Every protected
ICR Li-ion battery should be considered obsolete for use in all mods, mechanical or regulated. In this day of modern battery technology, there is no reasonable reason to use an ICR battery.
AW ICR li-ion battery
Number one, they are an unsafe chemistry. Cobalt-based ICR batteries are flamable in nature and become unstable when under high performance stress. This is the reason that they have the little "protection circuits" in the top of the battery, to be anywhere safe to use them at all. Should that little protection circuit fail, you'll literally have a pipe bomb in your hand should the battery fail.
Number two, these are a low drain battery with very little amperage output. These are best suited for flashlight applications. Only two years ago, these were the batteries recommended for personal vaporizers. Since then, IMR batteries have surpassed ICR from both a safety and performance perspective.
IMR, or manganese-based batteries are a safer chemistry. They are more tolerant to stress and do not require the protection circuits built into the battery like ICR do. They may still go into thermal runaway, but in a less dramatic fashion by only venting gas and heat. IMR batteries are also "high drain" batteries, meaning that they can provide the high bursts of energy that our mechanical and regulated mods demand for optimal performance.
AW IMR
IMR/hybrid batteries are a mixed chemistry of ICR and IMR which just recently became available to vapers, providing the high mah capacity of an ICR and the high-drain/high-amp/safe-chemistry of an IMR battery. Some of these have amp ratings of 20 - 30 amps.
Sony IMR/hybrid
Battery Basics for Mods: IMR or ICR?
Deeper Understanding of Mod Batteries
* You can not use an ICR battery for sub-ohm vaping. They typically have less than 3 amps continuous discharge rate. All 18650 IMR batteries will have at minimum 10 amps continuous discharge rate, which allow them to be used down to 0.6 ohms safely. Go lower than that and you need a higher amp battery.
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