Battery Bl-5C - Nokia RM-291 Service Manual

Nokia Customer Care
Signal From
BSI
BTEMP
* Note! In BL-5C battery IF the BTEMP signal doesn't exists. Temperature measurement is done on system
board with NTC resistor.

Battery BL-5C

• Type: BL-5C
• Technology: Li-Ion, 4.2 V charging, 3.1 V cut-off
• Capacity: 970 mAh.
The BSI resistor is placed on the main PWB as the telephone supports only one battery capacity. Further a
BSI connection is added to the Flash interface. The battery temperature is measured by a NTC resistor placed
on the main PWB, opposite to the Battery. Battery pack has an impedance of 130 - 150 mΩ (0 – 45 °C).
Page 8 –16
To Min
UEMCLite 0
UEMCLite 0
Figure 129 BL-5C battery connection order
Figure 130 BL-5C battery block
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
Nom Max Condi-tion
2.78
2.78
RM-291
System module
Note
Analog input, Battery Size
Indicator Resistor, 100
kohm pull up to 2.78V
(VBB1).
Btemp NTC Resistor, 100
kohm pull up to 2.78V
(VANA)
Issue 1