VeriFone VX 685 GPRS Installation Manual page 54

B I
ATTERY NFORMATION
General Battery Terms and Definitions
NOTE
54
VX 685/VX 690 I
NSTALLATION
Charging
Refers to the process of converting electrical energy, in the form of electric
current, from an external source (charger) into chemical energy within a battery
cell.
Current
The flow of electrons through a conductor, measured in amperes
Cycle
This refers to the number of charge/discharge cycles the battery can endure
before it loses its ability to store useful charge.
The terminal's battery pack retains approximately 70% of its original charge after
300 cycles.
Dead Battery
A battery is considered "dead" when it deep discharges to the point that it can no
longer accept a charge or when it has reached the end of its cycle life.
Deep Discharge
The state of a battery that has been discharged well below its useful charge level.
When a battery is in this state, it may be difficult to recharge. This characteristic
indicates a reduced cycle life.
Discharge Time, Run Time
This refers to the amount of time a battery can provide power to a system before it
discharges fully. It is a function of the load that receives power from the battery.
Discharging
Refers to the process of converting the chemical energy of a battery into electrical
energy, and the transfer of the electrical energy into a load.
Self-Discharge Rate
The amount by which the charge of the battery is reduced without providing any
current to an external terminal or load.
G
UIDE