Preheat oven to 350F. Line cupcake pans with liners.
In bowl sift flour, sugar, cocoa, baking soda, baking powder and salt. Stir to combine.
My mother used to make 3 holes in the dry ingredients and use some ancient theory when adding her wet ingredients (certain ones in each hole). I haven't noticed a difference either way and so I toss eggs, warm water, buttermilk, vanilla and oil all in at the same time mixing well. Tap bowl on counter a few times to release air pockets
Pour batter evenly into cupcake liners only filling approximately 1/3 full. Drop 4-5 chocolate chips into each cupcake and bake until tops spring back when touched or toothpick inserted comes out clean. Bake 9 minutes for mini cupcakes or 15-18 minutes for large cupcakes
Transfer to wire rack and let cool completely before icing.