The battery capacity is 650 mAh.
No, it is not power regulated. It is in constant 3.7 V output mode.
Yes, the Gotek S is an auto-draw device, just inhale from the drip tip and it will auto-fire.
The Gotek S offers refillable and prefilled version pods.
Coils are not replaceable.
The pod is made of PCTG.
Yes, you can. The Gotek S comes with a lanyard hole.