About halfway through a midsummer heat wave in the Garden State, temperatures of surfaces can pose even more dangers than the temperature in the air.That applies to just about everything under the hood of a car, according to Joe Erickson, AAA Club Alliance Approved Auto Repair territory manager for New Jersey, Delaware, and Connecticut.Erickson said as exterior temperatures rise gradually, that of vehicle equipment spikes “exponentially,” and can create evaporation that may, over time, compromise car batteries.”It’s kind of counter-intuitive, but summer heat is actually harder on a car’s battery than the winter chill,” Erickson said.The typical age of a battery is three to five years, usually tending toward the upper end of that timeframe in (normally) moderate climates like New Jersey’s, according to Erickson.But that does not mean batteries should go unchecked entirely.”In the…