16: Maintenance Battery Maintenance
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Battery Maintenance
Battery maintenance is essential to ensure that the battery’s charge state is accurately reported, there
is sufficient charge and capacity to operate your Efficia DFM100, and battery life is optimized.
Remove faulty batteries from service immediately. Battery maintenance begins when you first receive
your device and continues throughout the life of the battery. To optimize performance, a battery that
is in the low battery condition (less than 40%) should be charged as soon as possible. Tabl e 4 7 lists
battery maintenance activities and when they should be performed.
When properly cared for and used in its intended environment, the Efficia DFM100 Lithium Ion
battery has an approximate useful service life of 3 years in low use environments (5-10 hours per
week) and 1.5 years in high use environments (25-30 hours per week). Use outside intended
conditions could reduce battery life. To optimize performance, charge a low battery as soon as
possible.
NOTE: The Efficia DFM100 rechargeable Lithium Ion battery automatically calibrates itself.
Initializing Batteries
When opening a new battery for the first time, it needs to first be charged before the fuel gauge
lights activate.
Charging Batteries
The Efficia DFM100 Lithium Ion battery needs to be charged in the Efficia DFM100. Insert the
battery to be charged in the battery compartment and then plug the device into an AC power outlet.
With AC power connected and the device turned off, the Efficia DFM100 recharges its battery to
80% capacity in less than 2 hours and to 100% capacity in less than 3 hours. Charge time can be
substantially longer if the device is on.
Once AC power is supplied, the Battery Charging Indicator flashes green to indicate the battery is
charging and the battery is ≤ 90 percent charged. The indicator turns solid green when the battery
charge is > 90 percent of capacity and AC power is present. If no battery is installed or the installed
battery is not functioning properly, the light remains off. Charging the battery at temperatures above
40°C (104°F) may reduce battery life.
Charge Status
You can check the current charge status of a Efficia DFM100 Lithium Ion battery by:
• Pushing the fuel gauge button on the battery to illuminate the fuel gauge (see “Battery Fuel
Gauge” on page 15).
• Turning the Therapy knob to any position and observing the battery power indicators displayed
in the Status Area (see “Status Area” on page 30).
Table 47 Battery Maintenance Activities
Activity When to perform
Visual inspection As part of a standard Operational Check.
Charge the battery Upon receipt; after use; if the
message is displayed.
Store the battery When not in use for an extended period of time, store the battery at a
20-40% charge.
Discard the battery When there are visual signs of damage or you receive a message to replace
the battery.
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