iphone battery pack

Posted on Feb 7, 2014

How to create a Battery pack for your Apple device that is powered by normal Alkaline batteries. This will be a general overview of building the circuit for the battery pack and the detailed instructions for the case will be given in part 2 of this post. NOTE: When soldering the USB socket, face the open part to the right with the connector pins facing left, as in the schematic. Inside the

iphone battery pack
Click here to download the full size of the above Circuit.

socket, you will see that there are "2 halves", a hollow half and a half with pins. Make sure that the hollow half is on the bottom and the pins are on the top. This circuit is necessary for the charger to be accepted by the Apple device. Basically, the USB socket must have exactly 5V on the first pin, 2V on the second and third pins, and ground on the fourth pin. I cannot give step-by-step instructions for soldering in each and every resistor, wire, capacitor, regulator, ect. because depending on the type of PCB board you buy, the pre-made copper insertions on the back of the board are different. Any type of battery above 6 volts will work for this circuit. To use this circuit, just plug in your USB charger cord and plug it into your Apple device.

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