Specifications

TC35i AT Command Set
Confidential / Released
TC35i_ATC_V01.05 Page 192 of 278 04.08.2003
<bcl> Battery charge level
0, 20, 40, 60, 80, 100 percent of remaining capacity (6 steps)
0 indicates that either the battery is exhausted or the capacity value
is not available
While charging is in progress (charging adapter connected) no
battery capacity value is available. Consequently, parameter
<bcl>=0. To query the battery capacity disconnect the charger.
<mpc> Average power consumption
<mpc> is obtained from the ME's power consumption, plus the value
you have specified for the application by using the write command
AT^SBC=<current>. Remember that the ME's power consumption
varies with its operating mode (IDLE, TALK, DATA) and the power
level.
If <current> was not yet specified and no battery pack NTC is
detected <mpc> returns only the module's present power
consumption.
If <current> was not yet specified, but the NTC of the connected
battery pack is detected, an offset value of 200mA will, by default, be
added to <mpc>. 200mA is an estimated value which represents the
power consumption of a typical external application. Drawn from
practical experience it serves as a precaution to ensure proper
charging in case you have not entered <current>. It is strongly
recommended that you enter the correct power consumption of your
application as described below.
Note: If the battery does not incorporate an NTC, or the battery and
the NTC are not compliant with the requirements specified in [1], the
battery cannot be detected by the ME.
Write command
AT^SBC=
<current>
Use the write command to specify the power consumption of your external appli-
cation. This information enables the ME to calculate the average power consump-
tion <mpc> and to properly control the charging process. If the value is not correct
the entire charging process may be affected. Resulting problems may be wrong
responses to the AT^SBC read command, overcharging, or the battery does not
reach full capacity.
When the ME is powered down or reset, the value of <current> is restored to its
default.
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<current> Enter the current consumption of your application in mA (0...5000). If
used, the current provided over the by 2.9V VDD pin of the applica-
tion interface (maximum 10mA) must be added, too.