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Posted: 11/16/2018 7:22:06 PM EDT
[#1]
Quote HistoryQuoted:
They are starting out by sending me a new battery which, honestly, might be it. I pulled it out this morning and turned it on. Didn’t die. Just ran and ran. I wonder if it was over volted coming straight off the charger? |
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Posted: 11/16/2018 8:25:44 PM EDT
[#2]
Quote HistoryQuoted:
If you have two, why not just try it with the battery from the working light... |
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Posted: 11/16/2018 10:19:17 PM EDT
[#3]
Those of you with troubles, what charger are you using?
Ask because I tried the charger that came with the light from Surefire, and I unplugged it after about 20 minutes, due to it and the battery getting hot (not thrown it away yet, but not planning on using it anymore). Put the 18650A in my trusty Nitecore D2, charged up properly with no heat, never had issues with the light. |
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Posted: 11/16/2018 10:52:07 PM EDT
[#4]
Quote HistoryQuoted:
Those of you with troubles, what charger are you using? Ask because I tried the charger that came with the light from Surefire, and I unplugged it after about 20 minutes, due to it and the battery getting hot (not thrown it away yet, but not planning on using it anymore). Put the 18650A in my trusty Nitecore D2, charged up properly with no heat, never had issues with the light. |
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Posted: 11/17/2018 6:37:05 PM EDT
[#5]
Read the fine print if you planned to use this mount for the M600DF. Magpul Scout Mount It will not work with the dual fuel. I badly wanted to mount the light with this mount but now will be using the regular rail mount.
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Posted: 11/17/2018 8:32:34 PM EDT
[#6]
I didnt see it mentioned anywhere in this thread, is the color tint of this light very warm?
My M300 is very neutral and this thing is very orange/yellow. Not a big deal but side by side the two are very very different. |
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Posted: 11/17/2018 9:05:55 PM EDT
[#7]
Quote HistoryQuoted:
I didnt see it mentioned anywhere in this thread, is the color tint of this light very warm? My M300 is very neutral and this thing is very orange/yellow. Not a big deal but side by side the two are very very different. |
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Posted: 11/18/2018 1:57:44 AM EDT
[#8]
I’ve been messing around with the “bad” battery. At least that’s what Surefire is trying first by sending me another.
Except it ran for almost an hour in my olight warrior m22. And the good battery in my tan DF dudnt make a difference when I put it in my black DF. It still cut out after about.....7ish minutes. At this point I know it’s the light itself. I emailed the guy I’ve been talking to at Surefire. See what he says Monday. |
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Posted: 11/18/2018 6:46:34 PM EDT
[#9]
Quote HistoryQuote HistoryQuoted:
Quoted:
I didnt see it mentioned anywhere in this thread, is the color tint of this light very warm? My M300 is very neutral and this thing is very orange/yellow. Not a big deal but side by side the two are very very different. |
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Posted: 11/18/2018 7:00:35 PM EDT
[#10]
This isn't GD
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Posted: 11/19/2018 3:17:48 PM EDT
[#11]
Update.
I told the guy I switched batteries and the supposed bad battery was fine in my other 600df AND my olight m22. Then I took the battery out of my good 600df and put it in the bad 600df and it cut out. So I know it’s the light. I tell all of this to the guy I’m emailing at Surefire. So what do you think he said this morning?: If the light is becoming very hot and it cuts out then it could be associated with either the LED's voltage regulator, or the battery's safety cut off chemistry that Panasonic built into it. The issue might likely be in the battery to be honest. So either he didn’t read the other emails I sent to him or he is going by a step by step process which they have to go through that they must think saves them money but so far it’s cost them a battery and I know that won’t fix it. So I’m getting garbage warranty service from Surefire. I might just return this thing and buy another one and hope it works. |
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Posted: 11/23/2018 7:16:50 AM EDT
[#12]
Quote HistoryQuoted:
Which models of Surefire failed you? There are only a handful of actual WML companies. Streamlight is trash. You do the math. Quote HistoryQuoted:
Quoted: I drank the Surefire Kool Aid for years, I have over $2,000 worth of Surefire lights..,,,NO MORE! There are only a handful of actual WML companies. Streamlight is trash. You do the math. Why is Streamlight trash? I'm considering a 1,000 lumen HL-X, as a stop gap until I get a Surefire. Is there a reason I shouldn't? |
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Posted: 12/6/2018 6:43:45 PM EDT
[#13]
Update number 2. Light is still at Surefire. They got it last Thursday. I still haven’t heard anything. A week. Nothing.
I’m trying to be reasonable but not super happy right now. This is why competition is good. If there was a true competitor to Surefire I’d probably switch over. Let me clarify that. I realize there are lights out there just as durable. But they don’t have the support for switching or mounting like Surefire does. If only elzetta made a tailcap that was compatible with Surefire switches or if only Arisaka made a brighter light. |
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Posted: 12/6/2018 8:28:12 PM EDT
[#14]
Quote HistoryQuoted:
Update number 2. Light is still at Surefire. They got it last Thursday. I still haven’t heard anything. A week. Nothing. I’m trying to be reasonable but not super happy right now. This is why competition is good. If there was a true competitor to Surefire I’d probably switch over. Let me clarify that. I realize there are lights out there just as durable. But they don’t have the support for switching or mounting like Surefire does. If only elzetta made a tailcap that was compatible with Surefire switches or if only Arisaka made a brighter light. |
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Posted: 12/6/2018 8:48:44 PM EDT
[#15]
Quote HistoryQuoted: if only Arisaka made a brighter light. |
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Posted: 12/6/2018 8:51:27 PM EDT
[#16]
Update 3
Just got an email after I said F it, it’s been a week I’m going to ask. I get a reply that they are sending me out a new one but for whatever reason tracking isn’t available right now. |
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Posted: 12/15/2018 5:25:32 AM EDT
[#17]
I definitely dig my M600DF.
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Posted: 12/17/2018 1:04:29 AM EDT
[#18]
Update 4
Been over a week since “being sent a new one, no tracking available” I have no idea where it is or if they even sent it yet. Terrible. |
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Posted: 12/17/2018 3:12:44 AM EDT
[#19]
I got my personal light in yesterday and we got 4 for some duty rifles at work. So far all work and are super bright. I have the 500 lumen m300 and the m600df is way brighter.
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Posted: 12/17/2018 3:36:46 AM EDT
[#20]
Quote HistoryQuoted:
Update 4 Been over a week since “being sent a new one, no tracking available” I have no idea where it is or if they even sent it yet. Terrible. I've ordered direct from them before without issue but last month I ordered a couple of their 18650 batteries since I have so many DF lights now. I think they didn't even ship for 8 or 9 days. I asked for a status update and didn't get it until 2 or 3 days after it shipped. By the time I got tracking it was the day they showed up on my doorstep. |
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Posted: 12/17/2018 12:00:26 PM EDT
[#21]
Quote HistoryQuoted: Their shipping/tracking IS shit, I'll give them that. I've ordered direct from them before without issue but last month I ordered a couple of their 18650 batteries since I have so many DF lights now. I think they didn't even ship for 8 or 9 days. I asked for a status update and didn't get it until 2 or 3 days after it shipped. By the time I got tracking it was the day they showed up on my doorstep. Think I’m just going to not send it in for now. |
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Posted: 12/17/2018 7:54:40 PM EDT
[#22]
edited - sju
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Posted: 12/18/2018 12:22:03 AM EDT
[#23]
edited- sju
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Posted: 12/18/2018 1:01:27 AM EDT
[#24]
I had a Surefire M952 that would flicker, I called Surefire Customer Service for an RMA.
They told me to “Just stretch the spring, that’s all we are going to do”. 
As most of us are aware, that’s a temporary fix. It did correct it for awhile. |
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Posted: 12/18/2018 10:32:00 AM EDT
[#25]
Quote HistoryQuoted:
I had a Surefire M952 that would flicker, I called Surefire Customer Service for an RMA. They told me to “Just stretch the spring, that’s all we are going to do”.
As most of us are aware, that’s a temporary fix. It did correct it for awhile. |
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Posted: 12/18/2018 10:56:24 AM EDT
[#26]
I picked up a 600DF the other week. Using SF's supplied rechargeable battery, sure enough, after about 2 minutes of 'on,' the light would shut off.
No issues using SF 123A batteries. I called Surefire and they admitted there was a known issue with a batch of batteries. They immediately sent a new battery. Had it running now with the replacement battery for 20 minutes and seems to be working fine. Then, just to confirm, I once again tried the original battery and it shut off within 2 minutes. Original (bad) battery production date 06/18 Replacement (good) battery production date 10/18 |
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Posted: 12/18/2018 1:43:00 PM EDT
[#27]
Quote HistoryQuoted:
I picked up a 600DF the other week. Using SF's supplied rechargeable battery, sure enough, after about 2 minutes of 'on,' the light would shut off. No issues using SF 123A batteries. I called Surefire and they admitted there was a known issue with a batch of batteries. They immediately sent a new battery. Had it running now with the replacement battery for 20 minutes and seems to be working fine. Then, just to confirm, I once again tried the original battery and it shut off within 2 minutes. Original (bad) battery production date 06/18 Replacement (good) battery production date 10/18 But at least I got a free 18650 out of it. Rather have a functioning light...... |
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Posted: 12/19/2018 5:21:47 PM EDT
[#28]
I wonder if I never had any problems with both of mine because I never used them with the supplied tailcap?
I put DS07s on mine right out of the box. |
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Posted: 12/24/2018 6:00:34 PM EDT
[#29]
Quote HistoryQuoted: Their shipping/tracking IS shit, I'll give them that. I've ordered direct from them before without issue but last month I ordered a couple of their 18650 batteries since I have so many DF lights now. I think they didn't even ship for 8 or 9 days. I asked for a status update and didn't get it until 2 or 3 days after it shipped. By the time I got tracking it was the day they showed up on my doorstep. Wife just gave me an early Christmas present (18650 and charger) and she told me she never got tracking info or even order confirmation. Funny thing is I don't even have a 18650 light... Guess I'll be looking into the M600DF in the near future. |
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Posted: 12/24/2018 10:30:42 PM EDT
[#30]
Update 5
Got it back. Been running nonstop for 10 minutes. So far so good. Good news is it no longer flickers during dry fire or dropping the bolt home. One caveat. When I got it I took the battery out and I’m charging it. It has a date of 0618 which supposedly is the time of the bad batch. I’m running a newer 1018 Surefire battery to test the light. Once I’m happy with the light I’ll do another test with the 0618 battery. |
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Posted: 12/24/2018 11:59:52 PM EDT
[#31]
Quote HistoryQuoted:
I picked up a 600DF the other week. Using SF's supplied rechargeable battery, sure enough, after about 2 minutes of 'on,' the light would shut off. No issues using SF 123A batteries. I called Surefire and they admitted there was a known issue with a batch of batteries. They immediately sent a new battery. Had it running now with the replacement battery for 20 minutes and seems to be working fine. Then, just to confirm, I once again tried the original battery and it shut off within 2 minutes. Original (bad) battery production date 06/18 Replacement (good) battery production date 10/18 
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Posted: 12/25/2018 2:15:18 PM EDT
[#32]
Quote HistoryI don’t think it’s every single battery. I’ve got an 0618 and 0318 that are good.
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Posted: 12/25/2018 4:16:37 PM EDT
[#33]
Quote HistoryQuoted: I don’t think it’s every single battery. I’ve got an 0618 and 0318 that are good. |
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Posted: 12/25/2018 4:38:26 PM EDT
[#34]
If anyone has one of the defective batteries I'd love to see which actual cell Surefire is using as I'm certain that they are rewraps anyways. If they have a known "bad batch" then it also leads me to believe that these are low-mid tier binned cells (but we could likely never be certain). If anyone knows how not to blow themselves up doing it please carefully unwrap a cell and post some pictures.
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Posted: 12/25/2018 9:49:59 PM EDT
[#35]
Quote HistoryQuoted:
I don’t think it’s every single battery. I’ve got an 0618 and 0318 that are good. Quote HistoryQuoted:
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Posted: 12/26/2018 12:32:38 AM EDT
[#36]
Quote HistoryQuoted:
I have an 06/18 that is gtg as well. Ran for upwards of 20 min with no problem. On a side note has anyone tried any other 18650 batteries than the surefire ones? Works: -NCR18650B -Dont know the name but recommend by a member here. It’s wrapped brown color and says 18650 3000mah 3.7v Didn’t work: -NCR18650B. It looks almost identical to the one that did work however this one is shorter by a decent amount. It doesn’t appear to have a protruding button. -The brown one I listed above that worked...yeah another that’s exactly the same doesn’t work. These are identical. What’s funny is they both also don’t have a protruding button but one works anyway. Very odd, confusing results. I wish I wasn’t so ignorant in regards to these 18650’s. I might be able to make heads or tails out of this. |
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Posted: 12/26/2018 1:16:38 PM EDT
[#37]
 Attached FileI just ordered a Surefire M600DT and two spare batteries to run on my current duty rifle. It’ll be replacing the Arisaka 300 Series that I’m running right now. Being that most all of my work is done in rural areas, I wanted something with a lot more throw than the 300 series, so I’m anxious to try it. I looked at the Streamlight weapon lights, but I’ve had such good luck over the years with all my Surefires I just couldn’t pull the trigger on a Streamlight. |
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Posted: 12/27/2018 3:50:19 PM EDT
[#38]
Woah, bad battery batch?
I need to check mine. |
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Posted: 12/27/2018 4:30:58 PM EDT
[#39]
I just received a fde M600 for a fde build of mine. I have 4-5 older Surefires but I wanted to see what a current Surefire was like. The fact that a good fde light is hard to find and that this one was on sale made it hard to pass up.
I tried 13 different brands/styles of 18650s in this light including the Surefire 18650. Everything from high drain 2100ma flat tops to 3400ma button tops to everything in between. The conclusion I came to is that every button top 18650 that I had on hand (7 different brands/rewraps) works without interrupting the light output when given a sharp smack to a thick rubber mat. Every single flat top battery I tried all had the light interrupted to some degree ( either didn't work at all or "blinked" when it hard the rubber mat). The reason for this can be seen when you remove the head and look at the positive contact design. There is a large flat contact which is roughly 12-14mm in diameter with a "wall" surrounding it. The contact itself is spring loaded while the wall is not. The reason I feel like the surrounding wall is there is to prevent flat top usage all together. If a flat top's heat shrink were to tear it could cause a hard short at the positive contact and fail spectacularly. It's simply a light that was made to use a button top 18650 and I feel that given the variety of button tops I have on hand it's safe to say that any button top should work given it's rated for the current draw of this light (~99.9% are). It certainly needed lubrication on the threads and o rings out of the box but all in all it seems like a fine light and the color matches my setup well. |
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Posted: 12/27/2018 4:53:10 PM EDT
[#40]
Quote HistoryQuoted:
I just received a fde M600 for a fde build of mine. I have 4-5 older Surefires but I wanted to see what a current Surefire was like. The fact that a good fde light is hard to find and that this one was on sale made it hard to pass up. I tried 13 different brands/styles of 18650s in this light including the Surefire 18650. Everything from high drain 2100ma flat tops to 3400ma button tops to everything in between. The conclusion I came to is that every button top 18650 that I had on hand (7 different brands/rewraps) works without interrupting the light output when given a sharp smack to a thick rubber mat. Every single flat top battery I tried all had the light interrupted to some degree ( either didn't work at all or "blinked" when it hard the rubber mat). The reason for this can be seen when you remove the head and look at the positive contact design. There is a large flat contact which is roughly 12-14mm in diameter with a "wall" surrounding it. The contact itself is spring loaded while the wall is not. The reason I feel like the surrounding wall is there is to prevent flat top usage all together. If a flat top's heat shrink were to tear it could cause a hard short at the positive contact and fail spectacularly. It's simply a light that was made to use a button top 18650 and I feel that given the variety of button tops I have on hand it's safe to say that any button top should work given it's rated for the current draw of this light (~99.9% are). It certainly needed lubrication on the threads and o rings out of the box but all in all it seems like a fine light and the color matches my setup well. I’m going to chalk it up to growing pains from a ground up new product. Or at least head. |
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Posted: 12/28/2018 9:19:15 PM EDT
[#41]
So I just checked my stash of batteries.
I have THREE 0618 batteries. I've never used them; they're just spares that haven't been needed yet. I currently have 4 0318s and 4 1018s in use and these just haven't made the rotation yet (I also have 2 1117s). Will Surefire automatically exchange any 0618 dated battery? I have no desire to start putting them into use and then catching a surprise one day. Also, I haven't had flicker issues but as soon as I get my M600DFs I put DS07s on them. If anyone wants the original tailcaps for "science" let me know. It seems like the supplied standard, push button only tailcap and some bad 0618 dated batteries are the issue here? |
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Posted: 12/29/2018 5:01:21 PM EDT
[#42]
Quote HistoryQuoted:
So I just checked my stash of batteries. I have THREE 0618 batteries. I've never used them; they're just spares that haven't been needed yet. I currently have 4 0318s and 4 1018s in use and these just haven't made the rotation yet (I also have 2 1117s). Will Surefire automatically exchange any 0618 dated battery? I have no desire to start putting them into use and then catching a surprise one day. Also, I haven't had flicker issues but as soon as I get my M600DFs I put DS07s on them. If anyone wants the original tailcaps for "science" let me know. It seems like the supplied standard, push button only tailcap and some bad 0618 dated batteries are the issue here? For the record: when the SF rep told me there was a "bad batch" of batteries, he didn't specify a battery production date range. That was my conclusion based on my own experience. As indicated by other users in this thread, not ALL batteries with the 06 18 date were impacted. Out of curiosity, I'd be interested to know what the battery production dates were of others who received replacement batteries from Surefire. |
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Posted: 12/29/2018 7:59:57 PM EDT
[#43]
All three are duds......Guess I get to deal with Surefire CS now too.
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Posted: 12/29/2018 8:07:40 PM EDT
[#44]
Quote HistoryQuoted:
do the batteries groan when you turn it on. that thing is so bright it is useless. |
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Posted: 12/29/2018 9:06:51 PM EDT
[#45]
Quote HistoryQuoted:
I have brighter lights that fun off 18650s. 1500 isn't that much. |
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Posted: 12/30/2018 2:40:24 PM EDT
[#46]
Quote HistoryQuoted:
All three are duds......Guess I get to deal with Surefire CS now too. |
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Posted: 12/30/2018 3:12:47 PM EDT
[#47]
Quote HistoryQuoted:
I have brighter lights that run off 18650s. 1500 isn't that much. |
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Posted: 12/30/2018 10:20:47 PM EDT
[#48]
Quote HistoryQuoted:
I posted over at Candlepowerforums on vinhnguyen54’s sub-Forum Lights-You-Want-Me-To-Mod asking him to considering modding the Surefire M600DF for longer throw and more Lumens. Quote HistoryQuoted:
Quoted:
I have brighter lights that run off 18650s. 1500 isn't that much. |
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Posted: 12/30/2018 10:40:14 PM EDT
[#49]
I wonder if malkoff has anything planned for the M600df.
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Posted: 1/6/2019 7:21:54 PM EDT
[#50]
I've continued testing all of my Surefire 18650s and found a faulty battery with a 0318 date as well.
I got an initial response back from Surefire already asking for more info, but nothing else yet in a week. I figure while I wait (for what may be a long time) on these 4 getting replaced under warranty I'd try some other protected cell 18650s. Apparently the consensus is that the panasonic 3400mAh is the best but I find some bad reviews where apparently the protection circuit is chinese made or the batteries are crap and potentially chinese clones. Is there a known, good, safe vendor for legit protected cell Panasonic 18650s with no chicom crap? |
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