VeriFone VX 685 GPRS Installation Manual page 53

Battery Cell
The battery cell is the basic electrochemical unit used to store energy. Each cell is
typically rated 3.7 V. The terminal uses one lithium-ion rechargeable cell per
battery pack.
Battery Pack
A battery pack is an assembly of battery cells, safety circuit, temperature sensor,
terminal contacts, and plastic case.
Battery Status, State of Charge
This refers to the amount of electrical charge stored in the battery, expressed as a
percentage of the difference between the fully-charged and fully-discharged
states.
Capacity
This refers to the amount of available energy in a fully charged battery, expressed
in ampere-hours (Ah) or milliampere hours (mAh).
TIP
The capacity of terminal's high capacity battery pack is 2450 mAh typical (new).
Charge
The amount of usable electrical energy stored in the battery, expressed in
coulombs.
Charge Rate
This refers to the amount of current applied to the battery during charging.
NOTE
Charge rate for the terminal's battery: Initially 1 A tapering to zero at end of
charge.
Charge Time
The amount of time required to charge a battery. Maximum charge time refers to
the amount of time to fully charge a fully discharged battery.
NOTE
Typical charge time for the terminal's battery: 2450 mAh in approximately 3.33
hours.
B
ATTERY
General Battery Terms and Definitions
VX 685/VX 690 I
NSTALLATION
I
NFORMATION
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UIDE