So I am not a noon by far but all of my mods up until now have had internal batteries , I bought a subbox kit about 2 months ago and bought a vtc 18650 to go with it based on user reviews on batteries . I didn't buy a charger because I figured I could use the pass through on it.well my problem is I did not use it for a week or so while I was rotating through my cool fire and my eleaf and when I returned to use it it would not turn on . I checked it with my meter and only have 1.21 v on the battery.i just ordered a eleaf 60w kit a uwell crown 2 efest 35 amp batteries and a nitecore i2 my question is , will I be safe to chare the vct or has it went beyond the threshold for safety ? I don't want it to blow or damage my new charger when it arrives on wed . Any ideas or advice I can get is greatly appreciated.