Chosen Solution
What is the size of the PIN Battery?
Hi, Not sure what you mean by PIN battery but the battery in the controller is a 3.7V 1000mAH capacity battery. The physical dimensions are 8.0mm height (or depth) x 30mm width x 40mm length Here’s an image from the ifixit GuliKit KingKong 2 Pro Battery Replacement guide that shows the specifications
(click on image)
