Originally Posted by wa8yxm
I have read of folks who fill their flooded wet cell batteries FULL, I mean FULL, and of course this means they spit acid all over the battery compartment.
I have seen folks tell us to fill to the BOTTOM OF THE FILLER TUBE (also known as a split ring) and again they spit acid all over the place.
Fill to 1/8 to 1/4 inch BELOW the bottom of the split ring,, they do not spit so much if you do that.. IF the batteries need charging make it 1/2 inch or more (Above the plates a bit is good), then charge and top off to 1/8 to 1/4.
But cleaning is routine maintenance.
I have always filled my lead acid house batteries to the BOTTOM OF THE FILLER TUBE (also known as the split ring)... and I have never had an acid overflow problem.... (but ONLY if/when the batteries are FULLY CHARGED
If/when the cells are filled to the split rings, (aka: "topped off" with distilled water), when the battery voltage is LOW, ..... the electrolyte will overflow as the batteries take a charge
'96 Safari, 137k miles