Unitech MR650 User Manual download pdf (Page 27)

Power System

Chapter 3

Charging the Backup Battery for the First Time

The unit is equipped with a Lithium-Ion battery pack, however the unit may not power-on

without the external power adapter due to battery discharge. This is a result of a long

storage period. If this is the case, plug the unit into the power adapter and recharge unit

for about 22 hours to fully charge the battery.

Note:

The unit can operate for approximately 2 hours (depending on H/W conguration with

limited back light use) and backup data will be stored for 3 days after the external power

is off. More power is consumed when the backlight is used at 100% brightness and the

ngerprint function is in use. When the MR650 is out of external power the terminal

will go into sleeping mode and the backlight will turn off. Once the panel is touched the

backlight will be on minimum brightness to conserve power.

Environment Consideration for Charging

It is important to consider the environment temperature whenever you are charging

the Lithium-Ion battery pack. The process is most efcient where the temperature

is average or slightly cooler. It is essential that you charge the batteries within the

specied range of -5°C to 50°C. Charging batteries outside of the specied range could

damage the batteries and shorten their charging life cycle.

Power Status Indication

When there is no external power and the display indicates the backup battery is low,

plug the unit into the power adapter and immediately backup data.

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Unitech MR650 User Manual Page 27