How Much Electricity Does Your Smartphone Use Daily?

You are using your smartphone all the time. From communicating with someone, shopping and paying bills, to buying bus and train tickets, to watching movies, everything is possible with a smartphone. So it can be said that having a smartphone with you is a must. However, charging your smartphone is very important to keep it alive.

How many times do you charge your smartphone a day? Once or twice. Sometimes you have to charge your smartphone for the third time in a day. But do you know how much electricity is consumed by charging your smartphone once a day?

How much electricity it takes to charge a smartphone per day, and how much it costs, depends on a few factors. These factors are:

Smartphone battery capacity: Smartphone batteries typically range from 3,000 mAh to 5,000 mAh. The power required to charge a 4,000 mAh battery is typically 15-20 watt-hours (watt-hours).

Charger power: Smartphone chargers can usually be 10 watts to 30 watts or more. If there is fast charging technology, the power consumption may be a little higher. In addition, some of the electricity is converted into heat during the charging process. Usually, the power consumption is calculated assuming 85-90 percent efficiency. Usually, mobile phones are charged with a 5-volt charger. Then how much is the power consumption. That is, 150*5 watts per hour. Or 750 watts per hour or 0.75 kilowatts per hour or 0.75 units.

The cost of household electricity in Bangladesh is 7-10 taka per unit (this may vary according to the level of electricity). If the average cost per unit is 7 taka. Then 0.75 units × 7 taka = 5.25 taka. The electricity cost is very low if a smartphone is charged once a day. The monthly cost is between 5-6 taka, which is negligible compared to other daily expenses.