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IP5389-3S

Overview

The 3-string 21700 mobile power supply solution based on IP5389-bz supports up to 20v3a. It has been verified that it works well after being used for a long time. I think the size, weight and capacity of the 3-section 21700 are well balanced and suitable for daily use.

The outer casing is an aluminum profile with a size of 71*25.5mm. You can definitely find it on Taobao and the price is not expensive.

Remember to add a lithium battery protection board to the battery pack. If possible, you can use high-end batteries such as Samsung 50e.

Notice! ! ! ! ! ! ! ! ! !

This shell does not support Lishen 21700

Lishen 21700 is a little thicker than the ordinary 21700, so it can’t be stuffed in.

Also, without adding emarker for power supply, the PD output is only 3a.

Design Files

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Update:2025-06-23 13:06:13

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