Batteries draining too fast after solar recharge

When we dry camp during the summer, with 90-percent of our day time spent outside, LED lights, frig on LPG, we use about 16 amps per 24 hours. Our 2 6volt batteries with 225ah will keep us going for up to a week - without solar or a nasty generator. My cheap volt meter was able to give me all that info which is "close enough" for me.