16340 light for keychain

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ChrisGarrett
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toddcshoe wrote:
ChrisGarrett wrote:
Just be aware that that light only has a 3.0v driver, so it’s CR123As, or RCR123s. 16340s will probably blow driver.

Chris

Be careful there. Lots of brands call their cells RCR123A, some are 3.7v and some are 3.0v. Example a Olight RCR123A isn’t the same as a Tenergy RCR123A. The Olight is a 3.7v cell and the Tenegry is a 3.0v cell, and they all are of the size of 16340.

I exclusively carry 16340/3.6v/3.7v lights, so I’m well versed in the nomenclature of the specifically different cells.

3.0v and 3.2v cells are more correctly referred to as RCR123s, which are really an LiFEPO4 chemistry. The older and more archaic designators: ICR/IMR, for 3.6v/3.7v lithium cells—LiCo, or LiMn cells, are a different animal entirely.

We always have to look at what a particular driver supports, to know what cell a light can take.

In this case, FastTech states that the driver of the light in question only supports 3.0v, so that’s a CR123A or an RCR123 3.0v/3.2v cell, since CR123As come out of their packs at about 3.25v.

People tend to conflate the two/three chemistries as being equals, which they are not.

Chris

toddcshoe
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ChrisGarrett wrote:
toddcshoe wrote:
ChrisGarrett wrote:
Just be aware that that light only has a 3.0v driver, so it’s CR123As, or RCR123s. 16340s will probably blow driver.

Chris

Be careful there. Lots of brands call their cells RCR123A, some are 3.7v and some are 3.0v. Example a Olight RCR123A isn’t the same as a Tenergy RCR123A. The Olight is a 3.7v cell and the Tenegry is a 3.0v cell, and they all are of the size of 16340.

I exclusively carry 16340/3.6v/3.7v lights, so I’m well versed in the nomenclature of the specifically different cells.

3.0v and 3.2v cells are more correctly referred to as RCR123s, which are really an LiFEPO4 chemistry. The older and more archaic designators: ICR/IMR, for 3.6v/3.7v lithium cells—LiCo, or LiMn cells, are a different animal entirely.

We always have to look at what a particular driver supports, to know what cell a light can take.

In this case, FastTech states that the driver of the light in question only supports 3.0v, so that’s a CR123A or an RCR123 3.0v/3.2v cell, since CR123As come out of their packs at about 3.25v.

People tend to conflate the two/three chemistries as being equals, which they are not.

Chris

I am actually completely agreeing with you. I was just stating that a lot of times the ads state a cell as RCR123A whether it’s a 3.0 volt cell or a 3.7 volt cell. Reading the specs usually clear things up and I kind of assumed you knew the difference but I was worried that someone would inadvertently order the wrong cell if they had a uber sensitive driver in the light.

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mudguts
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My EDC is a trustfire mini 2 used it for years

toddcshoe
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mudguts wrote:
My EDC is a trustfire mini 2 used it for years

That is a cool looking little light. Is it easy to get to the emitter?

"Everywhere I go, there I am"

mudguts
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Hi,

I have never taken it out, but its very near the edge on the head.

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