frameworks/base/core/res/res/xml/power_profile.xml
修改文件
<!-- Current when CPU is awake -->
<item name="cpu.awake">1.6</item>
<!-- Current when CPU is idle -->
<item name="cpu.idle">1.6</item>
<!-- This is the battery capacity in mAh (measured at nominal voltage) -->
<item name="battery.capacity">2000</item>