User's Manual

TERMINAL SETUP
Using the Smart Battery
36 VX 680 INSTALLATION GUIDE
Using the Smart
Battery
The VX 680 terminal uses a Li-ion smart battery (see Accessories and
Documentation for ordering information). The internal logic of the smart battery
prevents both overcharging and undercharging (a fault condition in which the
battery level goes well below the minimum acceptable charge and the battery
becomes unusable).
Smart Battery
Features
The following are features of the smart battery:
• Two Li-ion cells
• A fuel gauge module that:
• monitors state of charge (voltage and percentage of capacity)
• communicates with the terminal (charge parameters and status),
• determines full charge capacity (on charge cycle and uninterrupted
discharge cycle)
• automatically shuts down when cell voltage is extremely low
• A safety circuit that:
• prevents cell damage from overcharge, over-discharge, or overheating
• activates when the battery is left in an unused terminal for extended
periods
NOTE
The VX 680 terminal will operate on battery power or on power pack power. The
smart battery charger in the terminal will be active whenever the power pack is
connected.
NOTE
• Li-ion batteries are not affected by shallow charging. Furthermore, when the
terminal has no external power source or smart battery, the coin cell battery
provides power to the security circuit.
• Uninstalling the battery and unplugging the terminal power pack reduce the
life of the coin cell battery, which does not recharge and must be replaced if
drained.
• Conserve battery power by turning the VX 680 terminal off when not in use.
Keep the Li-ion battery inserted in the terminal and power up the terminal
periodically to check the battery charge. Do not let the battery charge fall
below 10% for extended periods of time as this may permanently diminish the
battery capacity. Recharge the battery by attaching the power cable to the
terminal and plugging the power pack into a wall outlet.