I am making a Charge Discharge Project for 18650 batteries. I am using TP4056 and ZB2L3 modules. The idea is to make a PCB that can be stacked one next to each other and be able to make them work using the same power source. I have been searching for a good solution for many days but cant find something appropriate. I want to create a connection to PCBs so they can use the same power supply.
Here is a link to the project: [https://oshwlab.com/leopardi/battery-capacity-charge-discharge_copy](https://oshwlab.com/leopardi/battery-capacity-charge-discharge_copy)<br>
Thanks a lot.