I have the same problem with new CENTAURUS mod (Lost Vape).
I have tried to change several pairs of new fully charge baterray, but still not working. The mod always read 4% even with freshly full bateray.
After switching several set of baterray, I put back the first set that I tried earlier. Then finally it read 97%.
However after 100 puff or so, the "CHECKED BATTERAY" Error show up again.
My question, is this error caused by software that was not setup properly or mechanical fault on the mod ?