"IOBatteryInfo" = ({"Capacity"=10000,"Amperage"=1200,"Current"=0,"Voltage"=0,"Flags"=83886 0931},{"Capacity"=366,"Amperage"=1200,"Current"=364,"Voltage"=12099,"Fla gs"=838860805})
Would anyone like to interpret this for me? Thanks. :)
On Feb 7, 2004, at 8:23 PM, Dan K wrote:
Your Mac guru is correct with respect to nimh and nicad batteries but
wrong when it comes to LiIon batteries which lose significant life every
time they're fully discharged. Every few weeks would is certainly
overkill. That said, it can be useful to occasionally calibrate LiIon
batteries.
The best advice I've seen for maximizing LiIon battery runtime, as posted
to usenet by "Peter" (whose last name escapes me at this moment):
------------------------------------------
(Peter's Trickle Calibration)
1. charge fully and then some
2. in terminal,
ioreg -p IODeviceTree -n battery -w0 | grep Bat
(make a note of your Capacity -- should be around 4000 or more)
sudo pmset -b spindown 1 sleep 0 reduce 1 dim 1
(prevents idle-sleep, and after 1 idle minute spins down your disk,
reduces your processor speed, and turns off the LCD when on battery)
(Maybe in Panther you can do that without pmset, but Jaguar is broken)
3. shut down all applications. turn off airport,
disconnect anything external -- keyborad, mouse, printers,
and finally, power.
4. LEAVE IT ALONE -- DO NOT TOUCH IT
5. W A I T (5 hours or more ...) 6. eventually your notebook will go to sleep
7. plug it in. wait 3 minutes. (mebbe 5 to be sure :-) 8. ioreg -p IODeviceTree -n battery -w0 | grep Bat (Has it re-evaluated your Capacity?) 9. leave it alone and let it charge fully. 10. if the Capacity changed significantly, you might want to repeat the calibration cycle. 11. Adjust your battery-power management settings to make it sleep at a more reasonable time.
Note -- *calibration* means helping the battery's firmware estimate the battery's capacity.
--markemmanuel ___________________t_h_e_w_o_l_f_p_u_p_._c_o_m_. Markemmanuel F. Rodriguez http://www.thewolfpup.com/ ________________________________________________________.
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