Thanks, G. The plates were barely showing, so not much water loss. Gonna add water and try them again. This is my Wareagle boat, and in no way will 3 batteries fit. Barely enough for 2 and the gas tank. The 1648 is really tight. I have been using only 2 batteries for a couple of years. Always could pull cranks for more than 8 hours, and still plenty of juice for crankng. Something went haywire lately, lol.