The pencil stopped working and then I noticed two brown marks where the pencil connects to the iPad. There appears to be lots of other people experiencing the same problem. Apple customer services claim not to know of such an issue which I find difficult to believe. They offered no solution.
Apple Pencil (2nd generation)
Many users of Apple Pencil often misidentify cosmetic marks, that appear on their second generation Apple Pencil, as burn marks.
The marks usually correspond with the magnetic contact points of the Apple Pencil to the iPad - and are due to dust or grit (common in many environments) present when docking the Pencil the iPad. Corresponding marks are sometimes seen on the iPad itself. These marks are cosmetic - and do not affect function of the Pencil or associated iPad.
Basic material science tells us that an hard/abrasive material will embed itself in the surface of the softer material (in this case, the body of the Pencil) - and this can abrade the surface of the harder material (the anodised coating) as the Pencil slides on/off of the iPad charging pad.
Keeping these surfaces clean and dust free can reduce the possibility of cosmetic surface damage.
I might perhaps suggest that the marks were first noticed when you experienced other difficulties with the Pencil - the two issues being otherwise unconnected.
Consider that the Pencil's plastic housing will physically deform, due to heat, before the material itself will burn.
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Some coincidence that the apple pencil stopped working when the burn marks appeared isn't it though. It seems to me that the 'basic science' here is that the two burn marks appeared and the pencil stopped working. Now Apple want to wash their hands of the defective product.
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apple pencil burn marks and now broken
