MikeX, you are saying that all the batteries sold by Medgraphics and Euroenergy, and fitted by lots of us, are a modification when they are identical in form, fit and function? The lamps I get from hospital lamps supplies are non OEM, is that a modification too?
Some bits I can understand the reasoning, but these batteries are all made in the same factories, the OEM sources them from the same sources as the battery suppliers we use, they all have ISO certification and the requisite traceability, it is not as if they are buying off the "grey" market.
The argument you use sounds like a manufacturer trying to justify monopoly pricing at gouge levels.