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Key prefixes printed on 18650/21700 Lithium-ion batteries denote their cathode chemistry, which determines performance, safety, and applications. Below is a breakdown of common prefixes and their meanings:  Battery Prefixes Chemistry Chart Prefix Full Name Chemistry Key Traits Common Uses Safety IMR Lithium Manganese Rechargeable LiMn₂O₄ High discharge (15–30A), stable Power tools Safer ICR Lithium Cobalt Rechargeable LiCoO₂ High capacity, low discharge Laptops, …

Understanding the Truth About Button Top and Protected Button Top Batteries Important! Panasonic, Sanyo, Sony, and Samsung DO NOT manufacture Button Top or Protected Button Top batteries. These reputable brands manufacture only Flat Top Unprotected bare cells. However, some auction sites and wholesalers are misleadingly advertising the following batteries: Panasonic 18650 Button Top Battery Panasonic 18650 Protected Button Top Battery Sanyo 18650 Button Top Battery Sanyo 18650 Protected B …

About Lithium-ion In the world of Lithium Rechargeable Batteries, guides and descriptions below will come in handy and expand knowledge base and horizons for those wandering around and trying to navigate themselves through the vast number of abbreviations (e.g. li-ion, 18650, 26650, 14500 ...), and terms not familiar with — related to these unique and powerful Li-ion must haves, used in many high drain-low capacity, and low drain-high capacity applications.Lithium-ion Rechargeable Ba …