fish001

[Unverified] 4-series 21700 protection board-cw1244

Overview

The appearance is adapted to the 21700 battery, which is very suitable for the open source project ip5389-4 series mobile power supply by Niutouge @wzw666.
The parameters of each component can be based on the official specification of cw1244, which should not be a big problem. The withstand voltage of the mos tube should be more than 1.5 times greater than the battery voltage. The internal resistance depends on your wallet. If you have money, buy expensive low-resistance tubes.

Design Files

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Update:2025-06-20 05:13:48

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