By reading enough on-line reviews, all saying the same thing.
That is not so clear from the reviews that I read. All they mentioned was that the 2-cell version is not designed to operate with 1 cell. It’s not clear whether the flashlight would simply be underdriven (i.e., beam would be not so bright) or whether the Vf threshhold wouldn’t be met (i.e., beam wouldn’t turn on at all).
Anyone happen to know if the 1 or 2 Cell version can run on 18650 ?
Reference: http://m4dm4x.com/2015/06/08/review-of-shadow-jm35/
The one cell version can work with an 18650, provided you use an unprotected high drain cell.
The two cell version works with most good quality 18650 cells, protected or unprotected.
Of course, you’ll need some sort of 18650-to-26650 adapter (O-rings, toilet paper roll cut-out, etc.).
Thanks, I may give one a try
I posted this in the review thread but didn’t get a response yet so I’ll try here…
… I am glad to learn that this is a floody light. My main use will be for inline skating on dark streets so I need to light up a wide area of the road in front of me.
I am now trying to decide between the MT-H2 and XHP-50 emitter. I want the light to make hard to see obstacles like potholes and small debris immediately visible obviously. Based on the outdoor beam shots, it seems the tint on the XHP-50 makes objects stand out a bit more. Would you folks here agree?
Edit: Also, will a high current 26650 battery like the Keeppower 4200mAh (30A) make a big difference in this light? If not I will go for a higher capacity 20A battery like the Vappower 5200mAh.
mine arrived back in December. I really like the light, especially the tint and output for a small single cell light. The run time on low is impressive with a 4000mah protected 26650, i got 12 hours continuous of roughly 200 lumens of light, before it began to dim substantially. with lots of usable light for a full weekend of camping use on a single charge.
Assuming that you’re talking about the MT-G2 (5000k) and the XHP-50 (6000K) versions of the Shadow JM35, then yes, I would tend to agree with you.
My thoughts are that inline skating conditions are somewhat similar to bicycle roadway riding conditions. And my understanding from discussions with bicycle riders is that they find cool (1A) tints better for highlighting contrasts.
Any good quality 26650 cell will do fine, they pack way more punch that 18650’s. It’s only if you intend on powering the flashlight using an adapter do you need to worry about using high-drain 18650 cells.
Edited per post no. 27, below.
Did people ordering the 2-cell JM35 from banggood get the correct LED?
I’ve seen numerous reviews stating they are sending out the wrong LED’s to people.
I ordered an MT-G2 version on 11/27/15.
I received an MT-G2 version on 12/10/15.
No problemas.
Alright thanks, hope I’ll be lucky as well. Placed my order today for the MT-G2 version.
Very useful info — thanks 1dash1.
BTW, I don’t know whether these can be shipped to your location (please update your profile 
), but there’s a sale going on for Basen 26650’s, $7.80 each.
1dash1, can you elaborate on your statement of “Any good quality 26650 cell will do fine, they pack way more punch that 18650’s”?
Because I have found that there are very few 26650’s out there that can deliver higher current to an FET driven emitter, be it XM-L2 or MT-G2 or XHP-70, than the top 18650’s. Run time, yes, “punch” (translated to power) no.
2-cell light requirements don’t usually tax any cell, they’re just not typically pulling enough amps to warrant top cells in most cases. An MT-G2 direct drive on 2 cells can do about 16A, if I recall correctly. Difficult to find 26650’s that’ll do that. I know some things have been changing recently and there’s a few new players in the fat cell game, whether they meet or exceed the top dogs in the 18650 format I can’t say at this time. Maybe it’s time to do some new testing… Basen cells on the way, 4200mAh Efests in hand.
Edit: Not trying to be argumentative, just wondering if I’m missing something…
I agree too, i haven’t found any 26650 cells that can shove amps like a 25R or 20R , but the run time (capacity) the 26650 has the advantage. ( with 5000mah averages higher than the best 3500mah 18650) i don’t think any manufacturer built ( or had the need to build) a 26650 cell for high current/drain applications.
Dale, DBSAR:
I based my comments on anecdotal reports of what cells worked with the JM35 (1x26650/1x18650 version), such as M4D M4X’s review.
Regarding 26650’s packing more punch, I recall a discussion on this matter 4 or 5 months ago. I think it started off with a poll, asking to guess which would perform better under a certain circumstance. I tried doing a couple of searches for the discussion, without luck. I’ll keep on searching…
I’m getting 3.99 amps on a new brown HG2 and 4.02 on a 26650 gold 4000 mAh King Kong. Both unprotected. JM35 MT-G2. No driver spring mod. No laughing at my ghetto 12g probe wires. 
w/HG2 16250 candela
w/KK 16500 candela
Profile updated (Thailand currently but will be back to Canada in a few months). Thanks for this. Unfortunately at this time Li batteries cannot be shipped to Thailand or most anywhere else. Apparently a worldwide ban on shipping Li batteries started a few days ago with the exception of very few countries. I spent the last several hours shopping for batteries only to find this out.
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I have some Samsung 30Q which are rated for 15A continuous but are known to reach 20A no problem. So the JM35 should perform ok with these, right?
Perhaps it’s a good thing that I have not been able to order any 26650s, since the cells inside are not from any of the top tier manufacturers.
The 30Q will power the JM35 with no problem with a spacer, but the run times will be less than that of a good high capacity 26650. I have run my JM36 on both 20R & 25R cells, but never tried the 30Q yet, but it would run as the 30Q is a high-drain cell too. I seem to like running my JM35 with a good protected EVVA 4000mah 26650 or Keeppower protected 5200mah 26650 cell because of the higher capacity than any 18650 can provide. Though I am unsure if there are any good “protected” 18650 cells out there capable of sustaining the amps needed on high. (some other members on the forums here can likely better answer that for you.
Thanks Den. Good to know I don’t have to chase down a 26650 until this shipping ban is lifted.
Reference:
After much searching, I couldn’t find that discussion I was talking about. The only documentation that I could find was this one:
Included in that discussion was the following observation [link]
Other than that, I found numerous discussions that spoke anecdotally (general opinion, not specific examples):
- Voltage sag is lower for a 26650 than an 18650.
Given the lack of proof, I’ve gone back and edited my original comments.