Question

Why using mobile which charging is harmful? Give a scientific reason.

Answer 1

Charging while using the phoneis in fact not recommended. Because while the phone is charging, whole power is used to charge the phone. That's why your phone gets charged within the usual time. Usually when the charging is complete, the phones firmware stops the charging process internally (at least in some phones). Also the phones battery comes loaded with a temperature monitor circuit which gives a feedback signal to the phone to stop/adjust charging current if the temperature increases beyond certain limits. But whenyou use it, power is drawn fromthe battery and as a result the battery heats up. Still the charger continues to charge it because the battery voltage is below the cutoff. As a result every time you use it when charging, the battery is not getting the full charging power -and it acts like the charger is what feeding the phone literally- so it keeps on chargingand also warms up the battery a lot more due to both chargingand discharging at the same time. If its a good quality battery, it signals back a temp feedback stopping the chargingprocess even if its still plugged in.

These are the reason why the charging time increases and you feel unusual warm.

In short, when you are using while charging the battery is undergoing high stress due to

+ discharging at a higher rate than charging.

+ insufficient charging voltage/current.

+ temperature of battery & phone (as a whole),

+ frequent cutoff etc...

Here I said only about the battery. But in reality, it affects the phone and charger as well.

So using the phone while charging is really really bad idea for your phone, charger & battery. The outcome can be from a bulged dead battery to a fried charging circuit at the worst.

Answer 2

batteries work in limited operating temp. range
(-10 to 50 degree. while charging the processor in the phone takes power from charger and battery will be charging this time.when u talk on ur phone while it's charging the heat generated by the processor and the battery both increases the temp. of battery to raise rapidly. if ithe temp. level increases 50 degrees then their are chances of explosion

thnk u

hope this helps u..!!