I accidentally shorted the LiPo battery by turning up side down and plugged the balancer plug on the Smart LiPo balancer. I saw tiny sparks and heard slight noise. How did that happened? Is it because the power was on from the Smart Lipo balancer? Did the shorted damages the Lipo battery and may catches fire? When I charged the Lipo, I heard slight popping sounds. I was thinking the wrapper was loose, or the battery was ballooning. Should the battery gets hot immediately when ballooning?