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[Verified] Logitech 304 mouse modified with lithium battery including buck module and integrated charging board

Overview

Designed a Logitech G304 dry battery modified typec charging port lithium power supply board
that supports CtoC charging.
Onboard lithium battery constant current/constant voltage charge and discharge. Built-in battery anti-reverse connection circuit and DCDC step-down output 1.5V circuit
supports USB and lithium battery switching. The cost of making
ultra-small
boards of 0.8mm or 1mm while punching
is about 3 yuan.

Verified output 1.57V to mouse

Design Files

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Update:2025-05-08 20:45:52

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