DIY Power-Bank
This is a small powerbank with 1200 mAh. It uses the TP5400 module which has a micro-usb connector connected to a charge-control chip to charge a 3.7 volt LiPo accu. The module has also a step up voltage regulator to provide 5 volt on an USB-A female connector. The following parts are required:
Optional you can use Connector cable or solder the accu direct to the module.