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/proc/acpi/battery/

比如 info 文件内容

present:                 yes
design capacity:         4400 mAh
last full capacity:      4191 mAh
battery technology:      rechargeable
design voltage:          10800 mV
design capacity warning: 205 mAh
design capacity low:     143 mAh
capacity granularity 1:  62 mAh
capacity granularity 2:  3986 mAh
model number:            Primary
serial number:          
battery type:            LION
OEM info:                Hewlett-Packard