I am using TP4056 module to charge 4 Li-ion cells in series using 4 of the modules. Red wires in the diagram represent wires for positive terminals and black wires from the negative terminal while blue wires and green wire used for connections.
Now when I tried charging with this circuit the circuit burned out and TP4056 and other components in the module started emitting flames and obviously, the circuit failed to do what it was supposed to do.
If anyone could tell me the right circuit or changes I can make in the present circuit. I have already considered problems like circuit getting short or too much input and taken care of that already yet the circuit failed and when tested for 2 cells in series it worked fine but failed of 4 cells.