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LED Indication:
The status of the battery is indicated by the LEDs visible in the status window:
Green flashing:
Green solid: Battery fully charged
Blue flashing:
Blue solid:
Red flashing: Battery fuel gauge in need of recalibration
Red solid:
Recharge Time
The ND2054 battery requires up to 3.5 hours to recharge a fully depleted battery.
Recalibration Time
Recalibration consists of a calibration charge, followed by a calibration discharge. Finally
the battery is given a regular charge. A calibration cycle will be faster if the battery is fully
charged to begin with. Recalibration time is governed by the battery voltage and
capacity. Larger batteries will take longer to recalibrate. Calibration is initiated each time
the button is pressed, so it is not recommended to press the recalibration button part
way through the recalibration cycle.
What are the SMBus and the SBS?
The Smart Battery System defines the parameters that are stored by an SBS-compliant
battery. These parameters include full battery status and fuel gauging information. The
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.
®
LIT-212 CUDA
(English)
Battery charging
Battery in calibration mode
Battery fuel gauge calibrated
Error
Rev. -
Date of Revision:01/20/16
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