18 year old laptop - Dell Inspiron 8600. Is it retro already? 1680x1050 screen (with 1920x1200 option!), Pentium M, Radeon 9600 128MB. Pretty high end for the time. : r/retrobattlestations
DELL Inspiron 8600 Battery - Laptop Batteries
Dell Inspiron 8500 Inspiron 8600 Latitude D800 Pre Replacement Battery: BatteryClerk.com