Mobile Battery Bank Circuit Diagram

Usb stands for universal serial port.

Mobile battery bank circuit diagram.

Nowadays mobiles can also be charged using the usb outlet of pc. As can be seen in the above design a charger circuit charges a 3 7v cell once the charging is completed the 3 7v cell box is carried by the user while traveling and whenever the user s cellphone battery goes down he simply connects this 3 7v cell pack with his cellphone for topping it up quickly. 3 7v power bank mobile battery charger circuit diagram 3 7v power solar battery charger circuit with voltage regulator wireless power transfer circuit wireless mobile charger 40000mah lipo power bank 10 steps with pictures what is a power bank charger what is the mechanism of its working. Tp4056 module with battery protection circuit.

But if you use lm7805ct then the output current is not more than 1 a in this case your mobile battery take more hour to get charge. Below is the circuit diagram for our power bank. 3v to 5v boost converter with 1a current control. So i suggest to use only this ic.

The power banks are additional power source and it ensures the power backups when we travel or in emergency situations. In the regulator circuit for this power bank i use 5v regulator ic l78s05 this is not a normal lm7805ct ic but pin out and looking size is same as any 78xx regulator ic. Power bank modules connection diagram it contains three stages first one is tp4056 li. As we can see its fairly easy to make a power bank with li ion battery tp4056 module and a boost converter.

This article will help you to design a portable cost effective power bank with variable dc output hence you can change the output voltage range depends on your phone battery specification. As usb outlets can give 5v dc and 100ma of current.