Which Car Battery is Best?

Which Car Battery is Best?
Which Car Battery is Best?

Project Farm tests car batteries including Optima AGM, Duralast (Autozone), Everstart (Walmart), Diehard AGM (Sears), SuperStart (O’Reilly), and Autocraft (Advance Auto Parts).

Each battery was tested for internal resistance, cranking amps, charge rate, and cold-cranking amps…