o-holic:
I have 17 marine grade 12 V outlets on my TomCat. I think only two of those came with the boat. While the low amp charging features you are seeking should require very little current, and could thusly be put on a multi-outlet, I thought I'd share another way of doing it.
I don't have much love for inverters - those things that make 120 V out of 12 V. You lose 10-15% efficiency, they are heavy, expensive, take up space, and get really hot. You can plug in a cheap inverter into a well-wired 12 V outlet easily.
I had a separate 12V board put in to handle most of the extras. Some were added to empty slots on the nearest circuit breaker/fuse panel. All have the rubber snap-on caps.
I have two double plugs on the aft wall of the cockpit coaming pockets.
I have a double plug on the aft steering station.
I have a double plug behind the aft dinette seat and forward of the foreward dinette seat.
I have a double plug in the forward bunk area, two double plugs at the helm, one double plug in front of the sink cabinet
While this may seem excessive, consider all the things you can use them for: Coffee maker, small oven, hair dryer, radio, backkup gps, cell phones, rechargeable lights, fans, TV, radio, air cleaner, inflator, deflator, compressor (for trailer tires - and , yes, I've needed to do that twice already) iPods, Nuvis (audio books), electric knives, defrosters, hot coffee cups, and many many more.
go for it!
John