User's Manual

SkyBitz GLS 400 (REV M) Mobile Terminal Battery Replacement Procedure
SkyBitz GLS 400 Mobile Terminal Battery Replacement Procedure Version 1.2
10 November 2009
Tools Required
• #10 TORX (T10) Torque Wrench or Torque Screwdriver
Batteries Required
• Eight NEW Energizer Ultimate Lithium AA Cells
NOTE: Do Not Use Energizer Advanced Lithium AA Cells.
ONLY USE ENERGIZER ULTIMATE LITHIUM AA CELLS.
9
SkyBitz Battery FAQ #1:
The status of the battery as reported on SkyBitz Insight is derived from several sources. First, the mobile
terminal keeps track of the rate at which the MT uses electricity or electrical charge from a power source
(in milli-Ampere hours). This includes electricity used during the sleep mode. After each scheduled event,
the MT will report to the SkyBitz data center the total accumulated milli-Ampere hours consumed since
the last battery change. There may be no change since the over-the-air resolution of the milli-Ampere
counter is 29 milli-Ampere hours. If the battery is removed for any reason, the total accumulated milli-
Ampere hours recorded in the MT is reset to zero. If that happens then the user should ALWAYS install
eight NEW Energizer Ultimate Lithium AA Cells following the procedure presented in this guide.
The reset process does not happen immediately after battery power is disconnected, but may take up to
two minutes. This is due to capacitors in the circuitry slowly discharging stored electrical charge. This
slow rate of discharge and the low power requirements of the mobile terminal create a situation whereby
the MT continues to function for up to two minutes after battery power is disconnected. This is the reason
why we recommend that after removing the old batteries, the user waits for at least two minutes before
installing new ones. The wait guarantees that the accumulated milli-Ampere hours will be reset to zero in
the MT and SkyBitz Insight will correctly report the battery status.
SkyBitz Insight computes the number of days remaining until the next battery replacement. The battery
status is reported on SkyBitz Insight using a simple indicator. The battery status is indicated as Green
(greater than 365 days left) or Yellow (between 240 and 365 days remaining) or Orange(less than 240 days
remaining) or Red (less than 90 days remaining; battery replacement recommended). SkyBitz Insight also
reports the number of battery days in service since the last battery replacement.
The other source of information required for predicting the battery status is the capacity of the installed
AA cells. The mobile terminal does not know what type of battery is installed. The capacity of the installed
battery cells must be known by SkyBitz. This parameter is not available for the end user to change.
Therefore only install Energizer Ultimate Lithium AA cells. The Energizer Advanced Lithium AA cells have
less capacity than the Ultimate Lithium AA cells. DO NOT MIX CELLS OF DIFFERENT or UNKNOWN
CAPACITY. Mixing old or new cells of unknown capacity with new cells of known capacity does not allow
SkyBitz Insight to properly predict the remaining time before battery replacement is required. Otherwise,
it is possible that the battery or batteries with less capacity will drain before the others. This will create
extra strain on the remaining batteries, resulting in a non-functional MT.