how much electricity does phone charger use?
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Cell phones, mobile phones, even smart phones and tablets are very energy efficient because they are designed to run on a battery for a long period of time. Cell Phones use approximately 2 to 6 watts when charging, while a charger left plugged in without a phone will consume 0.1 to 0.5 of a watt.
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The iPhone 6 comes with its own 5 watt charger. You can use that or an iPad charger with 10 or 12 watts.
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Apparently even new chargers consume a bit of electricity when they are plugged in - but it amounts to just a few pence a year. The amount they use while not attached to the appliance is limited by EU regulations to no more than 0.5 watts.
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Many Appliances Use Just as Much Power When Off Always leaving a laptop computer plugged in, even when it's fully charged, can use a similar quantity — 4.5 kilowatt-hours of electricity in a week, or about 235 kilowatt-hours a year.
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The cost of electricity varies greatly by location in the United States. The average cost is $0.12 per Kilowatt hour. You will then multiply the three (power consumption, operating hours, cost of electricity) together to calculate total cost per month.
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In fact, the majority of mobile devices, tablets and laptops have battery chargers that can work on 220 volts used in Europe and countries in the world, as well as 110 volts (the US). Cell phone chargers can work with different frequencies from 50 Hertz to 60 Hertz.
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“If electricity costs $0.11 per kWh and the vehicle consumes 34 kWh to travel 100 miles, the cost per mile is about $0.04. If electricity costs $0.11 per kilowatt-hour, charging an all-electric vehicle with a 70-mile range (assuming a fully depleted 24 kWh battery) will cost about $2.64 to reach a full charge.
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Apple's official spec shows that the iPhone XS, iPhone XS Max and iPhone XR all support fast charging, which allows the phone to charge 50% in 30 minutes. Compared to old 5W chargers, fast charging USB PD charges 3 times as much in 30 minutes.
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16121 per KWh (including all fees). That means that it would cost me about $2.58 to charge the 16KWh battery with 100% efficiency.
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According to the Energy Saving Trust, any switched on charger that is plugged in will still use electricity, regardless of whether the device is attached or not. The amount of electricity produced from this only costs a few pence, but it will shorten the shelf life of the charger.
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How much electricity does a laptop use per hour in the UK? A laptop typically uses about 50 watts of electricity, the equivalent of 0.05 kWh. This means that if a laptop is on for eight hours a day, it will cost 5p a day to run the laptop (based on an average energy unit cost of 12.5 p/kWh).
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An electricity retailer may charge a consumer 100 cents/day and 22c/kWh of electricity consumed. This would cost an 8,000 kWh per annum customer: $2125 per annum — that is, ((100x365)+(22x8000))/100, or. 26.6 c/kWh — that is, (2125/8000)x100.
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According to the EIA, in 2017, the average annual electricity consumption for a U.S. residential home customer was 10,399 kilowatt hours (kWh), an average of 867 kWh per month. That means the average household electricity consumption kWh per day is 28.9 kWh (867 kWh / 30 days).
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Battery requires direct current (DC) for charging. Mobile phone charger use switched mode power supply (SMPS) to convert AC supply of 120/24,50/60Hz to into DC supply such as 5V, 1.6A. In SMPS, input voltage from AC mains is directly rectified and filtered using a capacitor.
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A watt equals a joule per second. If a smart phone uses five joules of energy every second, then the power of the phone is five joules per second, or five watts. The animation above demonstrates the difference between energy and power.
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According to the Charger Tariff Calculator, it costs the average smartphone user only 0.3p to charge their device, resulting in less than half a pence per charge. That means if you keep your smartphone's battery charged up every day of the week, it will cost you a total of £1.09 for the full year.
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Standard chargers that come with iPhones and older Android phones carry 1 amp of current and put out 5 watts of power. New rapid chargers with technology such as Quick Charge support 2 amps and 12 watts or more, potentially charging your phone up to four times faster.