JM-35 owners

[DBSAR]

@DB Custom

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.

[1dash1]

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…

[jhalb]

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

[kbear99]

@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.
ENEDED

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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@DBSAR

@DB Custom

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.

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.

[DBSAR]

@kbear99

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.

[kbear99]

Thanks Den. Good to know I don’t have to chase down a 26650 until this shipping ban is lifted.

[1dash1]

Reference:

@1dash1

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…

After much searching, I couldn’t find that discussion I was talking about. The only documentation that I could find was this one:

Surprising battery results 26650 vs 18650

I just did some draw tests on a KD C8 XML and the F13 Xm-L2 clone OL recommended. I was quite surprised that the 26650 preformed this much better than 18650 cells. The batteries were all charged to 4.18-4.2v and had been off the charger for a few hours. I used my Opus charger to check battery resistance, all the 18650 tested between 105-140. The 26650 tested at 80 (Maybe this why they pulled more?) The 26650’s and the Panasonic NCR18650b are brand new, and who know about the laptop pulls. I a…

Included in that discussion was the following observation [link]

@tryps

If you’d like to compare amp/volt graphs from 26650s and 18650s you may consider dampfakkus.de - pretty self explaining. They have a good selection of high amp 18650 and 26650 with 2A 3A and 5A discharge graphs. It just shows the huge benefits you get from 26650 in single cell aplications.

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.

• If cells were the same chemistry, the larger cell will have a higher capacity and a higher discharge rate.
  What gives highest power on a 26650 flashlight - 26650 battery or 18650 battery?
  what is the difference between 26650s and 18650s
  Best 26650 (or even 18650) For High Current & Maintaining Voltage
  https://www.reddit.com/r/RBA/comments/2u3wxm/26650_vs_18650_notorious_mod/
  26650 vs 18650 power | E-Cigarette Forum
  18650 vs 26650 complete comparison | E-Cigarette Forum

Given the lack of proof, I’ve gone back and edited my original comments.