How To Make A Cell Phone Charger With 9v Battery. By this time the setup was almost complete and was ready to be tested. Cell Phone Charger From an Old 9V Battery.
Solder the Zener diode to the left and right USB connector prongs. In this project we will be making a circuit that will be used to get 5 volts regulated DC supply from 220 volts of AC supply. The average 9-volt battery has about 500 milli-Ampere hours mAh.
For instance an iPhone 7 needs about 1960 mAh and a Samsung Galaxy S8 or S9 will be fully charged with as much as 3000 mAh.
The average 9-volt battery has about 500 milli-Ampere hours mAh. The average 9-volt battery has about 500 milli-Ampere hours mAh. Phones Laptops. I connected the circuit to the 9V battery and then used a USB cable to connect the circuit to the cellphone the cellphone started charging as can be seen in the image.
