Here is a table of common electric voltages: Voltages Note: some of these voltages are standardized ratings for batteries and devices. Below 1.5 *electrical activity in a human body *lemon battery 1.5 AA/AAA/C/D battery 2 lead-acid battery (single cell) 3.3 computer microprocessor 3.7 lithium-ion battery (single cell) 4.5 5 USB], and other computer buses (though USB is often used as a power source without data transfer) 6 *Lantern battery *older automobile electrical systems *golf cart deep cycle battery 9 *PP3 battery 12 *Modern automobile electrical systems *Desktop computer power supplies **disk drives *garage door opener 13.5 note: this voltage is used with 12 volt systems *Automobile alternator 110 Domestic AC Residential/Commercial/light industrial electrical systems (North America) 220 AC residential/commercial/light industrial electrical systems (Europe) Beyond 1000 *Static electricity *Electric fences *CRT TV/computer monitor
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