Most of us charge our smartphones overnight while dreams of super special phones dance in our heads. But it usually takes just 2 hours to fully power up the battery on our phones. So what are the costs financially if we leave our phones plugged past (after) those two hours while we sleep? And what is the cost of leaving the charger plugged into the wall even if the phone isn’t attached to it? Read on to find out!
According to a new study, if you unplug your charger from the wall when not in use, over a year you will save the same amount of energy it takes to run a hot bath. In other words, you are not consuming much electricity by leaving the charger in the wall. As Professor MacKay puts it, “Obsessively (repeatedly) switching off (turning off; removing) the phone charger is like bailing (taking water out of) the Titanic with a teaspoon.
A study that dates back to (that was done in) 2012 revealed (showed) that a charger plugged into the wall used an average of 0.26 watt. When a phone was connected to the charger, the average amount of electricity used rose to 3.68 watt. Once the phone is fully charged, that figure dropped down (reduced) to 2.24 watt. For the average household, the study showed an average cost of $5.30 to charge a smartphone on an annual basis.
However, it is no good for your phone’s battery to keep charging for long periods of time after it hits (is; shows) “100% charged”. This can lead your phone to require a new battery earlier than it would normally need one. Lithium ion batteries, like the ones used by most smartphones, should not be kept at 100% for long periods of time. Experts say that for optimal (the best) battery life, you should run your battery for a short period of time, and then plug it in for a short time.
Discuss the pros and cons (advantages and disadvantages) of leaving or not leaving the charger in the wall. Give your personal experience on the topic. (20 lines)
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