Got a maxi rough stack from Madvapes with 18650 batterry and ad-103 multi volt charger.Been vaping with Ego clone 900 mah batteries previous.Also got some dual coil cartos with it.Awesome mod so far but have a few questions.How long should this battery take to charge.I charged it overnight and it still had red light on charger in the morning.It died on me late afternoon after heavily vaping all day.Also the dual coils dont seem to be giving the heavy amounts of vapor everyone seems to be getting with these.The vapor on my ego batteriies and LR cartos seems alot more.Any recomendations?