thoraway97 t1_je1jfz6 wrote on March 28, 2023 at 7:08 PM

Based on the pins in your other picture, clk and data are probably an I2C interface, int is for sending hardware interrupts, not sure about "det". If you have access to an arduino or something, you might be able to try reading the output from a working BMS and then reverse engineering it for your own battery, but that's a bit of time and effort compared to a OEM part. Maybe some sort of insulator inserted to block the heat from the fan instead?

lululock OP t1_je1k5sw wrote on March 28, 2023 at 7:13 PM

I planned to get a working BMS from (preferably) a non bloated battery to minimize puncture risks.

There's absolutely no insulation from the heatsink and the battery. Microsoft did put a huge chunk of the cooler on top of the battery (I strongly believe it has been done in propose). Nobody with a sane mind would do that but yet, Microsoft did it...

I think that I'll try to solder 18650 cells to the original BMS and see how it goes. If it does well, no need to reverse ingeneer it. If not... I guess I'll have to acquire some knowledge first to do it myself.