I have a 2008 (late) Macbook Pro with the removable battery. Now, with only 97 cycles on it, the battery shows 49% health. For some reason, the health sometimes is 90% when the computer has been plugged in for a while, and the MagSafe isgreen. When the computer is charging or running on battery, the health is usually 49%. Is there any way of correcting this, or is the battery completely ruined? Thanks. By the way, the battery menu in Snow Leopard tells me to Service Battery.