I've just replaced my totally dead wet cells with larger AGM
batteries, and with all such projects the feature creep has really hit the pocketbook hard. The last joy was to discover that my older charger
, while having the exact same model number as the currently sold version, does not have the mode for AGM
, nor is it upgradable. Unfortunately, it has this crazy auto-equalize routine that cannot be shut off, which would lay waste to the AGMs (it came with the boat, what can I say?)
So I have been kicking around the idea of getting two 130W solar panels
and a good MPPT
controller instead of an AC charger
. I live in sunny California
, and to be honest the boat does spend the larger share of time in the marina (for now).
So, the real question is... can the MPPT
controller function as an AC charger if I feed it with a DC power supply? To my untrained mind, it would seem logical that the controller wouldn't care where the power source originated, solar
or rectified AC. As a ham, I have a plethora of DC power supplies laying about the house, several of which have adjustable voltage. I was thinking if I supplied the controller with around 14v at 30 amps (max) it would be able act like a fixed AC charger.
Like was said over in the open array radar
thread... you don't see this on many sailboats, which gives one pause to wonder why...