When I was using os 9.1, I can use my pbG4 with battery for more than 3 hrs ppt presentation. But I can't use more than 2 hours now under X 10.1.2 為什麼它這麼沒擋頭啊....
解決方法如下, 每次把電池用到被強迫 sleep, 不管 warning, then we can recover the battery a little per time. After several time, I can use my battery for 5 hours under OS X (不過只開機不作事)
