About the current charge (since I can't post there, I don't have LJ):
instead of bugging users, the manager could simply do what it did before
it had the new "profiling" features. (Or, it could initialize the
profile with the "old" one, instead of blank data.) It will then be at
least as good as the old one, and it will get better while learning.
(Now it can be better, but it's worse than the old one the first few
charge cycles.)

About the battery max capacity, this is really weird. I took a look at
that /proc file, it looks quite strange (see below). The last/current
charge is given as more than ten times the design capacity. I think it's
probably an over-enthusiastic extrapolation (the voltage is higher than
designed, and I think there's an exponential there in the calculation).
Anyway, the warning is still weird. It should warn me I have too much
battery capacity, not too little... (By the way, I notice it has some
"by design" numbers for low/warning levels, they should be used to
initialize the model.)

$ cat /proc/acpi/battery/BAT0/info 
present:                 yes
design capacity:         5200 mAh
last full capacity:      63718 mAh
battery technology:      rechargeable
design voltage:          11100 mV
design capacity warning: 520 mAh
design capacity low:     157 mAh
capacity granularity 1:  52 mAh
capacity granularity 2:  52 mAh
model number:            DELL PC7646
serial number:           1660
battery type:            LION
OEM info:                Samsung SDI

$ cat /proc/acpi/battery/BAT0/state 
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            1 mA
remaining capacity:      63718 mAh
present voltage:         12352 mV

-- 
power manager insists batter is broken
https://bugs.launchpad.net/bugs/119318
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