Thanks for looking. I would like some advice on a charging/power circuit for a raspberry pi laptop I would like to make. It needs to power both the Rpi 3 and an LCD display. The LCD is a 10" 1280x800 with its own controller board. I am not sure it will run off of 5.2V like the pi so I have a couple of designs.
These are based on the TP4056 board to charge the 18650 Li-ion batteries, and an XL6009 boost converter to get 5v+ from the 3.7V batteries.
Question: could you please look at my three designs below and provide advice on the "best" one? Option 1 (not shown) would run both Rpi and LCD from the same XL6009. Option 2 has two XL6009s from the same battery pack. Option 3 is similar to the Adafruit design I believe. BTW, there will be a toggle switch between the batteries and the XL6009s.
Also, can any of these be charging and running the laptop at the same time?