Specifications

TC35i AT Command Set
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TC35i_ATC_V01.05 Page 191 of 278 04.08.2003
7.6 AT^SBC Battery charge and charger control
This chapter is only applicable to TC35i, it is not intended for TC35i Terminal.
Responses returned by the AT^SBC command vary with the operating mode of the ME:
Normal mode: ME is switched on by Ignition pin and running the SLEEP, IDLE,
TALK or DATA mode. Charger is not connected. AT^SBC can be
used to query the battery capacity and the power consumption of ME
and application (if value of application was specified before as <cur-
rent>).
Normal mode + charging: Allows charging while ME is switched on by Ignition pin and running
the SLEEP, IDLE, TALK or DATA mode. AT^SBC returns charger
status and power consumption of ME / application. Battery capacity
is not available.
Charge-only mode: Allows charging while ME is detached from GSM network. When
started, the mode is indicated by the URC "^SYSSTART CHARGE-
ONLY MODE". AT^SBC returns charger status and power consump-
tion of ME / application. Percentage of battery capacity is not avail-
able. In Charge-only mode a limited number of AT commands is ac-
cessible (see Table 16). There are several ways to activate the
Charge-only mode:
a) from Power Down mode: Connect charger while ME was powered
down with AT^SMSO
b) from Normal mode: Connect charger, then enter AT^SMSO.
Alarm mode: No charging functionality, i.e. charging does not start even though
the charger is connected. Battery parameters are not available.
Charging begins once the charger is connected to the POWER pin of the external charging circuit.
See [1] for details on the charging control implemented in TC35i.
Test command
AT^SBC=?
Response
^SBC: (list of supported <bcs>s),(list of supported <bcl>s),<mpc> module power
consumption
Parameters
<bcs> Connection status of battery pack. See read command.
<bcl> Battery charge level. See read command.
<mpc> Average power consumption:
Value (0...5000) of average power consumption (mean value over a
couple of seconds) in mA. See read and write command for details.
Read command
AT^SBC?
Response
^SBC: <bcs>,<bcl>,<mpc>
<bcs> Connection status of charging adapter
0 No charging adapter is connected
1 Charging adapter is connected
2 Charging adapter is connected, charging in progress
3 Charging adapter is connected, charging has finished
4 Charging error, charging is interrupted
5 False charging temperature. Note that charging stops if the
temperature range specified for charging (0°C – 45°) is ex-
ceeded. In this case, the read command can be use to check
the temperature range.