Well, "Calibration needed: 1" means something

BTW, even having "Calibration needed: 0" doesn't mean You don't need calibration, if You've changed battery recently or so. N900's hardware doesn't have any way to fingerprint battery, so if You switch from standard BL-5J to, lets say, dual-scud, You still need to calibrate before seeing Your 3000 mAh.

Generally, "Calibration needed" is derived form amount of cycles since last calibration. If chip was reset, calibration is "never" so induct "Calibration needed".

/Estel