Now is the time to assemble all of your components; the battery bank, the two circuits and the solar cells.



Following the schematic, you will need to:

Connect the wire coming from the positive end of the sequence of solar cells to the "In+" hole of the TP4056 5v charging circuit.

Connect the wire coming from the negative end of the sequence of solar cells to the "In-" hole of the TP4056 5v charging circuit.

Connect the wire coming from the positive end of the Li-Ion batteries to the "Bat+" hole of the TP4056 5v charging circuit.

Connect the wire coming from the positive end of the Li-Ion batteries to the "In+" hole of the DC Boost Module step up Converter 3.7V to 5V circuit (the red circuit board with the USB port).

*The following are also detailed in the next step:

Connect the center pin of the switch to the negative end of the batteries.

Connect the right pin of the switch to the "-BAT" hole on the TP4056 5v Battery Charger Circuit Board.

Connect the left pin of the switch to the "-IN" hole on the DC step up Converter 3V to 5V USB Charger.

For my project I was able to sew my solar cells to the project case because of the fabric I epoxied onto the back but Probably you will have a hard case so i suggest that you glue and mount all of your circuitry inside of your project case to the best of your abilities in a way that will keep everything safe. A step on installing the USB discharging circuit and the switch will follow in their own step.