ever since when I upgrade to Panther, my powerbook 12" rev.A never able to charge the battery to 100% always stop at 99% strange thing is, sometimes the battery does not get charge at 94% as well... anything believe there is problem with my battery or my power managment...
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Upgrade to Panther but always 99%
- Thread starter SLJ
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I'm pretty sure it's just a rounding/truncating error in the routine that calculates the percentage shown. In Jaguar, 99.5% and above was rounded UP to 100%. In Panther, the decimal portion is truncated. So even 99.999% will still show 99%.
I wrote a little perl script to show the battery charge from the command line. It always agreed with the percentage shown in Jaguar, and it's now often 1% higher than what's shown in Panther.
I wrote a little perl script to show the battery charge from the command line. It always agreed with the percentage shown in Jaguar, and it's now often 1% higher than what's shown in Panther.
Code:
#!/usr/bin/perl
if (open(BATT, "/usr/sbin/ioreg -p IODeviceTree -n battery -w 0|")) {
while (<BATT>) {
if (/Battery.*"Capacity"=(\d+),.*"Current"=(\d+)/) {
$cur = $2 + 0.0;
$cap = $1 + 0.0;
$pct = int(($cur * 100.0 / $cap) + 0.5);
print "$pct%\n";
}
}
close(BATT);
}