Macbook pro 8,2 blues. reboots during install from USB after 1/4 of load screen

I have four of these, with extra ram and hard disks. Swapped them around, they all get the same problem. None of them have working batteries. Trying to load big sur, but even an internet recovery has them rebooting during the load screen. Is this a known problem?

submitted by /u/cryptoanarchy
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