Hmm 2x RCR123, 2x CR123 or 1x 18650

I'm looking to get the Eagletac D25cLc2 and it's says it can use either of these batteries just want to know what's the best way to go for higher output longer run times. Say as an example would 2 cr123a's put out more performance (lumens) and last longer on a high mode then a 18650 ?

Thanks.

Most of these lights are made to perform very well with 18650 batteries. The 18650 battery will give you the longest runtime plus good output performance.

TO FlashKat: Thanks =], few more things, sorry lol with the 18650's I know they can vary from say 2,200 maH to 3,100 maH and they start wit 2 letters before the 18650 e.g LC or AW I have 2 Surefire LC 18650 2,400 maH 3.7's rechargeable's are these alright ? Or should I get AW 18650's I just want to know whats good for maH and what brand and type thanks

Your current should be fine. We have not had any issues with Eagletacs own 18650's. They are also coming out with some 3100mah 18650's that support higher current along with smaller sizes as well.

I know that Surefire does not make 18650 batteries. Check again on the brand. 2400 mah 3.7v will work fine as Vortus has mentioned

John_Bowtell said:

TO FlashKat: Thanks =], few more things, sorry lol with the 18650's I know they can vary from say 2,200 maH to 3,100 maH and they start wit 2 letters before the 18650 e.g LC or AW I have 2 Surefire LC 18650 2,400 maH 3.7's rechargeable's are these alright ? Or should I get AW 18650's I just want to know whats good for maH and what brand and type thanks

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At the very least, I prefer an 18650 because it is a single unit. Less individual units to lose if you are carrying spares in your backpack and such. I wish surefire would start offering AA lights. Are Energizer Lithiums any worse than all of these more exotic batteries for their size?

I run AW18650's when ever possible, keep CR123's handy for spares and switch to 123's when a light might be exposed to sub-zero temperatures. The Li-ion can be damaged if they freeze solid, or so I am told.

FlashKat said:

I know that Surefire does not make 18650 batteries. Check again on the brand. 2400 mah 3.7v will work fine as Vortus has mentioned

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Ohhh... yer they are Ultrafire lol I bought them off the ledtorchshop.com.au website Its hard to find any other 18650's around especially the AW 18650's

The Ultrafires should work with no problems. Have fun with with your new toys

John_Bowtell said:

Ohhh... yer they are Ultrafire lol I bought them off the ledtorchshop.com.au website Its hard to find any other 18650's around especially the AW 18650's

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Is there any way you can test the accurate out put of lumens from your flashlight ?

I have a bunch of 1x123 lights, so when I buy a 1x18650 light I make sure it's also compatible with 2x123. That way I don't have to stock special batteries for my larger lights.

Also, nobody makes an 18650 primary. So, if the power goes out and I have to use primaries because my rechargeables run dry, only my 1x123-compatible larger lights will be usable.

Those two reasons are enough for me to not even bother with 18650s. If you're not worried about extended power outages and you don't have an existing stockpile of RCR123s, it probably doesn't matter for you.