Ampere-Hour: A unit of measure for a battery's electrical storage capacity, obtained bymultiplying the current in amperes by the time in hours of discharge. A batterythat delivers 5 amperes for 20 hours delivers 100 Amp-Hr of capacity (5 amperestimes 20 hours).

CCA (Cold Cranking Amps): CCA is the dischargeload measured in amps that a new, fully charged battery, operating at 0° F(-17.8° C),can deliver for 30 seconds and while maintaining the voltage above 7.2 volts.

Reserve Capacity Rating: The time in minutesthat the battery will deliver 25 amperes at 80 degrees. This rating representsthe time the battery will continue to operate essential accessories during nightand bad weather driving if the alternator or Generator Fails. Normally thebest buy will be the heaviest battery that best suites your application and thathas the lowest cost (including maintenance) for the total amount of power itwill produce over its service life.

Separator: A divider between the positive andnegative plates that allows the flow of current to pass through it.

Watt: The unit for measuring electrical power,i.e.,the rate of doing work, in moving electrons by or against an electrical potential.Formula: Watts = Amperes * Volts.