Resources on how to add batteries to a pcb

hi! i'm designing a pcb and i'm a bit lost on how to add my lifepo4 batteries to it. well, connecting a battery is simple...: i'm specifically lost on the implementation of a charging IC. do you know any resources on this topic and would like to share them?
thanks a lot!

edit: lifepo4 = lithium iron phosphate. and the cells are not in series. i do have several but i'm planning on putting them in parallel.

Does lifepo4 mean 4 lipo cells in series or is that a typo?

lifepo4 = LiFePO4 = Lithium Iron Phosphate Cells maybe ?

Good theory! I think you're right.

My suggestion would be to find a circuit you like from, say, Adafruit and copy it. Adafruit usually gives PCB layout along with circuit schematic.

lithium iron phosphate, yes, thanks for the clarification! made an edit to the original post.

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