That is my point, they saved few cents and included obsolote technology into the radar.They don't need to conform to any standard when designing this, it's not like someone is going to plug an old game controller into it. BMS systems (if that is what it is) don't transfer power, they just monitor cell voltages.
If it is being used for data transfer it would be an odd choice. Maybe the designer is a boomer or they had a warehouse full of connectors somewhere going for free. They are sh!t connectors when a pin bends.
What old stuff they installed into the radar not visible for anyone ?
These connectors not used anymore because they are sensitive for bending and sort to the D grounding.Easy to damage, hard to repair.
Of course, we talk about the country that proudly used 8" FDDs well into the 10s : D