Battery And Charging - Nokia RM-164 Service Manual

RM-164
System module
• Energy management control
• Supply voltage generation
• Charge control
• Digital core supply
• Current control for LED supply
Retu
The blocks that do not have special needs are included in Retu.
Retu controls for example:
• Audio block
• SIM
• FM radio
Modes of operation
The functional behavior can be divided into seven different states. Each of these states will affect the general
functionality of the phone:
• No supply
• Backup
• Power off
• Reset
• Power on
• Deep sleep

Battery and charging

Battery
• Type: BP-5M, Li-Polymer
• Capacity: 900 mAh
• BSI resistor nominal value: 75 kΩ
Battery temperature is measured on the NTC on the main board.
Figure 25 Battery BP-5M
Issue 1 COMPANY CONFIDENTIAL Page 5 –11
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