How To Top Up Car Battery With Distilled Water. The reason the battery should be topped up with distilled water is to keep the battery acidelectrolyte at the correct strength. When servicing a sealed maintenance free SMF battery check the State of Charge Indicator.
The answer is no according to an auto electrician. Be careful not to refill the water to the maximum or minimum level in the water but to the exact level. Batteries with trough covers usually have plastic level finders to cut off distilled water when topping up.
The next step is to locate and open the filling caps located on top of the battery they can occasionally be hidden under a flap.
The best way to fill a battery is with deionised demineralised or distilled water. Tap water has containments which build up in the battery like minerals which will build up over the battery plates clogging the pores. This is particularly true for water softened by water softeners which contain chlorides. A car battery delivers electric power that starts the car.
