User Guide

NPM-2NX
System Module CCS Technical Documentation
Page 20 ãNokia Corporation Issue 1 07/02
storage time. The voltage seen in the outer terminals is zero (or floating), and the battery
is activated by connecting the charger. Battery has internal protection for overvoltage
and overcurrent.
Figure 7: BLB-3 Battery contacts (BLB-2 has the same interface)
Technical information
Local mode is entered by inserting 560 Ohm resistors to these lines. In production fol-
lowing 1% resistors are needed in the case of BLB-3:
Normal/Calibration mode: BSI = 75k, BTEMP = 47k
Local mode: BSI = 560, BTEMP = 560
Test mode: BSI = 3.3k BTEMP = 560
Battery connector
NPM-2NX uses SMD type battery connector. This makes phone easier to assemble in pro-
duction and connection between battery and PWB is more reliable. Battery connector is
manufactured by Hirose.
Table 4: Battery connector interface
Accessories Interface
System connector
Introduction
NPM-2NX uses same accessories as Nokia 61XX and 51XX products via similar system
connector. NPM-2NX supports headsets HDC-9P, HDE-1P and loopset LPS-1P.
# Signal name Connected from - to Batt
I/O
Signal properties
A/--levels--freq./
timing
Description / Notes
1 VBAT (+) (batt.) VBAT I/O Vbat 3.0-5.1V Battery voltage
2 BSI BSI
(batt.)
UEM Out Ana. Battery size indicator
3 BTEMP BTEMP
(batt.)
UEM Out Ana. 40mA /
Switch
400mA
Battery temperature indica-
tor
4 GND GND GND Gnd Ground
1 (+)
2(BSI)
3(BTEMP)
4(GND)