I taken the necessary precautions in creating my own custom battery pack: I bought two 18650s from the same shipment and will attach a diode from each positive end of the 18650s before attaching the positive ends into one wire.
However, I am confused on how to charge the batteries when the eventually deplete, all in one circuit.
- I am trying to power an item that takes a constant 5V input in order to run.
Here is my design:
- I am going to connect the batteries in parallel, with diodes on the positive terminals of the batteries/wires. Connect the positive wires with diodes and negative wires to form a parallel battery.
- Connect the positive and negative "double wires" to the BMS B+ and B-
- Connect the BMS P+ and P- output to the 5V Step Up Conveter Input
- Connect the Output of the 5V Step up to a Switch so I can turn the whole system off or on.
How do I charge the parallel batteries in this circuit?
- All of this circuitry is to make 5V output from a two 18650 batteries in parallel, so how do I get power in? Would I make a Y Split at the P+ and P- of the BMS output, maybe?, not sure if that even makes sense?
- Do I need diodes, wouldn't I not be able to charge the batteries if I put in diodes, blocking current from coming in?
- Is the switch in the right place?