Use Your Bike as a Backup to Your Backup Power Supply

Re:Use Your Bike as a Backup to Your Backup Power Supply by numpad0 on Monday October 26, 2020 @12:04AM (#24892732)

Watt(energy) = Volts(voltage) * Ampere(current)

e.g. USB phone charger rated for 5V/2A = 10W, laptop adapter for 19V/65A = 1.2kW, electric heater rated 110V/15A = 1650W

Voltage and current are like height and width of a 2D box named wattage or energy, and you can stretch or shrink the height thus changing width, but not the total area

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Re:Use Your Bike as a Backup to Your Backup Power Supply by Faaak on Monday October 26, 2020 @03:36AM (#24893656)

Now way a laptop uses 1200W. More like 6.5A -> 120W

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Re:Use Your Bike as a Backup to Your Backup Power Supply by samoa42 on Monday October 26, 2020 @04:30AM (#24893926)

yea, mobile devices are limited by the ammount of thermal energy they can dissipate. most laptop cooling systems top out at around 30W, anything more is peak load or charging.

my i7-6600u idles at around 3W

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