S
ETUP
Using the Battery
640
M
I
NSTALLATION
G
UIDE
19
Using the
Battery
The 640m device uses Li-Polymer rechargeable battery. Battery is only
replaceable by a repair centre.
Battery Features
The following are the features of the battery:
•
Li-Polymer rechargeable battery.
•
Battery charging supports a car charge mode.
•
A safety circuit.
•
Prevents cell damage from overcharge, over-discharge, or overheating.
•
Activates when the battery is left in an unused device for an extended
period
.
Battery Life
Charging and discharging the battery will cause normal wear on the battery.
Connecting the
Terminal Power
Pack
Connect the 640m device to the provided USB cable and insert the other end into
any USB charger head for initial charging.
Each 640m device comes with a power supply cable, USB-A to USB-C cable is
used to connect the device directly to an USB outlet to charge the battery. The
640m unit is equipped with an USB capable universal port.
NOTE
•
Charge the 640m device for 4 hours before initial use.
•
Conserve battery power by turning the 640m device off when not in use. Do
not let the battery charge fall below 10% for an extended period of time as this
may permanently diminish the battery capacity. Recharge the battery by
attaching the USB-C end of the power pack to the device and plugging the
other end of the power pack into a wall outlet.
WARNING
Li-Polymer and Li-Ion batteries must be recycled or disposed off properly as per
local guidelines/regulations.
CAUTION
Using an incorrectly rated power supply may damage the device or cause it not to
work as specified. Before troubleshooting, ensure that the power supply being
used to power the device matches the requirements specified on the bottom of the
device. (See
for detailed power supply specifications.) You can use
any standard USB charger.
WARNING
Do not plug the power pack into an outdoor outlet or operate the device outdoors.
During a transaction, disconnecting the power by unplugging the device from a
wall power while at very low battery charge may cause transaction data files not
yet stored in the device memory to be lost.
