My wife has a 13" white Macbook on its second battery that is about a year old. Just recently it developed a problem in that it won't run on the battery, even when it is supposedly 100% charged. In checking that out I note several wierd things: 1) The battery charge indicator on the battery only shows 1 light 2) I downloaded a program called Battery Health Monitor - the statistics it gives for the battery are: Original capacity 4400mAh Current capacity 65,189mAh (1482%) Current charge 100% (65,189mAh) Charge Cycles 27% (107) The only major change to the setup of the computer was that I replaced the keyboard/trackpad as the trackpad was malfunctioning. I purchased a replacement on eBay. Although the Macbook worked fine for a while with the new keyboard, could that possibly have any impact on this battery problem? Any suggestions or help will be most welcome.