There are few things more frustrating than discovering that your car won’t start because the battery is dead. A mechanic can measure the voltage in the battery, in order to determine whether it needs to be replaced. There are two ways to do this. Open circuit voltage test This car battery test determines...

Battery is the power of the car, mainly used to supply power for auto starter and various electrical equipment while starting up, belonging to the start-up battery. At present, the car basically adopts lead-acid batteries, which uses dilute sulfuric acid as an electrolyte, lead dioxide and lead as the...