Can I use tap water to fill me batteries? By Posted June 20, 2014 In Can I use tap water to fill me batteries?2014-06-202014-06-20/wp-content/uploads/2014/06/complete-cart-services-header-logo-dual.pngComplete Cart Services/wp-content/uploads/2014/06/complete-cart-services-header-logo-dual.png200px200px 0 No, we recommend using distilled water It is only $2.00/gallon and will make sure battery life is optimized In South Carolina one gallon will last all year K-Kom Recent PostsBlog Test