Battery; Specification; Short Circuit Protection; Deep Discharge - Siemens SL 10 Service Manual

5Battery

5.1Specification

The SL10 battery is a Lithium-Ion type with a voltage of
3.6 Volts and a capacity of 550mAh.
The connections BATT+ and GND are used to supply the
mobile, while RCODE is used to detect the battery
technology. BATT_TEMP is used to measure the battery
temperature.
Charging the battery can be impossible, if the temperature of the battery cells is too high (e.g.
in car use during summer) or too low. This is to prevent the battery from being damaged
during fast charge process. To enable the charging process again, the battery only needs to
cool down/warm up. A replacement of battery is not necessary.

5.2Short Circuit Protection

The battery is short-circuit protected by an electronic fuse.
The resetting of the fuse can be done by the following procedures:
H  Plug the battery into the desktop charger.
or
Apply +5 Volts between the BATT+ and GND contacts (see drawing!)
ˆ 
Caution! Limit the current to 10mA.

5.3Deep Discharge

If the battery is deeply discharged it can be recharged by the following procedure:
• Insert flat battery into handset and connect travel charger. The charging symbol
will not be visible. Wait for appr. 1 hour and disconnect charger afterwards.
• Remove battery and reinsert it. If you connect the travel charger now, the charging
symbol must be visible on the handset display.
Service Manual SL10
Sm_sl10_lvl2_v11.doc
Private Communication Systems
V1.1
Page 19 of 23
Mobile Phones
BATT+
RCODE
BATT_TEMP
GND
PN MP ST
R. Fleuren
05/98