FFS, someone put a battery in your box by mistake, or because they were trying to be a funny arse. Don't call the chuffing none emergency number, just get over it and get on with your life.
I've got one of those batteries on my desk, they're used for mobility scooters, house alarms and stuff like that. Looks like a packing error at the sender if anything. Just advise Logitech, not your problem to investigate it.
On the packaging aswell it says 'FLEXTRONICS FGSS' which is a company that Logitech use for the fulfilment of the item. Doing a Google it seems like they could very much supply batteries etc, however it's still strange because the reported weight on the shipping label is 0.5kg when the battery is obviously a lot heavier than that.
Take part number,
Enter into google,
Take details,
List on Ebay,
Profit.
Assuming that is, after talking with Logitech about "having by any chance lost a battery"
and they don't want it back..
The battery looks pretty battered and certainly didn't look new. I've put it outside.![]()