DIY Powerbank

This is a DIY Powerbank designed and constructed at the lab with a few of the shelf components and a custom designed 3d printable case. The components can be found at www.deltakit.net and other vendors too in your locality and are as follows:

1. USB DC-DC Converter: deltakit.net/product/usb-dc-dc-converter/
For converting the voltage of the battery into 5V regulated usb power

2. TP4046 Li-Po battery charger: https://www.deltakit.net/product/lipo-battery-charger-module-tp4056-1a-micro-usb/
For safely charging and properly using the Li-Po cell to be used in the circuit.

3. 3.7V 1600mAh Li-Po Cell: https://www.deltakit.net/product/3-7v-1600mah-lipo-rechargeable-battery/
The primary Power source of the circuit

4. Toggle Switch: Any toggle switch with a 6mm dia neck will work

5. 5mm clear epoxy LEDs: One Green and One Red to indicate power on and charging respectively.

The connections are pretty straightforward.
1. Connect the Lipo battery to the B+ and B- connections