The old battery for my IBM/Lenovo ThinkPad T60p went from bad to useless this autumn but it wasn’t until yesterday that I ordered a new 9-cell battery (7.8 Ah) directly from IBM Sweden where the 9-cell battery actually was cheaper than a 6-cell battery (5.2Ah) . I first looked at well-stocked reseller Dustin but after discovering that either battery was cheaper at IBM, even including shipping costs, I simply ordered and smiled.
Update 2007-12-13 The battery arrived already today!
$ cat /proc/acpi/battery/BAT0/info present: yes design capacity: 84240 mWh last full capacity: 84240 mWh battery technology: rechargeable design voltage: 10800 mV design capacity warning: 4212 mWh design capacity low: 200 mWh capacity granularity 1: 1 mWh capacity granularity 2: 1 mWh model number: 92P1133 serial number: 1146 battery type: LION OEM info: Panasonic