Doran 2200 Series, Instruction Manual

Page: 28 / 136

27
Battery Operation
Indicators with the battery option installed are equipped with an internal rechargeable
sealed lead-acid battery and charging circuit. The scale is designed to run continuously
for 50 hours (with one 350 ohm load cell) on a fully charged battery. To significantly
extend the battery life, enable the Unit On Timer parameter which will power down the
scale automatically after a period of non-use. The default setting shuts off the indicator
after 30 seconds of non-use.
Use of multiple load cells, Fiber Optic, Ethernet, 4-20mA, Wireless Communication (10
hrs), Remote Display, USB, Barcode Scanner, or Relay options will reduce battery life.
For multiple load cell applications, battery life is significantly reduced. For example, with
a configuration of four 350 load cells, the low battery indication will begin at about 39
hours of continuous use. Load cells with higher input impedance values such as 1000
will display low battery indication after 47 hours.
The charging circuit will fully charge the battery in approximately four to eight hours
whether the scale is on or off. To charge the battery, plug the line cord into a standard
115V (230V optional) wall outlet. The scale can be used while recharging the battery. In
fact, the scale can be used with the AC charger cord plugged in on a continuous basis.
Note: Indicators installed with multiple load cells, Bluetooth, Fiber Optic, Ethernet, 4-
20mA, Wireless Communication, Remote Display or Relay options will increase charge
time.
If an AC power failure occurs with the charger plugged in, the scale's battery
immediately takes over to provide uninterrupted scale operation.
The BATT annunciator indicates that the battery is in need of recharging. The scale will
continue to operate accurately for approximately one hour (with one 350 ohm load cell)
after the BATT annunciator is lit. When the battery is too low to operate the scale, the
scale simply turns off and will not turn on again until the battery is recharged. At this
point, when the ZERO (ON/OFF) is pressed, the BATT annunciator will be lit as the
scale performs its display test and then the scale will shut down immediately.
The battery should be able to support at least 300 recharges before the end of the
battery life is reached. This is an estimate as many factors can affect battery life, such
as severe temperature changes and charging before the scale displays Low Battery.