Just stared acquiring lights, ( aa's and 18650's for now) Question on using Cr123's in the 18650 lights; some listings show either. If not, what do I look for in specs (or inquire) to tell me its safe to substitute the 123's? I would use the 123's for backup or if I wanted to put a light in a vehicle (I've read hot vehicles are not good for the Li-ons)
18650, cr123 interchangable?
- Thread starter bylite
- Start date
Help Support Candle Power Flashlight Forum
ChrisGarrett
Flashlight Enthusiast
Some lights can use both, like my Fenix PD32 and some lights can't, like my Zebralight SC-600 and three Convoy lights.
You need to know what voltage the driver board can handle. For the latter two above, they can handle 4.2v, for the former, it's ~6v.
Input voltage is what you want to look for. Some light makers give this spec, some don't, but they will tell you what batteries/cells you can use, more often than not.
Chris
You need to know what voltage the driver board can handle. For the latter two above, they can handle 4.2v, for the former, it's ~6v.
Input voltage is what you want to look for. Some light makers give this spec, some don't, but they will tell you what batteries/cells you can use, more often than not.
Chris
Chris made a good point about voltage. Another point is the difference in diameter between CR123 and 18650.
If a light will accept an 18650, then it will accept CR123. A good example of this is a Solarforce L2P.
However, if a light says it accepts CR123, you'll need to do more research since a 18650 is slightly wider than a CR123. A good example of this is a Surefire 6P, which will not fit a 18650 without modification.
If a light will accept an 18650, then it will accept CR123. A good example of this is a Solarforce L2P.
However, if a light says it accepts CR123, you'll need to do more research since a 18650 is slightly wider than a CR123. A good example of this is a Surefire 6P, which will not fit a 18650 without modification.
