Magic Trackpad 2 only charging to 72%
I bought a Magic Trackpad 2 some months ago from Currys UK but only connected it yesterday, when the batteries in my Magic Trackpad 1 finally died. This is on a 2011 Mac Mini, now demoted to just a streaming device in my bedroom, where I rarely use the trackpad, as I normally access this Mac remotely using Jump Desktop from one of my Macbooks. This Mac Mini runs High Sierra 10.13.6, the highest that will run on this machine. The new trackpad connected with a bit of difficulty (I had to temporarily connect a mouse to add it to the Bluetooth devices) but it then worked properly. On the trackpad app in System Preferences the battery power level was showing at 60%, so I left it on charge all day from a 60W Apple Charger, using the supplied USB-C to Lightning cable. with a view to conditioning the internal lithium battery. It has only charged to 72%.
Any suggestions folks or is it a visit to the Apple Store? The receipt from Currys has long vanished.
Wilson