红水杯

3s protection board

Overview

I bought two 4s batteries from the seafood market. The seller said they were from Xjiang drones, but there is no way to verify the authenticity. However, judging from the test current, it is not too false. 20A discharge has 26XXmAh capacity, nominal 2800.

The original battery 4s is not very easy to use, and it doesn’t even have a protective plate. The most used one is 3s, so I thought about modifying it. The CM1033 used to protect the chip was also obtained from Lao X.

I tried it, but the size didn’t fit. I had to re-draw the board.

Design Files

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Update:2025-05-09 00:17:29

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