how many kwh does it take to charge a phone?
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Far from anything worth being sheepish over, 1 kwh costs about 12 cents. To be specific, your iPhone battery holds a charge of 1,440 mAh, or about 5.45 watt hours. If you fully drained and recharged your phone everyday, then over the course of a year you would have to feed it about 2,000 watt hours, or 2kWh.
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How much electricity does a 1 kW solar panel system produce? A 1 kW system of solar panels can generate around 850 kWh of electricity each year.
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For home charging your electricity bill will show this cost – on average it will be between 10-14 pence. To fill up, if you look at petrol being 128p per litre, electricity will be between 10-14 pence per kWh.
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Usually, if the phone is plugged and charging while on, it should take between 3 to 4 hours to fully charge.
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During an overnight charge, the iPhone consumed an average of 19.2 Wh. According to figures published by the US Energy Information Administration for July 2018 (the latest figures currently avaialble), the average cost per kWh in the US was $0.13. Remember that 1 kWh equals 1,000 Wh.
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However, electricity on your bill is measured in kilowatt-hours (kWh), not watt-hours. One kilowatt is equal to 1000 watts, so to calculate how many kWh a device uses, divide the watt-hours from the previous step by 1000.
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For electric vehicles, this requires about 10 kWh of electricity (Most EVs average between 3 & 4 miles per kWh. Charging an EV at 40 A (9.6 kW) means it will take a little more than one hour to charge to the minimum required daily amount, compared to 1 hour and 20 minutes at 30 A (7.2 kW).
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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.
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Cost to charge an electric car at home Most drivers will charge their electric car overnight, waking up to a full battery every morning. Average domestic electricity rate is about 14p per kWh. Fully charging a 60kWh electric car will cost about £8.40 and give you about 200 miles of range.
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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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Our residential usage charge is a two-tiered Conservation Rate. You pay 8.29 cents per kWh for the first 1,350 kWh you use over an average two-month billing period. Above that amount, you pay 12.43 cents per kWh — what we call Step 2 — for the balance of the electricity used during the billing period.
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Using seven 300W solar panels will produce roughly 3,000 kilowatts hours (kWh) of electricity, which is significantly below how much electricity a standard single-family household uses.
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For example, the average price for electricity per kilo Watt hour in Australia is about $0.25 and it takes approximately 18 kWh to travel 100kms, so it will cost approximately $4.50 in electricity charges to travel 100kms.
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Charging at public charging outlets The rate of charge is usually from 25 kW to 135 kW and can recharge an EV battery in around 30 minutes1. Check with the car manufacturer for the EV's charging options before you buy.
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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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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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The average price people in the U.S. pay for electricity is about 12 cents per kilowatt-hour. (Context: A typical U.S. household uses about 908 kWh a month of electricity.)