All you need to see your Apple Pencil's charge is the Batteries widget Apple included with iOS 9. It displays in the pull-down Widgets and Notifications view on your iPad Pro. If you don't see the Batteries widget, that means you need to enable it. Here's how:
- Swipe down your iPad display from the bezel area to show Widgets and Notifications
- Tap Edit at the bottom of the Widgets list
Tap the green button to move the Batteries widget to the Widgets View list
- Look for Batteries in the DO NOT INCLUDE section, then tap it's green add button
- Tap Done
My Apple Pencil battery is still going strong with an 82% charge
Now you should see your iPad, Apple Pencil, and other Bluetooth accessories along with their respective charges in the Batteries section. That's a lot easier than waiting for your Apple Pencil's battery to die to know it's time to recharge.