ERT Module
Revision C, August 2013
4-8
To obtain maximum battery life and performance:
• Recharge after each use
• Store in a charged state
• Store at room temperature or lower
• Recharge stored batteries every 9 months
ERT Battery Pack Protection Circuit
ERT Battery Packs have an internal protection circuit. The circuit opens to protect the
battery if the battery voltage drops below a preset threshold. The circuit protects the
battery from going into a deep discharge state. The circuit will activate in the event the
battery is left connected to the ERT Module overnight.
Setting the 50/60 Hz notch filter
The notch filter is selected for 50 or 60 Hz using a screw near the Battery Pack Cable
connection. For 60 Hz remove the screw, for 50 Hz leave the screw in place. The filter
setting is reported in PC-sam’s SYSYEM INFO window .
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