Quote:
Originally Posted by bones007
2- Your power meter measures the Volts*Amps not the watts. If the power factor of the charger is only 0.6 than 40% of the electricity you are paying for is not going into your batteries.
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Are you sure? I live in Sweden, our power meters measures both active and reactive power, households only pay for the active power, companies pay for active power and a _small_ amount for the reactive power as well.
And what do you actually mean by Volts*Amps? If you measure it continuous then you will only measure the active power. If you measure the rms of current and voltage and then multiply it you will have the apparent power.
see
AC power - Wikipedia, the free encyclopedia