Is living without cell phones and tablets really possible? But above all, have we ever wondered how much electricity they consume by subjecting them to periodic recharges? The answer may surprise us.
Cell phones, cell phones, even smartphones and tablets they are very energy efficient because they are designed to run on battery for a long time.
Cell phones use approximately 2 to 6 watts when charging, while a charger left plugged in, no phone, will consume 0.1 to 0.5 watts.
Charging an iPhone or Android phone under normal conditions of use it will generally cost, as electricity consumption, by itself, just over one euro of electricity for a whole year, if of course used in moderation (approximately 1 hour a day of recharge). That is, we are referring to the need to have a mobile phone completely downloaded first and then to subject it to recharging.
How much does it really cost to recharge a mobile phone?
Naturally if we use a cell phone from 12 to 18 hours a day (shall we go to sleep sooner or later?), it will end with lo download faster. And particularly this will happen if we are always connected to the network: then the consumption could reach up to 3 euros per year, but we are really at the limit. Charging a mobile phone is not a very significant source of energy consumption. But to get to all this you should keep perpetually your mobile on charge risking breaking it.
As already mentioned, unplug the phone charger it can save some energy, but even if you’ve left a charger plugged in without a device that draws half a watt 24/7 for a whole year, it will only cost you 50 euro cents a year more. Suppose instead of charge the device for 2 hours every other day. This means that in a year you will spend 365 hours recharging your device. At 6 watts, that’s 2190 watt hours, or 2.19 kilowatt hours (kWh). If your utility company charges 12 cents per kWh (rough average in Europe), that means it’s costing you just under a euro a year to keep your device charged.
During an overnight charge, an I-phone consumes an average of 19.2 Wh. According to data published by U.S. Energy Information Administration for July 2021 (the latest data currently available), the average cost per kWh in the US was $0.13. Remember that 1 kWh equals 1,000 Wh.
So, take the average of 19.2Wh per day, multiply it by 365 days, we get 7kWh, which equals $0.91 a year. So finally the reports back it up: less than a dollar. We are therefore faced with certainly not excessive consumption. There is much worse, however, when we recharge a cell phone all night.
It is certainly not the excessive charging of our mobile a compromising our electricity bill. But having answered specific and delicate questions certainly makes everything clearer.
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