AntarcticPilot
Well-Known Member
Battery top-up jug. You fill it with distilled water, place the special spout in the battery opening and press. The water flows out until the right level is reached and then it stops. You can buy them in most auto shops in the USA; I've never found one here. Ideal for difficult battery locations.
I suspect it's a different market. I haven't owned a non-sealed battery for many years. I haven't topped up a battery with distilled water since about 1987!