To insert a battery into a drone, follow these steps:
Step 1:
Locate the side of the drone with the power terminal for connecting a battery.
Step 2:
Remove the O ring from that side.
Step 3:
Slide the battery in the slot so that the power leads of the battery are on the same side as the power leads of the drone.
Step 4:
Center the battery in the battery slot.
Step 5:
Replace the O ring.
Step 6:
Make sure the drone power cables are looped through the arm of the drone.
Step 7:
When it's time to plug in the battery insert the power terminal on the battery to the power terminal on the drone.