Hi, I have an HP Pavilion zv5000 for about 1 1/2 to 2 yrs. Lately, the battery just die suddenly. I can use the laptop if I connect it with AC power, but I just run a test, while the power meter show that the battery is charged to 100%, when I unplug the power cord and let it run on the battery power, the laptop shutdown without warning within 5 minutes. All along, I was checking the power meter, and the power meter actually show that the battery is 97% full at the time it shut down itself. I could only reboot the laptop with the AC power attach, and after rebooting, when I check the battery, it shows that there is only 3% left. it is even more puzzling than that: I tried to test how long the battery takes to charge up, and I see the battery slowly charged from 3 % to 4%, then 5% to 6%, at that point, the battery power meter suddenly report the battery is charged to 100%. Is this problem familiar to anyone? Is this solved if I replace my battery with a new one? or is it a bigger problem than battery (e.g. charger)? The battery is a Li-ion battery. Thanks.