What is the highest capacity 18650 rechargeable battery that will fit in this beauty? I've saw talk of the 3100, is it true that the 3400 won't fit? Batteries...what are the best recommended and charger for a price that won't break the bank? Saw someone talking about Nitecores batteries are hit and miss and a lot of times they won't fit the lights. What is the highest capacity 18650 rechargeable battery that will fit in this beauty? I've saw talk of the 3100, is it true that the 3400 won't fit? Batteries...what are the best... » Read More What is the highest capacity 18650 rechargeable battery that will fit in this beauty? I've saw talk of the 3100, is it true that the 3400 won't fit? Batteries...what are the best recommended and charger for a price that won't break the bank? Saw someone talking about Nitecores batteries are hit and miss and a lot of times they won't fit the lights. « Show Less
1966843
Orbtronic 3400 mAh will fit. There charger comes in Kit with two 3400 18650 rechargeable batteries.
1966844
The highest capacity 18650 is 3400mAh on the market. I am using Protected 3400mAh 18650 Li-ion Rechargeable Battery-Cell Panasonic NCR18650B- Orbtronic, it fits my Nitecore EC25. I like my battery charger, Nitecore i4 Intellicharger, and it charges difference size of batteries at the same time, AA, AAA, 18650 or RCR123A. I am also using Nitecore NL183 2300 mAh with my EC25. I never try Nitecore battery with other flash light, therefore I cannot tell you about it.
1966845
I use a 3100 haven't tryed a 3400. I also use the nitecore 18650 they work great as for the charger go to battery junction that's where I get all my flashlights needs I hope this help
1966846
I got the "UltraFire 18650 3000mAh 3.7V Rechargeable Li-Ion Battery + Charger Combo" the battery life is last a long time. Sure you can get a battery with more mAH. It will last longer you will have to pay more. The combo is a good starter kit. If you use the light every day. Buy the better charger and battery. Ps. Love the Niecire ec25 it puts out a ridiculous amount of light.
1966847
I used the Tenergy 18650 battery and charger combo. So far I have used the light once to scan my backyard and the output of the was fantastic.The fit of the batteries were no issue at all. I have the spare one charged and stored for over 3 months, took it out and the voltage drop was negligible.I will test the battery again in a few weeks a see what voltage drop I have.As far as the light goes, it was a good buy and I highly recommend the Tenergy battery charger combo to get started.
1966848
I have used Eagle-Tac 3100s in these (I have two) with no problems. 3400s might be a bit tight depending upon the brand. I have two of the Nitecore Intelli-Chargers (1 - 2 bay, 1 4 - bay) and they work fine for different types of batteries. I have some of the Nitecore batteries (2300, 2600) and they have been fine also but with the lower capacity. Hope this helps.
1817099
An 18650 rechargeable. Do not put 2 18350's in there. They will fit but it will destroy the light.
2069497
18650s four each make sure you buy the batteries with the internal protective circuit in it for safety's sake. My recommendation would be: Welltop® 4Pcs 3.7V 18650 5000mah Rechargeable Lithium Battery with Battery Charge+ Free Welltop® Corkscrew. This a Prime so shipping is free. These have the extra power and the internal protection, the quantity you need and a charger = Great Deal, Enjoy.
1428446
I really don't understand why everybody keep saying that a 18650 battery won't fit??....I have few 18650 batteries and yes, THEY DO fit in the tube of my PC20, NOT slightly big or small, they fit perfect and the light works great, I've being using 18650 battery since I purchase the light.
359233
I use orbtronic protected 18650 3100 mah cells. With my PD35 on setting two they will last a minimum of 15 hours runtime. These are top of the line panasonic cells with Orbtronic circuit protection. Great batteries, store welll. Come with plastic storage cases so you do not have to purchase seperately. Rated 3100 mah but testing at home shows they have a 3200 mah capacity. You can get two for around 25. You get what you pay for. Not all batteries are created equal, regardless of claims. These are some of the best on the market, worth every penny. I found the higher capacity 3400 mah orbtronics fit very tight in my pd35 so I went with the 3100 mah and it fit perfect. I use orbtronic protected 18650 3100 mah cells. With my PD35 on setting two they will last a minimum of 15 hours runtime. These are top of the line panasonic cells with Orbtronic circuit protection. Great batteries, store welll. Come with plastic storage cases so you do not have to purchase seperately. Rated 3100 mah but testing at home shows they have a 3200 mah capacity. You can get two for around 25. You get what you pay for. Not all batteries are created equal, regardless of claims. These are some of the best on the market, worth every penny. I found the higher capacity 3400 mah... » Read More I use orbtronic protected 18650 3100 mah cells. With my PD35 on setting two they will last a minimum of 15 hours runtime. These are top of the line panasonic cells with Orbtronic circuit protection. Great batteries, store welll. Come with plastic storage cases so you do not have to purchase seperately. Rated 3100 mah but testing at home shows they have a 3200 mah capacity. You can get two for around 25. You get what you pay for. Not all batteries are created equal, regardless of claims. These are some of the best on the market, worth every penny. I found the higher capacity 3400 mah orbtronics fit very tight in my pd35 so I went with the 3100 mah and it fit perfect. « Show Less
762523
I have two separate brands of these. One brand (Tangsfire) is a few mm's longer than a no brand 26650 rechargeable battery (both purchased off Amazon). The Tangsfire being longer, do charge but I have to spin them and adjust till the charger light comes on. Also, my flashlight does not work with the longer Tangsfire batteries UNLESS I unscrew the endcap some, that is, loosen the end cap. So the Tangsfire are too long, it seems. If you get a shorter 26650 I think you'll not have the problem (hassle) the longer Tangsfire cause. I just reread your question about Ultrafire brand. I don't know about them but suppose they might be long, also. I have two separate brands of these. One brand (Tangsfire) is a few mm's longer than a no brand 26650 rechargeable battery (both purchased off Amazon). The Tangsfire being longer, do charge but I have to spin them and adjust till the charger light comes on. Also, my flashlight does not work with the longer Tangsfire batteries UNLESS I unscrew the endcap some, that is, loosen the end cap. So the Tangsfire are too long, it seems. If you get a shorter 26650 I think you'll not have the problem (hassle) the longer Tangsfire cause. I just reread your question about Ultrafire brand. I don't know... » Read More I have two separate brands of these. One brand (Tangsfire) is a few mm's longer than a no brand 26650 rechargeable battery (both purchased off Amazon). The Tangsfire being longer, do charge but I have to spin them and adjust till the charger light comes on. Also, my flashlight does not work with the longer Tangsfire batteries UNLESS I unscrew the endcap some, that is, loosen the end cap. So the Tangsfire are too long, it seems. If you get a shorter 26650 I think you'll not have the problem (hassle) the longer Tangsfire cause. I just reread your question about Ultrafire brand. I don't know about them but suppose they might be long, also. « Show Less
734060
This light should always be used with protected 18650's, I use the protected Panasonic 3400 Mah cells from international outdoor and couldn't be happier.
1023362
18650 DOES NOT fit (Raj from Chicago is CORRECT). 14500 battery is the rechargeable battery that fits these lights.
812317
From my experience with Trustfire and other *fire batteries in the past, you can usually halve the mah claims, so these would probably be much closer to 2500mah than 5000mah, so I would guess that Orbtronic 3400s would last longer. Neither Orbtronic nor Panasonic inflate their mah, assuming you get authentic ones.
770377
A recommendation about batteries: For flashlights, the newer type of rechargeables, the low-self-discharge (LSD?) type are great. They can sit in storage for years, while keeping most of their power. And they can be recharged hundreds of times, with no 'memory effect'. To see an example, do a search on Amazon product ID number B00JHKSMJU (Panasonic Enloop). They are also built sturdier, to avoid leaks. The downside is that they were more expensive to buy (and I had to buy a compatible charger too), but am saving money in the long run.
799809
Usually these flashlights that specify 18650's will also take two 123a's in series. The electronics makes the adjustment.And 123a's also have a cousin the same size that is rechargeable.And remember the universal rule of Li-ion batteries; the cheaper and more off-brand that you buy, the bigger the mAh rating lie!General rule for 18650's is that none will ever actually test over 3400 mAh.
1099171
This particular flashlight requires a #18650 lithium-ion rechargeable battery. When you purchase the battery, try to get a combo deal where you can get two batteries AND a charger. I also suggest you seek a high mAh. battery as it will give you longer performance time and if needed, you'll have the second battery as backup.
2040011
We are lucky if the rechargeable batteries last 3 hours...so very annoying. I started doing a little research and found that these rechargeable batteries are the best on the market : eneloop AA 1800 cycle, Ni-MH Pre-Charged Rechargeable Batteries, 4 Pack (discontinued by manufacturer) Anyone have any experience with them?! They have really good reviews. I'm wondering if I do get them if I should get a better battery charger, if it really matters at all?!
32719
Just got mine today. Haven't tested actual capacity but with 18650 batteries inside it looks that is actually probably around 15,000 mah. I'm going to test by fully discharging a device that is 5000 mah. If i can't get enough recharges to be impressed I'll be returning mine.
1490259
18650 (A or B) aren't charged in the device. They are high power batteries that should be charged in a stand-alone charger that "conditions and maintains" the battery to prevent premature failure and ensure a proper load. If not charged correctly, these batteries can fail DRAMATICALLY. I use the Xtar VP1 chargers because they bring the battery down to an optimum level before charging them all the way up to the full 4.2 volts. The charger also maintains a steady charge rate and has a digital display of the voltage. Great little charger that protects these very expensive batteries. There are, of course, several other brands/models that also charge and maintain 18650 batteries. The Xtar is just my favorite. I have two Sky Ray Kings and tons of other CR123 and 18650 battery operated lights. Sort of a hobby/addiction/money hole! :)
2003549
I recommend the Orbtronic 3,400mAH 18650 rechargeables and the Intellicharger i4 version 2. The Orbs are quality Japanese parts batteries and all 6 of mine charge to exactly the same 4.7 voltage every time and they seem to last forever. The Orbs are also have been rated top marks and fit this flashlight well. Keeppower is the only other one that is about as good IMHO.
1587983
If you gave a specific model for the flashlight, I'm sure we could answer this question better. The answer, given the limited information given, is "maybe". There are a couple things to consider. First, CR123s are narrower than 18650. CR123 are 17mm wide (diameter), and 18650s are usually a little over 18mm wide (diameter). So a light that is sized exactly for CR123 will NOT fit 18650. Many lights are sized large enough to accommodate both types, though, so it MIGHT work. The second consideration is voltage. CR123s are 3V, and they maintain that voltage right up until they are almost dead. 4 CR123, then, will deliver 12V for the whole of the battery life (not exactly, but close enough for our purposes.) Two 18650s will deliver only 8.4V, even when fully charged and under light load. If you ask for high current, the voltage will sag even more. And as lithium ion rechargeables are used, the voltage declines. At 50% capacity, they will be down to somewhere between 3.6-3.7 volts each, or 7.2-7.4 volts total. The question is, then, can the driver in the light compensate for the lower voltage of the 18650s, or not? Some lights can, and others can't, but without knowing the exact light you have, there is no way to be sure.