I bought a 35 gal water storage tank from Amazon ( which I just looked, and they no longer carry) with a 12 volt RV water pump and a 12 volt battery pack. I also installed a small micron screen on the hose to the inlet side of the pump when filling the water tank. I use the same pump to fill our camper. I used 12 volt 2 pin plug on the end of the pump power cored, then I could either use a small car lighter plug or a small set of alligator clips to provide power with the same 2 pin plugs.
I didn’t plug the impeller in the pump with small bits of leaves, needles etc… after I installed the screen… :S
Picture below is just an example of what a 12 volt 2 pin plug looks like.
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