get_battery_health.m

get_battery_health.m

#include <CoreFoundation/CoreFoundation.h>
#include <Foundation/NSObjCRuntime.h>
#include <IOKit/ps/IOPSKeys.h>
#include <IOKit/ps/IOPowerSources.h>
#include <assert.h>
int main() {
    CFTypeRef psInfo = IOPSCopyPowerSourcesInfo();
    assert(psInfo != NULL);
    CFArrayRef list = IOPSCopyPowerSourcesList(psInfo);
    assert(list != NULL);
    long count = CFArrayGetCount(list);
    for(long i = 0; i < count; i++) {
        CFDictionaryRef ps = IOPSGetPowerSourceDescription(psInfo, CFArrayGetValueAtIndex(list, i));
        assert(ps != NULL);

        CFStringRef deviceName = (CFStringRef)CFDictionaryGetValue(ps, CFSTR(kIOPSNameKey));
        assert(deviceName != NULL);

        CFStringRef serialNumber = (CFStringRef)CFDictionaryGetValue(ps, CFSTR(kIOPSHardwareSerialNumberKey));
        assert(serialNumber != NULL);

        CFStringRef health = (CFStringRef)CFDictionaryGetValue(ps, CFSTR(kIOPSBatteryHealthKey));
        assert(health != NULL);

        NSLog(@"Name=\"%@\" serialNumber=\"%@\" BatteryHealth=\"%@\"\n",
            (__bridge NSString *)deviceName,
            (__bridge NSString *)serialNumber,
            (__bridge NSString *)health);    
    }
    CFRelease(list);
    CFRelease(psInfo);
    return 0;
}