@pickover You are not supposed to connect different cells like this. There will be slight difference in voltages between the cells and that causes heavy current to flow initially which may damage the wires/batteries
@sivers Hi Derek @sivers, your books inspired me a lot. Happy that you were in my city same time sad that I could not meet you. Wish you all the very best of health. Take care, any help required in Bengaluru I'm there๐