Charging Operation; Battery; Charging Circuitry - Nokia 6088 Baseband Description And Troubleshooting

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Charging Operation

Thumper uses a Lithium-Ion cell battery with a capacity of 820 mAh. Inside the

battery, there is a resistor connected between BSI pin and GND pin for battery ID,

MSM reads the BSI pin (via VBATT_ID signal in schematic) to identify the battery

size. Different charging algorithms will be used for different battery sizes.

The PM6610 IC charge control is dependent on the charger type and the battery size.

External components are needed for electromagnetic compatibility (EMC), and

transient protection of the input to the baseband module. The charger's DC input is

through the dc-jack connector. This mobile terminal supports AC-3, AC-4, DC-4,

AC-5, ACP-12 and AC-1 chargers.

Issue 1 10/2006

Figure 12: BL-4C battery pack pin order

Figure 12: Charging Circuitry

Baseband Description and Troubleshooting

Company Confidential

6088 (RM218)

Page 17

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