Routine Maintenance
Efficia CM Series Service Guide 2-5
Maintaining the Batteries
Reconditioning the Battery
Reconditioning the battery reduces the Max Error value, and in turn, increases the
accuracy of the Relative Charge.
The actual usable capacity of the battery will decrease as the battery ages. As Max
Error
increases, reconditioning is required before Full Capacity will accurately show this
decrease.
Philips recommends that you condition the battery when either of the following
conditions are met:
• The Full Capacity is half of the Design Capacity;
• The Max Error is 8% or greater.
Caution Do not disconnect the monitor from AC power or remove the battery during the
reconditioning process. If the monitor is disconnected, reconditioning stops and
must be restarted when the power is restored.
To recondition the battery:
Full Capacity The predicted capacity of the battery when it is fully
charged
Design Capacity The theoretical or nominal capacity of a new battery
Design Voltage The theoretical voltage of a new battery
State Register The value of the battery state register
Mode Register The value of the battery mode register
Charging Voltage The desired charging voltage
Charging Current The desired charging current
State of Health (SOH) Full Capacity / Design Capacity
Remaining Capacity The predictive remaining battery capacity
Charger State Register The value of the charger state register
Parameter Description
Step
1
Open the Diagnostics Menu. See “Accessing the Diagnostics Menu and
Maintenance Options” on page 3-6.
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