Hello, i just got a small question since you guys know how to handle things here. I just bought an Alpin Nu-Flare Rebel 100 flashlight and i got 2xCR123 Duracell Ultra batteries with it. Now my question is, can i use a rechargeable 18650 or 2 x RCR123 batteries with safety? If yes, i would like to know which ones specifically would fit the best, or at least tell me which mAh should i choose to avoid problems, maybe bulb issues etc. Thanks in advance.
the mah would not cause any problems
an 18650 might work, but it may also be too wide to fit in the battery tube. two rcr123a might work, but voltage might be more than the driver can handle and you could fry the driver or the led
got a link to where you bought it?
Here is the link where i bought it from. Though the model they delivered is the brand new Rebel 100. Better than the 90.
http://www.survival.gr/fakos_alpin_led_alx-77r92l-xre_210_lumens_863077-p-1716.html
The exact model is this: Alpin ALX-77R102L
I cant read greek,but from what i can make out you have bought a 40 euro light .Which has an xre led .I cant see any spec ,but a member will know the voltage of the emitter.I states two cr123a so if you use two rcr 123a there should not b a problem.As long as you buy( 3.0v) rcr123a
there is quite a bit of voltage difference between rcr123a and cr123a. i did a quick search and couldnt really find any voltage ranges on it. most likely a 18650 will be too fat. a 16650 may work in it. ill do a little more searching in a little bit see what i can find
Ye, i was thinking that would be the safest option. Though i would like to verify if a 18650 would fit, because as i scanned through some posts, these batteries last longer, even if the power could be slightly decreased. What is your opinion of the flashlight generally? Cause if you ask me, it’s damn bright :bigsmile: !
Aight man, thanks a lot for trying.
just going by nominal voltages, cr123 would be 6v to the driver, rcr123a li-ion would be 8.4v and lifepo up to 7.2v.
using a 16650 or a 17650 would be 4.2v, but the driver may or may not be able to handle the lower voltage.
if you have some calipers you could measure the inside of the battery tube to see if an 18650 would fit. if its larger than 18mm it should be able to fit an 18650. whether or not it will power the light would be a different story. worst comes to worst, you had already bought 18650s and a charger, and would need to buy a light for that 18650 
im not sure about that light, never heard of them before
Ok then, thanks a lot for your help! I guess i’ll just buy 2xRCR123a 3V to be sure it won’t have any problems. Cause buying disposable ones will cost me a fortune! Thanks again people.