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Options for Charging batteries while away from the boat OR away from shore power
I'm asking for guidance on how to keep the batteries charged.
We are preparing ourselves to own and maintain our first sailboat (26-28'). I've been researching batteries and battery charging but haven't been able to find an answer to my most basic question: how do we charge our batteries while we are away from shore power OR when we've left the boat in its slip for the week?
Charging While Away From the Boat
I THINK I understand that, if we have shore power at our slip, we can simply plug in a "smart" 3-stage charger and leave it to charge and condition the batteries. If we select a marina that has shore power, that is what we would do during the week while we're gone. BUT, if we don't have have shore power at our slip, we would need to take the batteries home with us. (We used to do that when we owned a tiny travel trailer, using a PulseTech Xtreme XC100 charger at home) We'd rather not do that, as we hope to have two house batteries.
What do you do when you leave the boat for a few weeks at a time during sailing season?
Charging While Away Cruising
Can we bring our Honda eu2000i generator on board with us when we're away long enough to need to recharge the batteries?
Where would you suggest/recommend we store it while we're sailing?
If you would discourage us from doing that, what are our other options? I understand the need for a 3-stage smart charger to ensure the batteries are kept in good condition, but what power source would we use to power the charger itself?
I expect that this is a really, really basic set of questions --- so basic that I haven't found an answer yet! Thanks for any help you can offer.