Battery Light Flashes Red Won't Charge

A while ago, the battery light started blinking 5 times, (4 times red) and refuses to charge.  When I run the diagnostic (holding Fn down on start up) it says "Msg: Battery - unable to retrieve battery health".

I have since replaced this battery twice, with no change. 

I have updated the bios. 

I have replaced the power supply.

I ran the support assistant which correctly identified my laptop:  Dell Inspiron, 17R 5720.  Unfortunately, it also could not fix the problem.  In fact, it said "We did not find any issues."

I installed all drivers it recommended.

I am at a loss at what else to try here?