I had this issue as well!!!! And my battery was still at 70%! Suspect it's the current drawn from the battery. Maxed out.Sg so hard to
Sg so exp to get aircon i once tried a parallel coil build @0.26 ohms, tried to vape 70 watts but then they say battery low
But my battery was still about half
Finally got some 30 A (claimed) VTC5s. Looking good so far.