DIY Assembling a Fast-Charging Power Bank Guide

If you are interested in DIY fast-charging power banks, you might want to take a look at this article.

If you happen to have a power bank like this that can hold three 18650 cells or two 21700 cells, you can simply assemble it, and it can even charge your laptop as long as your laptop supports PD. Although the power is not very high—just over 20W—it is still quite practical.

When you plug it into your computer, you will see a prompt like the one shown above.

After assembling it, the overall appearance looks decent. It features a Minion-style yellow color with a transparent casing, allowing you to see the internal circuit IC.

You can arrange all the components on this side, and the main control chip is the IP5356.

This side does not have components attached, and it is the contact surface for the battery.

You can assemble it with three batteries.

Then you can test the charging and discharging performance.

For maximum power, when using an electronic load for stress testing, it can remain stable at around 24W.

In terms of protocol, it supports PD 3.0 with a configured output of 22W.

With that, the build is complete, and it can charge your phone quite quickly.