Funny that I've focused so much on juice, tanks, and coils but never for a second questioned the safety or legitimacy of the pile of various batteries and chargers I've bought and used over the years. And here I was walking around thinking I knew what I was talking about...hell I've even given people advice a time or two
I had a battery explode in my first mod back in 2012. If that had not happened, I may have not have taken upon myself to learn as much as I could about batteries and safety with vaping.
When I started vaping, our choices in batteries were pretty slim and limited to primarily Trustfire ICR batteries. Shortly after that AW came out with the first IMR batteries. Since IMR batteries were "unprotected", most of the "vaping experts" were advising us to continue to use protected batteries in our mods.
From my research, this didn't seem right. IMR was a safer chemistry which didn't require protection circuits and was far less likely to flame/explode than ICR. And although IMR cells had less capacity than ICR, they had a lower internal resistance and were high drain which is a plus for vaping.
There was a common misnomer in the vaping community that a protected battery was safer to use than an unprotected IMR battery. There was a belief that a protected battery would prevent you from over-drawing your battery and prevent it to explode or vent gas. I'm not certain where this belief started, but it needs clarification. A battery labeled as "protected" does not always prevent you from applying a higher current draw than it is capable of handling.
The protection circuits in batteries vary from manufacturer to manufacturer, but primarily prevent you from over-discharging (using the battery past its minimum charge rating) or over-charging the battery. The "protection" moniker is not all-inclusive either. Some will provide just over-discharge protection, others have over-charge protection, and in some batteries over-current protection.
It made more sense to me that IMR batteries were the better choice, so I wrote my first blog, "Battery Basics for Mods: IMR or Protected ICR?" which became quite popular worldwide and was used on several online vendor websites as a guide for purchasing batteries. This blog was revised over the years and is now titled,
Battery Basics for Mods: The Definative Battery Guide for Vaping. Today, ICR batteries are considered obsolete for vaping, and I like to believe I may have played a part in that.
Battery technology for lithium batteries has improved by leaps and bounds over the last few years. This was inspired by their use in hybrid electric cars. Keep in mind that the batteries that we use in our mods were never intended to be used as such, but we have benefited by that technology just the same.
We currently have safer, more powerful batteries than a few years ago. Yet there are more catastrophic battery incidents in vaping now than ever before. We can place some of that blame onto there are more people vaping than a few years ago, but also how we are expecting more and more from our batteries. Many in our community are pushing the limits of the batteries beyond the safe parameters than they were designed for. Sub-ohm vaping with mechanical mods and using direct-battery (hybrid) mechanical mods, if used ignorantly, can make our vaping devices literal pipe bombs.
There were 50 major incidents last year (2016) alone and that's just the ones which make the news. More than ever, e-cigarettes explode during use. Explosions resulting from people carrying spare batteries in their pockets are also far more common. Regardless of the circumstances, e-cigarette explosions are far more likely to cause injuries today than they were in the past
. E-Cigarette Explosions: Comprehensive List
Sorry for the long rant and history lesson.