How many minutes would the ultrafire 18650 battery deliver on the highest mode?
That is going to depend on the actual capacity of the battery. Usually the marked capacity will be inflated on xxxxFire branded lights.
I have a 3000mAh ultrafire. Would that translate to about an hour on high?
I’d guess that the light would remain in high mode for about an hour, but the actual output will begin to drop after 15-20 minutes. As the battery voltage drops, so does current. This will extend runtime, but not at full output.
The light begins to drop out around 3.7-3.8V, meaning as long as the battery remains at or above that value there will be full output. Under that, it will be less than full output.
Also, because the output decreases gradually you may not notice until it gets down to about half output or less.
Those TF are crap, sorry man.
Agent80,
I have 1 or 2 of those ultrafire batteries that are ok, quality seems to vary. I have not tested these batteries in my c8, but I would guess about an hour, if its a fairly decent battery. I recently tested a panasonic unprotected 2900mah, and got about 1hr 20 min. Nice thing is the light starts blinking when voltage gets low, I think battery was at 3.2 volt,IIRC.
I bought a “Raptor” battery from the local( South Africa) Chinese shops,( Latest cheap Chinese offering?) which says 3800mah, weighs 31 g, whereas a decent battery weighs in around 45g, and it lasted 20 mins in the c8.
So battery quality will make a huge difference…
Hmm any discount on the XinTD C8 V4? its 30$ not exactly cheap…
trust me, the xinTD is worth it. if you have more expensive lights you will appreciate the quality of it for the price.
All what i care is decent build quality and solid output. Is the XinTD 12$ better then Convoy M1 which is already great? if it is, i might take it into consideration.
The Convoy is just over $15 with BLF code. The XinTD is about $14 more. I do not have the XinTD, so I cannot compare, just find it difficult to believe that the XinTD could be $14 better than the Convoy.
Thanks, i tought the same.
BTW what do you mean by 15$ never saw price like that for the M1 2.8A U2.
Well I don’t know about the M1, but I would say there is not an enormous difference between the convoy and xinTD. Both are very good.
XinTD has a proprietary smooth reflector for improved throw and also has more options for modes and emitters. If you are a tint snob, the TD is the ticket. The xinTD has better feel and looks purdier. Not sure how much that matters to you…
If all you want is a good quality, basic, C8 the convoy should do fine. The xinTD is slightly better in quality, design, and performance, but it sounds like you would probably be very happy with the convoy. For $15, its pretty hard to beat bang for buck.
That being said, I don’t regret my TD v3 one bit. It remains one of my favorites.
Thanks for the info man, yea i like basic flashlight something like edc with powerful output good cooling - driver on cheap, for the price of XinTD i can buy 2x M1 and the difference for my usage will be minimal, and ye i’m not tint snob, thanks one more time for your help!
The Convoy C8 as reviewed is still $15.68 after BLF code at FT. The XinTD is $29.95. Difference is $14.27, I rounded the difference to $14. Not sure why you mentioned the M1, we be talkin’ ’bout the C8 
Great review!
It motivated me to buy the smooth reflector version of the light, and I was not disappointed!
Very beautifully made! 
With a dedomed XM-L the hotspot is just about ~1,8…2m diameter at 50m distance.
I am hoping for lots of clouds on new moon to try it out. It’s just to bright at night at this time of the year to really enjoy flashlights.
If you care: some beamshot from 4m away (I only have my phone as camera, so outdoor shots won’t be nice to look at. ;-))
The round hotspot on the right is from the C8, the yellow quare is a sk68 with dedomed XP-E and the big square is with a normal XR-E.
I think I’m going to really like this light!
Wow! That is a compact hot spot for an XM-L C8. The dedoming is working well there. Maybe I will jump for the Convoy C8 host and put a dedomed XM-L2 in there. Hmm…
By proprietary I meant unique to XinTD. There are dozens of smooth XML C8 reflectors around. (You can even buy replacements.)
XinTD’s reflector is unique becase it’s shaped differently. Slightly deeper, supposedly… This is all according to Intl Outdoor. They used to have a comparison pic on their page for the V3, but I did not see it on the V4 page. (it’s also a screw-in type FWIW)
The sales pitch is it gives better throw. I have not seen anyone measure it though. I’m sure the difference is not huge because the reflectors are not extremely different.
Now, with that cleared up…. I have another question. Did not see it mentioned so hoping someone can answer…
Does anyone know the voltage range of these Convoy C8s?
Do they have a low shut-off or warning?
Can they take 2x CR123A primaries? Or how about 2x 18350 (probly not)?
I heard that they could take 2X cr123's somewhere on here and then I heard that they would work but would 'burn up' if pushed to 6V for a prolonged period of time.
I have no first hand knowledge!
They use a standard NANJG 105C, so in theory it is 2.8-6.0V.
They do have a low voltage warning, somewhere around 2.8 to 3.0V. IIRC.
There are reports that this driver runs very hot on 2xCR123A.
2x18350 has bee tested by a few members and is shown to work for two emitters in series (or one MT-G2). It will not work for a single emitter, as the voltage drop is too high and will like damage the driver.
I lost my first one so just got another Convoy C8 host. I cannot remember how I grounded the driver to the pill as the pill is aluminum. Using the direct drive PCB the seat does not tighten down enough to make contact, so I have to figure something else out, maybe I’d have a better fit with a Nanjg 105c driver. ANy grounding suggestions would be appreciated.