Strange new development.  I was playing around with hibernate and sleep, and 
after hibernating the computer then starting it back up, I once noticed it gave 
me a notice that the battery was fully charged!  So I pulled the plug, and now 
it is recognizing my battery!  
While plugged in I get this:

 cat /proc/acpi/battery/*/*
alarm:                   unsupported
present:                 yes
design capacity:         3700 mAh
last full capacity:      3700 mAh
battery technology:      rechargeable
design voltage:          12376 mV
design capacity warning: 300 mAh
design capacity low:     30 mAh
capacity granularity 1:  32 mAh
capacity granularity 2:  32 mAh
model number:            NS1P3SZNJSWR
serial number:           1160
battery type:            LION
OEM info:                SANYO
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            0 mA
remaining capacity:      3700 mAh
present voltage:         12375 mV


While unplugged I get this:

 cat /proc/acpi/battery/*/*
alarm:                   unsupported
present:                 yes
design capacity:         3700 mAh
last full capacity:      3700 mAh
battery technology:      rechargeable
design voltage:          12376 mV
design capacity warning: 300 mAh
design capacity low:     30 mAh
capacity granularity 1:  32 mAh
capacity granularity 2:  32 mAh
model number:            NS1P3SZNJSWR
serial number:           1160
battery type:            LION
OEM info:                SANYO
present:                 yes
capacity state:          ok
charging state:          discharging
present rate:            2792 mA
remaining capacity:      3674 mAh
present voltage:         12129 mV

Really quite odd.  It doesn't tell me how much battery I have time left,
but at least it does let me know what percentage of the battery I have.
When I go to System > Prefs > Power Managment, It still doesn't give me
a tab for 'On Battery'  not sure what all this means, but hope this
helps some.  The log file: /var/log/acpid doesn't give anything
different than the last time.

Shane

-- 
battery is not detected on laptop
https://bugs.launchpad.net/bugs/289873
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