Apple Pencil 2 has dead battery

Hey ac266,

You can find service options for your Apple Pencil here: iPad Repair & Service - Apple Support

If you need further assistance on getting your Apple Pencil replaced, we'd recommend contacting Apple Support here: Get Support

Thanks!

Just to add a bit to the previous reply, lithium batteries that are stored depleted (or nearly depleted) over an extended period of time, will lose their ability to be recharged. This is true for all devices that use lithium batteries, not just your Apple Pencil.