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Term Definition
C1 Rate

Discharge or current rate in amperes; numerically equal to rated capacity of a cell in ampere-hours.

Capacity

The quantity of electricity delivered by a battery under specified conditions, usually expressed in ampere-hours

Capacity Reconditioning

See Reconditioning.

Capacity, Functional Loss Of

Reduction in cell capacity due to nonstandard charging or discharging parameters such as cell temperature, current, and discharge voltage cutoff. See also Failure, Functional.

Capacity, Permanent Loss Of

Reduction in cell capacity from .as new. value, under standard rating conditions, not recoverable by reconditioning. See also Failure, Permanent.

Capacity, Rated

See Nominal Capacity.

Capacity, Residual

Capacity remaining at particular point in time after any set of operating conditions, usually including a partial discharge or long rest.

Capacity, Restorable

See Capacity, Temporary Loss Of.

Capacity, Temporary Loss Of

Reduction in cell capacity that is recovered when the cell is subjected to several reconditioning cycles.

Capacity, Useful

See Ampere Hour Capacity.

Case

The battery box or enclosure which contains the cells and associated connectors and hardware.

CB Series

as pertaining to Concorde Battery Corporation

Cell

An electrochemical device composed of positive and negative plates, separator, and electrolyte which is capable of storing electrical energy. When encased in a container and fitted with terminals, it is the basic building block of the battery.

Cell Reversal

Reversing of polarity within a cell in a multi-cell battery due to over discharge.

Charge

The conversion of electrical energy from an external source, into chemical energy within a cell or battery.

Charge Rate

The rate at which current is applied to a secondary cell or battery to restore its capacity.

Charge Retention

The tendency of a charged cell or battery to resist self-discharge.

Charge, State of

The condition of a storage cell or battery in terms of the remaining capacity.

Charger

Device capable of supplying electrical energy to a battery.

Charging

The process of converting electrical energy to stored chemical energy.

Charging Efficiency

Ratio of the capacity delivered on discharge, after being fully charged, to the capacity needed to restore full charge to the cell or battery.

Concavo-Concave

RG batteries have one-way cell vent valves designed to relieve excess positive internal pressure. Occasionally, when the atmospheric pressure is greater than the internal pressure of the battery, caused by rapid decrease in altitude, the battery case may become temporarily concave.

Connector

An electrically conducive bar or wire which joins individual cells together in a battery.

Constant Current (CI) Charge

Charging technique where the output current of the charge source is held constant. Warning! This procedure may damage the battery if performed on a repetitive basis.

Constant Potential (CP) Charge

Charging technique where the output voltage of the charge source is held constant and the current is limited only by the resistance of the battery.

Container

The cell enclosure in which the plates, separator and electrolyte are held. It is made up of the cell jar and cover that are permanently joined.

Contaminant

Undesirable element, usually in the electrolyte, which reduced the capability of the cell. In vented cells, contaminants can be introduced by use of tap water or operation without vent cap.

Coulometer

Electrochemical or electronic device, capable of integrating current time, used for charge control.

Counter EMF

Voltage or a cell or battery opposing the voltage of the charging source.

Current

The rate of flow of electricity. The movement of electrons along a conductor. It is comparable to the flow of a stream of water. The unit of measurement is an ampere.

Current Density

The amount of electric current passing through a given cross-sectional area of a conductor in amperes per square inch, i.e: the ratio of the current in amperes to the cross-sectional area of the conductor.

Cut Off Voltage

Battery voltage reached at the termination of a discharge. Also known as end point voltage or EPV.

Cycle

On sequence of charge and discharge.

Cycle Life

For secondary (rechargeable) cells or batteries, the total number of charge/discharge cycles before the cell or battery becomes inoperative.

 

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