> I thought they might measure it fairly accurately in order to calculate > time remaining on the battery.
Usually the time remaining on battery is either based on the battery voltage (cheap) or by counting coulombs (expensive). Both are measured on the *input* of the inverter. In retrospect, output load is usually determined by multiplying the output voltage and -current. Only high end devices will do this by integrating this over time (which makes it possible to calculate both apparent and active power), while most will just bluntly multiply the average output current and configured voltage (apparent power only). Best regards, Arjen -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57 _______________________________________________ Nut-upsdev mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/nut-upsdev
