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Mini power bank 18650

Overview

This solution uses Yingjixin IP5328P as the main control design of a Mini mobile power supply.
Supports QC2.0, QC3.0, PD2.0, PD3.0 and other fast charging protocols, with a maximum output power of 18W.
There are 5 power indicator lights on board, one of which is a fast charge indicator light.
The battery core uses a single 18650 lithium battery. It is recommended to use a power 18650 lithium battery. When the power output is 18W, there are certain requirements for the battery's continuous discharge capability.
When necessary, this mini mobile power supply can be used to charge 18650 lithium batteries. The maximum charging power is 18W and the charging current does not exceed 5A.
The 18650 battery holder uses a patch. I have considered a direct-plug battery holder before, but the direct-plug battery holder has structural interference with USB-A and type-C, so I did not use it.
Note: There is currently no proofing test, so we don’t know if it can work properly.

Mini power bank 18650.6.jpg

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-19 10:06:00

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