Cuda surgical LIT-171 Mode D'emploi page 7

System Management Bus is the language by which these parameters are
communicated between the battery, the charger and the host device.
How does the charger know what charge to deliver?
The CH5000 charger is capable of sensing and delivering an appropriate charge.
Upon inserting the battery into the charger, the battery communicates to the charger
over the SMBus telling the charger what type of cell chemistry it is and what type of
charge regime it needs. The CH5000 then configures its output to provide the charge
regime requested by the battery. If no SMBus communications are issued from the
battery, the charger interrogates the thermistor/resistor I.D. pin on the battery terminal
and delivers an appropriate charge.
FUEL GAUGE AND RECALIBRATION:
"Real-Life" applications rarely fully discharge a battery pack. Frequent partial discharges
are not a problem to your smart battery, however after repeated use in this way, the
accuracy of the fuel gauge may be reduced.
The smart battery has a built-in monitoring system which checks the accuracy of the fuel
gauge, based on the discharge history of the battery. This history is broadcast over the
SMBus and can be used by the host device to inform the user when to recalibrate the
electronic fuel gauge.
Recalibration of the electronics is achieved by fully recharging the battery followed by a
full discharge. Depending on the storage history of the battery pack, the smart battery
may require calibration when brand new.
The LCD Fuel Gauge is located at the same end of the battery as the pull tab.
The LCD fuel gauge employs a 'five' segment LCD. Each segment represents
approximately 20% of the batteries remaining capacity. In the case of the LED-8000
series headlights each segment of a fully charged battery represents approximately 30
minutes of run time.
If fuel gauge recalibration is needed, the red LED on a calibrating charger will
flash upon insertion of the battery. This provides feedback on the accuracy of the
fuel gauge and avoids unnecessary calibration cycles.
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LIT-171 CUDA SURGICAL
(English)
Rev. D
Date of Revision:3/28/13
Page 7 of 49