今天收到国美寄来的E430，进行充电，充到27.6%就再也充不进去了，linux系统的

尊敬的用户您好：此现象为Thinkpad在linux(ubuntu)的电池充电阈值问题，与笔记本电脑无关。下面处理方法仅供参考，建议您使用windows系统。

安装tp-smapi:

# aptitude install tp-smapi-dkms

# modprobe tp_smapi

更改充电阈值：

设置开始充电阈值，如从“60%”开始充电：

# echo 60 >/sys/devices/platform/smapi/BAT0/start_charge_thresh

设置停止充电阈值，如到“100%”停止充电：

# echo 100 >/sys/devices/platform/smapi/BAT0/stop_charge_thresh

查看充电阈值：

# cat /sys/devices/platform/smapi/BAT0/*_charge_thresh

其他：

To prevent charging for 17 minutes (regardless of thresholds):

# echo 17 >/sys/devices/platform/smapi/BAT0/inhibit_charge_minutes

To cancel charging preventation:

# echo 0 >/sys/devices/platform/smapi/BAT0/inhibit_charge_minutes

To force battery discharging (even if connected to AC):

# echo 1 >/sys/devices/platform/smapi/BAT0/force_discharge

To cancel forced discharge:

# echo 0 >/sys/devices/platform/smapi/BAT0/force_discharge

让设置在启动时生效（只用同一块电池）：

It is not necessary to create your own init.d script or modify /etc/rc.local - you just need the package sysfsutils:

# apt-get install sysfsutils

# sudo gedit /etc/sysfs.conf

把下面的放在文件 /etc/sysfs.conf后面:

# cat >>/etc/sysfs.conf <<EOF

# For a LiIon battery in a Thinkpad

devices/platform/smapi/BAT0/start_charge_thresh = 50

devices/platform/smapi/BAT0/stop_charge_thresh = 80

EOF

The init script supplied by sysfsutils will load these settings on each boot.

其他电池状态信息：

To view extended battery status such as charging state, voltage, current, capacity, cycle count and model information:

# cat /sys/devices/platform/smapi/BAT0/installed

# cat /sys/devices/platform/smapi/BAT0/state # idle/charging/discharging

# cat /sys/devices/platform/smapi/BAT0/cycle_count

# cat /sys/devices/platform/smapi/BAT0/current_now # instantaneous current

# cat /sys/devices/platform/smapi/BAT0/current_avg # last minute average

# cat /sys/devices/platform/smapi/BAT0/power_now # instantaneous power

# cat /sys/devices/platform/smapi/BAT0/power_avg # last minute average

# cat /sys/devices/platform/smapi/BAT0/last_full_capacity

# cat /sys/devices/platform/smapi/BAT0/remaining_percent

# cat /sys/devices/platform/smapi/BAT0/remaining_running_time

# cat /sys/devices/platform/smapi/BAT0/remaining_charging_time

# cat /sys/devices/platform/smapi/BAT0/remaining_capacity

# cat /sys/devices/platform/smapi/BAT0/design_capacity

# cat /sys/devices/platform/smapi/BAT0/voltage

# cat /sys/devices/platform/smapi/BAT0/design_voltage

# cat /sys/devices/platform/smapi/BAT0/manufacturer

# cat /sys/devices/platform/smapi/BAT0/model

# cat /sys/devices/platform/smapi/BAT0/barcoding

# cat /sys/devices/platform/smapi/BAT0/chemistry

# cat /sys/devices/platform/smapi/BAT0/serial

# cat /sys/devices/platform/smapi/BAT0/manufacture_date

# cat /sys/devices/platform/smapi/BAT0/first_use_date

# cat /sys/devices/platform/smapi/BAT0/temperature # in milli-Celsius

# cat /sys/devices/platform/smapi/ac_connected

The raw status data is also available, including some fields not listed above (in case you can figure them out):

# cat /sys/devices/platform/smapi/BAT0/dump

这个问题我解决过哦。

用P/Invoke调 API：kernel32.dll中的GetSystemPowerStatus函数。函数返回系统的电源状态。状态指数系统是在直流电源还是交流电源下运作，电池是否在充电，电池的剩余电量。

先定义结构体：

[StructLayout(LayoutKind.Sequential)]

public struct SYSTEM_POWER_STATUS

{

public byte ACLineStatus

public byte BatteryFlag

public byte BatteryLifePercent

public byte Reserved1

public int BatteryLifeTime

public int BatteryFullLifeTime

}

然后导入外部函数：

[DllImport("kernel32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]

public static extern bool GetSystemPowerStatus(ref SYSTEM_POWER_STATUS systemPowerStatus)

如果调用成功，返回 true，然后分析systemPowerStatus的数据就行。

ACLineStatus为1时，表示正在使用交流电源，为0使用直流电源。

希望能够帮到你。

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