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Since our docks don't have shore power, this is how we keep the 2 starting and 1 deep cycle house battery charged. Each panel is a 40w unit that sits on the bow and charges them all week when we're not at the boat. I string a rope through the feet and tie them off against the railing to prevent them from falling into the water if the weather picks up when we are not there. This image was taken at anchor when we were out for the weekend.
By using them while at anchor I find that it doesn't charge the batteries up but it does prevent them from draining too much while we use them. I bought 25' extension cords from Amazon that let me reach all the way back to the "trunk" where I installed the battery connections and charge controllers. They are also small enough to store nicely in the trunk.
By using them while at anchor I find that it doesn't charge the batteries up but it does prevent them from draining too much while we use them. I bought 25' extension cords from Amazon that let me reach all the way back to the "trunk" where I installed the battery connections and charge controllers. They are also small enough to store nicely in the trunk.