Notable Vx 675 Battery Specifications; Safety/Protection Circuit; Cell Temperature Monitoring; Esd Protection - VeriFone VX 675 Reference Manual

NOTE
Notable VX 675
Battery
Specifications
Safety/Protection
Circuit
Cell Temperature
Monitoring

ESD Protection

Transportation Restrictions
•
It is illegal to ship fully charge batteries by air because they may cause
accidental explosions.
•
Shipment of large quantities of lithium-ion batteries may be subject to
regulatory control.
These precautions do not apply to personal carry-on battery packs.
Storage Precautions
•
Do not fully charge batteries before storage. Instead, keep the batteries
partially charge before storing them, then charge them fully before actual
usage.
•
Do not store batteries when they are fully depleted. If a battery is empty,
charge it for at least an hour before storage. When a depleted battery self
discharges, it may become unusable.
•
Do not stock pile batteries. Avoid buying dated battery stocks even at reduced
prices. In addition, always check the date when the batteries were
manufactured.
The battery is designed to offer optimum protection to the VX 675 terminals and
their users.
The battery features a safety/protection circuit that provides the following benefits:
•
Limits the peak voltage in each cell during charging – a field effect transistor
(FET) opens if voltage level in any cell reaches 4.28V.
•
Prevents cell voltage from dropping too low during discharge – a field effect
transistor (FET) opens if voltage in any cell reaches 2.3V.
•
Limits the current going in and coming out of the battery pack. A field effect
transistor (FET) opens the current path when charge current exceeds 6.5A or
when the discharge current exceeds 7A. This prevents damage caused by
shorting the battery contacts.
A discrete thermistor is built into the battery pack to prevent cell or terminal
damage during charging. The terminal's OS monitors the cell temperature using
the thermistor and automatically shuts down the charger if the temperature

exceeds 50 C or falls below 0
Electrostatic discharge (ESD) protection: ±8KV air discharge, ±4KV contact
discharge

C.
VX 675 B I
ATTERY NFORMATION

Notable VX 675 Battery Specifications

VX 675 R G
EFERENCE UIDE
173