Shure Incorporated
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Recovering a Battery from Deep Discharge
A deeply discharged battery is one that has been discharged to less than 3.0 volts. When the charger detects a deeply dis
charged battery, it automatically enters recovery mode, which charges the battery using a reduced current. The Recovery icon
is displayed next to the bay number on the home screen. If recovery is successful, the charger exits recovery mode and
charges the battery to capacity. If the battery cannot be recovered in less than 30 minutes, Recovery Failed is displayed and
charging stops.
Tip: Periodically charge batteries using the Storage Mode function to avoid deep discharge and to maintain the ideal battery
storage voltage of 3.8 volts.
Firmware Updates
Firmware is embedded software in each component that controls functionality. Periodically, new versions of firmware are devel
oped to incorporate additional features and enhancements. To take advantage of design improvements, new versions of the
firmware can be uploaded and installed using the Firmware Update Manager tool available in Wireless Workbench software.
Firmware is available for download from www.shure.com.
Troubleshooting and Error Messages
Warnings and Error Messages Troubleshooting Solution
Cold
Charging stopped. Battery temperature must rise above 0° C
for charging to resume.
Hot
Charging stopped. Battery temperature must cool below 60°
C for charging to resume. Avoid direct sunlight and other
heat sources.
Warm
Battery charging stops at 80 percent of full capacity. Allow
battery to cool below 45° C to resume charging to full capaci
ty.
Recovery
Charger has detected a battery that has been discharged
below 3.0 volts and has entered Deep Discharge mode to re
cover the battery charge.
Recovery Failed
Battery discharged beyond recovery — replace battery. To
avoid this condition, periodically charge batteries to prevent
full discharge.
Charging Failed
Battery unable to charge within specified time frame. Check
battery and contacts. If condition persists, replace battery.
Unknown Battery Update the battery charger firmware
Unknown Module Update the battery charger firmware
Read Error
Battery contacts may be dirty or damaged, preventing bat
tery detection by the charger. Check that the battery contacts
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