HOW MUCH VOLTAGE DROP WILL OCCUR ACROSS EXTERNAL BATTERY WHEN CHARGING A MOBILE PHONE

HOW MUCH VOLTAGE DROP WILL OCCUR ACROSS EXTERNAL BATTERY WHEN CHARGING A MOBILE PHONE

 Disclaimer.We are not affiliate with cell phone companies like Nokia,Samsung,Sony Ericsson,Lg,Motorolo and some other etc Manufacturers / Vendors .All trademarks are the property of the respective trademark owners.we just provide diagrams for study and repairing purpose.these images are uploaded by website visitors.so we will not be responsible for any loss or damage, including personal injury.for more detail read Terms & Conditions and Privacy & Policies at bottom.

Restore Hard reset will set your phone in origional factorry settings. It will remove all the data and apps that you installed. Your contacts will be removed and you have to add them again.


Flash Firmware we try to provide the best and latest flash files and firmwares, But we do not guarantee the accuracy or compatibility of any of the files. So use them at your own risk!.

The voltage drop depends on the powerbank as well as on the mobile phone's maximum battery voltage. External batteries have output voltage of 5V usually and the internal battery of a phone or camera can be between 3.7 to 5V.

The operating voltage however, of the internal battery, is around 0.5 to 1V less than the maximum voltage capacity of the internal battery in ideal operating scenarios. Maybe more! But usually less than 1V. Now when a external battery, powerbank, charges the internal battery, the voltage drops by less then 10% of the maximum voltage capacity of the internal battery. And in no way more than 1V.

Example

A phone with 2600mAh battery with max 4.7V

A generic powerbank with output rating of 2A/5V

Now, the phone battery will operate at around 4.3V maximum when fully charged and can go as low as 2.5V at the time of dying of battery.

Now when phone battery is almost full, let's say above 90%, the voltage drop across the external battery will be not more than 0.5V. So let's say external battery now operates at 4.5V or a little less under ideal conditions. But if the phone's battery is very less, let's say around 10%.

The internal battery of phone is likely to operate at around 3V and in this case, if an external battery is charging the phone, the voltage drop across external battery is going to be less. It'll operate around 4.7V now.

Why?

10% of 3V, i.e. internal voltage of battery is 0.3V right?

And i already told you that the voltage drop across external battery is around 10% of the operating voltage of internal battery.

Now if you notice, the voltage difference between external and internal battery is more when internal battery has less charge but it decreases when the internal battery becomes almost full.

This is one of the reason why batteries charge faster when possess low charge and the charge rate reduced as the battery nearly fills, because voltage difference is less.

Note : there are many factors affecting voltage and current like temperature, humidity, etc. Also they are all interdependent. I gave the above example considering everything constant except the internal battery's voltage and current.

 Disclaimer.We are not affiliate with cell phone companies like Nokia,Samsung,Sony Ericsson,Lg,Motorolo and some other etc Manufacturers / Vendors .All trademarks are the property of the respective trademark owners.we just provide diagrams for study and repairing purpose.these images are uploaded by website visitors.so we will not be responsible for any loss or damage, including personal injury.for more detail read Terms & Conditions and Privacy & Policies at bottom.

Restore Hard reset will set your phone in origional factorry settings. It will remove all the data and apps that you installed. Your contacts will be removed and you have to add them again.


Flash Firmware we try to provide the best and latest flash files and firmwares, But we do not guarantee the accuracy or compatibility of any of the files. So use them at your own risk!.