instead of "18650 3.7v Battery", can I use AA or AAA regular battery?
1352165
The AA or AAA batteries are of a different size and shape and the voltage is different. I found that you can order conversion kits, but the reviews on them are not good. The 18650 battery holds a charge for a long time and I find it quite convenient. I keep a second battery charged at all times in the event I need to replace.
1352166
I believe you can use AAA's but using those will deminish the brightness considerably. And it will use them up very quickly.
1352167
No, it wouldn't be the right size for the canister, both of those would be too small and wouldn't touch both contacts at the same time.
1352168
no, you must use the 18650, you can also use 2- 123cr batteries, but i would stay with the 18650.
1352169
No. You would need 3 in series to get the right voltage, and that won't fit. But if you have an old "dead" laptop battery, try opening it up; they are usually full of ~6 of these 18650s, and usually it's only 1 that's gone bad. You will need a charger, though, and a good one. Tenergy makes a good one, that charges up to two cells independently (that's important for lithium batteries!!); it's ~$40 and comes with 2 high-quality 18650 batteries, so you don't really need to mess with the old laptop after all.
1352170
That's one downside here. AA's are too small. An alternate is the C123. That will be a pricey alternative because the XMLT6 will gobble them up. Go with the rechargeables.
1003476
No. LED flashlights that advertise as being able to use 18650 and AA use a adapter to bring the AA up to the larger 18650 size.
2043424
No the 18650 is too large the 14500 will work as well as 1 AA battery. I have several of these flash lights, buy it you'll love it.
1553199
Just regular AA but you could buy lithium or rechargeable batteries as long as you have a charger for them.
521072
I agree with Paul Moll, I bought the 18650 Batteries thru amazon and they are better than the AAA batteries. Idk how this worked but, when I used the AAA batteries I only had one mode, but when I used the 18650 battery all modes were accessable.
2230689
Use regular AAA batteries. These are not the greatest quality of lights, I have several that have not worked and several that have stopped working.
1376688
I use regular AA batteries all the time. Never purchase expensive rechargeable batteries.
1481621
Yes. Standard AAA batteries will not work. Had I known this would not have bought the light.
1023364
18650 is 4mm thicker, and 15mm longer than AA according to what I read. There does not appear to be any extra space in the flashlight battery compartment. I would say no. The 18650 will not fit.
974341
The correct battery is the 18650. You could also use two CR-123 batteries instead. Either will do the job.
1661062
I have a lot of different UltraFire flashlights. All are very bright. if the model does not use the 3.7V Lithium battery, the model is designed for three AAA batteries. I never saw a model that uses AA batteries.
134518
Not this specific charger and battery but just search for 18650 3.7V batter and charger and you will find one that works.
337227
I actually didn't use rechargable. I used regular AA and it worked perfectly for me!
543228
Regular aa's will work but I used rechargable. I do not recomend this product
2140773
No. An 18650 is a rechargeable battery that takes the place of two CR123A batteries
1661061
No dude you need the 18650 batteries. The regular aa batteries are too small. The 18650 batteries are fatter and more powerful. The good thing is that it only requires only one 18650 batteries and they are rechargeable. My suggestion would be to buy a pair with the wall charger, and Carry the second battery as a backup or replacement.
605529
Yes, you can use the 3.7v. I use a rechargeable 3.7v, and it actually produces a brighter light than a standard AA lithium.