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The NiMH battery will last longer and perform better if allowed to completely discharge
before recharging. For maximum battery life, it is recommended that the NiMH battery be
completely discharged and recharged once every three months.
Battery Charge Indicator
When the AC-DC adapter is unplugged from the Site Master, the battery indicator symbol
will be continuously displayed at the top left corner of the Site Master display (Figure 2-8).
A totally black bar indicates a fully charged battery. When LOW BATT replaces the battery
indicator bar at the top left corner, a couple of minutes of measurement time remains. If a
flashing LOW BATT is accompanied by an audio beep at the end of each trace, the battery
has approximately one minute of useable time remaining.
Once all the power has drained from the battery, the Site Master display will fade. At this
point, your Site Master will switch itself off and the battery will need to be recharged.
Battery Life
It is normal for NiMH batteries to self-discharge during storage, and to degrade to 80% of
original capacity after 12 months of continuous use.
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Chapter 2 Functions and Operations
BATTERY INDI
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Figure 2-8. Site Master Battery Indicator
Figure 2-9. NiMH Battery Storage Characteristics