Teardown of Lenovo ThinkPad Stack Power Bank (Modular Design)

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Introduction
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Lenovo launched the ThinkPad stack kit back in 2016, including a variety of module combinations. And recently, we got our hands on one of the power bank modules. It has two USB-A ports and a total capacity of 10000mAh. So let's take it apart to check out its internal components.

Bill of materials (BOM)
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Charging Chip: Silergy SY6982C
Synchronous Buck Converter: MPS NB675
Synchronous Buck Converter: MPS MP8765
USB-A Socket: SUYIN

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