AQ EXPERT Instruction & Operations Manual
Version 1.13
Page 15 of 63
CHAPTER 4
POWER REQUIREMENTS
The AQ Expert can run off of AC power or the internal Li-Ion rechargeable battery pack.
It is recommended to run the AQ Expert off AC power as often as possible for maximum
operating time.
Power is supplied by a Li-Ion rechargeable battery pack. The battery pack will supply
power to the monitor for approximately 6-8 hours of continuous operation.
A 110
– 240 Volt AC charger having a 12 Volt DC / 2.5A output is supplied with the
instrument. The battery charger will fully charge the battery pack in three hours.
You can check the condition of the batteries at any time:
1. By pressing the
MEASURE
key, (small font screen) and observing the battery
icon, located at the bottom of the display.
2. 2. By pressing the
MEASURE
key, (large font screen), the user can scroll all the
way to the end using the
DOWN
arrow key to observe the battery life shown in
voltage. When the unit is operating on its internal batteries, the voltage
displayed will vary from an initial 8.0 to 8.4 volts (fully charged) dropping slowly to
approximately 7 volts (batteries nearly empty). When the battery voltage drops to
7.1
volts a “low battery” warning will appear on the display. Within a few minutes
later the instrument will automatically turn off, to preserve the remaining battery
power for the sensor bias voltages.
Battery Charger Connected
Battery Full
Battery Empty
Fast-Charge Mode
