Collection of DC/DC Converters, Battery Chargers, and Power Supplies

an usb power delivery powerbank pcb based on IP5328P chip, feel free to use it

An ATiny85 based Lithium-Ion Battery Cell Boost, Protection, and Monitor Circuit

The Project explains how to build a cost-effective Power bank for mobile phones during travel and for powering up the IoT Projects as DIY (Do It Yourself)

This is an open source hardware 5V rechargeable power bank, intended for use with 1 Li-ion / Li-Pol 3.7V rechargeable battery cell.

4-lines power supply bank

Oitswilliam Pang 604 Multipurpose battery family.

Simple project for an inexpensive power supply bank

CSE-316 Hardware Project

Here is a system to instantaneously charge your smartphone within a SNAP⚡