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Discontinuities in charge profile
So, I used X-Charge to follow the charge profile of the battery in my GHz TiBook through a complete discharge and recharge cycle (nice little program, BTW). During the discharge cycle, my battery declined consistently until it got to about 15%, and then without warning, it plunked immediately down to 0%, forcing the PowerBook to sleep. I then plugged in, and the battery charged reasonably quickly to about 80%, at which point the rate of charge started to slow. It climbed quite slowly to about 86%, and then jumped immediately to 100% and (obviously) stopped charging.
Discontinuities in charge profile
LiIon batteries have a built in circuit that limits overcharging and run-down. Overcharging can cause the battery to overheat (i.e. catch fire) as well as damaging it. Running it down too far also can cause charging problems. Maybe what you are seeing is caused by the protection circuit. |
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