Most of us charge our mobile phone at night. While a full recharge takes a few hours at most, the phone often stays connected for eight hours or more! However, smartphones are equipped with a lithium-ion battery, which has the advantage of recharging quickly, but gets damaged when subjected to very high voltages. Additionally, overcharging can cause the battery to heat up and in some cases cause it to catch fire, as we saw with the Galaxy Note 7 that caught fire.
To avoid this phenomenon, most.
manufacturers have equipped phones with systems that automatically cut off the current when charging is complete. The problem is that even when not in use, the phone experiences low discharge. Once the battery drops below a certain level, it will recharge again until it reaches 100%, and so on several times during the night. Too many “micro charges” that consume the battery prematurely and cause the phone to overheat.
The charger alone also consumes electricity
Moreover, the phone is not the only one that consumes power. When the battery is 100% charged and the charger remains connected, the charger continues to absorb electricity. According to Berkeley Lab, the charger presents an average power of 3.68 watts when charged and 2.24 watts when kept plugged in while the battery is full. Useless waste of energy.
To increase battery life, it is always recommended to keep the charge percentage between 30% and 80%, that is, do not wait until it is completely empty or charge it to the maximum.
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