Take off the cap of the pencil and plug it directly into the charging port of the iPad to charge it. The pencil also has a adapter that can be directly charged with the lightning data cable.
1, when you get the apple pencil, you will find that the bottom half of the pen is actually two parts,
2, the back is like a pen cap, can be directly pulled out and opened
3. Then the apple pencil comes with lignting plug, which can be directly plugged into the interface of ipad pro to charge.