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I have a 3S battery controller module with batteries. It has output pins VCC and GND to which I need to connect Raspberry Pi. How to properly connect this module to Raspberry Pi to keep the USB port free? Is there any pins on board to which I can solder the battery module?

Also, I want turn on/off Raspberry Pi by thumbler. To which pins on board can I solder it? Should I just connect VCC wire through it?

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    You'll first have to have a circuit that converts the battery voltage to a stable and accurate 5v.
    – NomadMaker
    Commented Jul 26, 2022 at 19:06
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    You should explain what a 3S battery controller module is, or at least give its specifications (e.g. what is Vcc ?) And what is a thumbler?
    – Seamus
    Commented Jul 26, 2022 at 22:30
  • @NomadMaker I already have one. It has 5V and GND output pins. To which pins should I connect it?
    – Robotex
    Commented Jul 27, 2022 at 16:28
  • @NomadMaker For i.e. this one aliexpress.com/item/32809351392.html
    – Robotex
    Commented Jul 27, 2022 at 16:40
  • @Seamus aliexpress.com/item/32809351392.html
    – Robotex
    Commented Jul 27, 2022 at 16:40

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My preference is to connect the battery to a 5V UBEC.

UBECs typically accept voltages in the range 6V to 26V and produce a stabilised 5V output.

Connect the UBEC output to the 5V and ground pins on the Pi's expansion header. I tend to use pins 4 (5V) and 6 (ground).

See expansion header pinout.

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