Marginal battery

Your battery will probably start your car within certain conditions. If the weather turns very cold or hot, your battery may fail. Consider replacing your battery.


Replace battery

Your vehicle may have started today, but there is an increasing likelihood of battery failure. Consider replacing your battery now.


Charge battery

Your battery doesn't have enough of a charge for us to know whether it's good or bad. The battery should be charged and tested again.


good battery

Your battery measures within the manufacturer's specification for CCA (the measuring standard of battery power). Your battery should reliably start the vehicle.

Green arrow  What it all means

how to interpret your battery's state of health as determined by interstate's ed-18® analyzer

  Factors that Determine Battery Life

Climate, individual driving habits and creature comforts, such as GPS devices and DVD players, all factor into determining battery life. That's why it's so important to let us test your battery every three months or so. It only takes a few minutes, and you'll leave with peace of mind.

  Problems run hot and cold

Weather extremes can take a tremendous toll on your vehicle's battery. Compare your battery's age with the average life expectancy of batteries in your part of the country. Consider these facts:

  • Your battery loses about a third of its power when the temperature dips below freezing, and more than half of its power when the temperature falls below zero F.
  • A fully charged battery won't freeze until -76 F; however, a fully discharged battery could start to freeze at 32 F.
  • If your region expects temperatures below 32 F or above 90 F, make sure your battery is up to the task.