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
CA cranking amps
Capacitor A device that can store a charge on conducting plates, it is most frequently called a condenser, as in "points and condenser," in an automobile.
Capacity The ability of a fully charged battery to deliver a specified quantity of electricity (AH) at a given rate (amps) over a definite period of time (hours).
Carbon-Zinc Battery A general-purpose battery, made of a carbon-zinc alloy, such as a AA, AAA, C, D or 9-volt battery. It typically has a lower capacity than alkaline batteries but is used in the same applications, e.g., flashlights.
Cathode (1) The negative (-) terminal of an electrolyte battery. (2) The positive (+) terminal of a primary cell battery.
CCA cold-cranking amps
CCV closed-circuit voltage
Cell (Dry) The basic unit that converts chemical energy directly into electric energy. Typically consists of two electrodes of dissimilar material isolated from one another electronically in immobilized electrolyte. See also Dry-Cell Battery.
Cell (Flooded) The basic unit that converts chemical energy directly into electric energy. Typically consists of a set of positive (+) plates, negative (-) plates, liquid electrolyte, separators and casing. A 12-volt battery has six cells.
Cell Mismatch The condition of a battery pack that contains cells with significant variations in voltage or capacity. In a liquid-electrolyte battery, cell mismatch may be determined using a hydrometer.
Cell Reversal See Reversed Polarity
CEMF counter electromotive force
Charging The process of supplying electrical energy to a discharged battery for conversion to stored chemical energy.
Charging Voltage The voltage used to overcome a battery's internal resistance and to recharge the battery.
Circuit The path followed by a current. See also Open Circuit, Parallel Circuit and Series Circuit.
Closed-Circuit Voltage (CCV) The voltage of a battery when the cell or battery is under a specific discharge load and time interval. See also Open-Circuit Voltage.
Coin Cell A miniature battery — typically a single-cell — such as a keyless-remote or camera battery, that is the size and shape of a coin.
Cold-Cranking Amps (CCA) A rating that is used to define the battery's ability to start an engine under low-temperature conditions. BCI defines it as "the number of amps a lead-acid battery at 0ºF (-17.8ºC) can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt lead-acid battery). See also CA and HCA.
Conditioning (1) The process of restoring capacity to a nickel-cadmium or nickel-metal-hydride battery by deeply discharging and recharging the battery multiple times. (2) The process of preparing a lead-acid battery for a set of standard electrical tests by a precise charge regime.
Conductance The ability of a circuit to conduct current. It is the mathematical reciprocal of electrical resistance.
Conductor A material that allows the movement of electrons (current), such as the metals used for wire and contacts. The best conductors are gold, silver and copper, followed by lead, aluminum and steel.
Constant Current Charging or discharging method in which current does not change appreciably in magnitude regardless of battery voltage or temperature.
Constant Resistance A situation during discharge in which the resistance of the application remains constant.
Constant-Current Battery Charger A battery charger with output current that stays relatively constant as the battery state of charge increases.
Constant-Current Discharge A discharge in which the current drawn from the battery remains constant.
Constant-Voltage Battery Charger A voltage-regulated battery charger that allows a decrease in charging current as the battery state of charge increases.
Continuity The indication that a circuit is complete between two points; continuity does not exist in an open circuit.
Continuous Test A battery test in which the battery is continuously discharged until it reaches a predetermined voltage.
Corrosion A destructive chemical reaction with a reactive metal that forms a new compound. Saltwater or dilute sulfuric acid on steel, for example, forms the corrosion compound, rust. Battery terminals can be subject to corrosion.
Counter Electromotive Force (CEMF) The voltage that is produced within the battery, mainly by chemical means, that opposes the charging voltage.
Cranking Amps (CA) A rating that is used to define the battery's ability to start an engine in moderate temperature conditions. BCI defines it as "the discharge load in amps that a new, fully-charged battery at 32ºF (0ºC) can continuously deliver for 30 seconds while maintaining a terminal voltage equal to or higher than 1.20 volts per cell." This artificially high rating should not be confused with CCA, which is conducted at 0ºF (-17.8ºC).
Cranking Battery An SLI battery
Current (I) The rate that electricity flows through a conductor, such as the wire in a battery cable. Current is measured in amps. See also Alternating Current and Direct Current.
Current Drain The current withdrawn from a battery during discharge. See Drain
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Cutoff Voltage The voltage at the end of useful discharge. When battery voltage is below this level, the connected equipment will not operate and operation is not recommended.
Cycle One sequence of battery activity, which is a battery discharge followed by a complete recharge.
Cycle Life The total number of cycles a battery can undergo before it no longer performs at a predetermined minimum rated capacity.
Cycling The repeated charge/discharge cycle of a battery. Some batteries are rated according to their ability to cycle.
Cylindrical Battery (1) A battery that has a height greater than its diameter. (2) A battery made up of cylindrical cells.
Cylindrical Cell A battery cell design in which the positive (+) plates and negative (-) plates are rolled up and placed into a cylindrical-shaped container. In Interstate's Extreme Performance batteries, this construction is called Spiralcell® technology.