Some manufacturers brand their batteries, like Duracell’s DL123A and Energizer’s EL123A. These are just variants of CR123As, which may be referred to as 123, 123A, CR23, and more. Why do I see names like EL123A, 123A, and K123LA? HERE ARE 10/100/400 PACKS OF CR123A 3V BATTERIES THESE BATTERIES IN PARTICULAR ARE ACTUALLY VERY POPULAR NAME BRAND BATTERIES THAT WERE WRAPPED WITH BLACK. We always indicate whether our flashlights can accommodate multiple battery sizes so you don’t buy the wrong size cell, and you can shop for CR123A flashlights here. 18650s are slightly thicker than CR123As, so you may need a battery sleeve for a secure connection. Some 18650 battery-powered flashlights and devices have long, spring-loaded interiors to account for varied battery length, allowing 2 x CR123A batteries to squeeze in. ![]() Can I use 2 x CR123A batteries instead of an 18650 battery? It’s important to note that RCR123A batteries usually have a 3.6 – 3.7 voltage, and not all flashlights and cameras can use both CR123As and their rechargeable counterparts. They are slightly shorter (16mm) compared to CR123As, utilize lithium-ion chemistries, and usually have lower energy capacities. Yes, but they are often referred to as RCR123A or 16340 batteries. The 23A refers to the size of the battery, which in this case means the CR123A is 2/3 the length of a standard A-size battery. The CR indicates the chemistry of the battery, a prefix the IEC uses to denote the use of lithium chemistry, specifically LiMnO2. Like many batteries, the name of a CR123A cell holds a lot of information about the chemistry and size. ![]() ![]() Frequently Asked Questions Why is it called a CR123A?
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