Nokia 2760 - Battery Connector; Battery Interface

Signal From To Min Nom Max Condi-tion Note
VCHARIN Charger UEMC
Lite
11.1Vp
eak
16.9
Vpeak
Standard Vch from Charger
Connector, max 20V
7.9
VRMS
1.0
Apeak
7.0
VRMS
8.4
VRMS
9.2
VRMS
Fast charger
850 mA
GND GND GND from/to Charger
connector
Battery connector
Table 14 Battery IF
Signal From To Min Nom Max Note
GND Global Batt (-) Global GND
VBAT Batt (+) 3.1 5.1 Battery Voltage
BSI UEMCLite 0 2.78 Analog input, Battery Size
Indicator Resistor, 100
kohm pull up to 2.78V
(VBB1). FDL Init, refer to
flash download.
Battery interface
• Type: BL-4B
• Technology: Li-Ion, 4.2 V charging, 3.1 V cut-off
• Capacity: 700 mAh.
BL-4B has a 3 pin interface with overcharge / discharge protection (safety circuit) and battery size indication
BSI with an internal resistor. The BSI fixed resistor value indicates type and default capacity of a battery.
Figure 115 BL-4B battery pack contacts
Table 15 Pin numbering of battery pack
Signal name Pin number Function
GND 2 Negative/common battery
terminal
RM-258; RM-259
System Module
Issue 1 COMPANY CONFIDENTIAL Page 6 –19
Copyright © 2007 Nokia. All rights reserved.