VTOL Crashed after hovering for around 4min

My vtol crash after hovering for around 4min.

I review log but their is no issue in pid and all everything work great but after 4 min motor stop and uav oscillate and came down.

While reviewing log i have seen battery temp as 70°C which is power module temperature as per me.

Is crash caused due to power module heating?

Please review log and give me your view