All 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Word Description
Hazardous Waste Waste that is classified by the government as potentially harmful to the environment. Lead and cadmium are examples of chemicals that are particularly hazardous.
HCA hot-cranking amps
HD heavy duty
Heavy-Duty Battery (Commercial) A lead-acid, liquid-electrolyte, starting battery used in medium and heavy-duty trucks, construction vehicles and other off-road vehicles.
Heavy-Duty Battery (Dry-Cell) A dry-cell battery used in low-to-medium-drain applications, such as flashlights and radios. A lower-priced alternative to an alkaline battery, it has less capacity and is unsuitable for high-drain applications.
Hertz (Hz) A unit of frequency equal to one cycle per second.
Hot-Cranking Amps (HCA) A rating similar to CCA that is used to define the current output of a storage battery at 80F (27C). These inflated ratings should not be confused with CCA.
Hourly Rate See amp-hour
Hydrometer An instrument normally a mechanical float type device but can be electronic used to determine the state of charge of a battery by measuring the specific gravity of its electrolyte.
Hz hertz