I was happily vaping on my Panzer mech mod using atomic dripping atty with DUAL micro coils (26 gauge 4 wraps a piece). Battery was charged. I then noticed it wasn't chucking the vape as it previously was. It was sluggish, then it was working fine, sluggish again and continued that way for a while. I decided to rebuild the coils using 24 gauge single mAcro coil. The coil would heat up really slow then the body and button of my panzer got hot, which had NEVER happened before. WHAT GIVES?! is my battery trashed?