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Thread: Zebralight SC700d 21700 XHP70.2 90+CRI

  1. #181

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by markr6 View Post
    I'm just wondering if I should cancel the 21700 cell I ordered along with my 700d. Will they not get those in time? If they don't I assume they'll hold up my order.

    There's plenty of time, so I'm going with it for now, trusting they'll have those in stock by December.

    Samsung INR21700-40T photo is up and in stock.
    GOOD TINT!

  2. #182

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Is it just me, or does it look like the 700d will have a non-reversible pocket clip? The groove looks uniquely tiered and deeper towards the tail. This looks like a one-way snap-on.

    I'm only a ZL headlamp owner at the moment, so I'm not sure how ZL typically does clips on larger lights (between screw-in and snap-on). But I do appreciate the reversible clip on my H52w. Sometimes I like to keep a light heads-up in a bag, but clipped in.

  3. #183

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by candelabrah View Post
    Is it just me, or does it look like the 700d will have a non-reversible pocket clip? The groove looks uniquely tiered and deeper towards the tail. This looks like a one-way snap-on.

    I'm only a ZL headlamp owner at the moment, so I'm not sure how ZL typically does clips on larger lights (between screw-in and snap-on). But I do appreciate the reversible clip on my H52w. Sometimes I like to keep a light heads-up in a bag, but clipped in.

    The clip only goes in the groove near the tail cap per the pictures on ZL’s site. Unless they change it in production models.

  4. #184

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    My biggest concern is the fact ZL mentions only flat top UNPROTECTED cells will fit. Not sure if that will always be true. But being much more comfortable with protected cells, that may be a deal breaker for me personally.

    I do do want this light though.

  5. #185

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    You must be new here... ZL has been doing this for a long time... buy quality unprotected cells and you will have the same chance of problem as using protected cells (slim).

  6. #186

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by holygeez03 View Post
    You must be new here... ZL has been doing this for a long time... buy quality unprotected cells and you will have the same chance of problem as using protected cells (slim).

    Not new. Check out the date under my user name. Less than a year newer than you

    But it I know what you mean. You can be safe with the correct procedures and buying good cells. But I like to have a little back up to my procedues just in case. Probably overkill to be so cautious.

  7. #187
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by t76turbo View Post
    But it I know what you mean. You can be safe with the correct procedures and buying good cells. But I like to have a little back up to my procedues just in case. Probably overkill to be so cautious.
    Zebralight has things like low-voltage-protection and thermal protection built right into the light. There's really no need for protected cells, unless your charger is doing bad things.

  8. #188

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by t76turbo View Post
    But it I know what you mean. You can be safe with the correct procedures and buying good cells. But I like to have a little back up to my procedues just in case. Probably overkill to be so cautious.
    I was concerned about unprotected cells in my ZL, I learned about ZL's circuitry with safeguards built in, it's no longer a concern as I used top quality cells

  9. #189
    Flashaholic Glock27's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Don't assume a protection circuit actually buys you more protection. The + ribbon cable is very susceptible to damage/shorting. There have been lots of documented instances of this...

    G27

  10. #190

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    I agree. Doubling up protection isn't always a good thing. In fact it could make things worse. I have a good example, but it's a bit crude so I'll refrain from going any further.
    GOOD TINT!

  11. #191

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Correct me if I'm wrong. But don't protection circuits limit the amps...so if your are pulling 5 plus.. It'd trip...? What would the amp limit be typically on a protected cell?

  12. #192
    Flashaholic* Keitho's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Pretty much all consumer electronics use "unprotected" cells, and rely on the device's circuitry. Think of a typical device with a single 18650 cell, like my toothbrush. It doesn't have a cell with a wrapper covering a protection circuit--it uses an "unprotected" cell, and has charge/discharge circuits to protect it built into the toothbrush.

    Multi-cell devices, especially with cells in series: yes, please, protect every cell. Single-cell [something]-fire lights--if you must use the light once prior to throwing it in the trash, use a quality protected cell. Single-cell lights, or multi-cell lights with all-parallel cells--I don't see a need for individual cell protection if the device is high quality and has protection circuitry.

    Another example of protection being a bad thing--some are prone to cutting out from a shock--like a weapon-mounted light. Not that a Zebralight is a good choice for weapon mounting...

  13. #193

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Do you really have a toothbrush with an 18650 in it? That seems like a LOT of capacity... probably don't need to charge it very often.

  14. #194
    Flashaholic* Keitho's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by holygeez03 View Post
    Do you really have a toothbrush with an 18650 in it? T
    Actually, that's a great question. I assumed based on the size/weight of the toothbrush it was an 18650...but found out with a quick internet search that its actually a 14500. Makes a lot more sense, now that I think about it. The same search revealed that, of course, it is an "unprotected" cell.

  15. #195

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    I was going to pass on this one, but I just pulled 10 fresh Samsung 30T's from a couple new Dewalt 3AH batteries. I was hoping for 30Q 18650's but I immediately thought about the SC700 when I saw these. I can't let these go to waste

    I do love to talk myself into new lights.

  16. #196
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by markr6 View Post
    Samsung INR21700-40T photo is up and in stock.
    It seems the boat came in. The 40T is now available from many battery sellers. Excited to have the new 40T and 50E available. Now we need more 21700 based lights!

  17. #197
    Flashaholic sp5it's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    XHP70.2 can't be good in any torch.
    My flashlight is bigger than yours...

  18. #198
    Flashaholic* Derek Dean's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by sp5it View Post
    XHP70.2 can't be good in any torch.
    Hmmmm......one of the reasons I'm looking forward to the SC700d is that I'm quite interested to see how the ZL engineers have incorporated the XPH70.2 into this new light.

    They've got a pretty good track record so far, so I'm willing to bet that this light will be a winner as well.

  19. #199

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by Keitho View Post
    Actually, that's a great question. I assumed based on the size/weight of the toothbrush it was an 18650...but found out with a quick internet search that its actually a 14500. Makes a lot more sense, now that I think about it. The same search revealed that, of course, it is an "unprotected" cell.
    Okay, that's it: I am going to send my electric toothbrush to Vinh and ask him to upgrade it to an 18650.

    A V54 toothbrush! Wait till I show it off to my friends! Maybe even a Fiat Brush!

  20. #200

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by Derek Dean View Post
    Hmmmm......one of the reasons I'm looking forward to the SC700d is that I'm quite interested to see how the ZL engineers have incorporated the XPH70.2 into this new light.

    They've got a pretty good track record so far, so I'm willing to bet that this light will be a winner as well.

    Yea, I have high hopes as well. If it's anything like the Thrunite TC20 with the XPH70.2 it will be great.
    Emisar D4vn, D4S, Thrunite TC20, Cat V6, TN11, D40Avn, Jetbeam BC20

  21. #201

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    About a month or less to wait!
    GOOD TINT!

  22. #202
    Flashaholic* Derek Dean's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Should be just in time for the longest night of the year : )

  23. #203

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by Keitho View Post
    Pretty much all consumer electronics use "unprotected" cells, and rely on the device's circuitry. Think of a typical device with a single 18650 cell, like my toothbrush. It doesn't have a cell with a wrapper covering a protection circuit--it uses an "unprotected" cell, and has charge/discharge circuits to protect it built into the toothbrush.
    To be fair, the main reason why this is the case is that the end-user is not expected to take cells out by themself. Flashlights and Ecigs are the notable exceptions but they're also considered enthusiast items with all the expected caveats (e.g. the lack of safety certifications that would allow suing the manufacturer for damage—the end-user assumes any and all risks and responsibilities). As such, the highest danger of using unprotected cells is experienced when the cell is not inside the device in question. An accidental short or a charging fault are rather common (especially if kids are involved) and very dangerous. Protection circuits don't safeguard from all kinds of damage or accidents, but they help minimize risks which are decidedly non-trivial. I won't try to convince anyone to do it one way or another, but this information is to be kept in mind when making decisions.

    Quote Originally Posted by Beckler View Post
    For the sc600 experts on here, what is the runtime and stepdown time likely to be on this new one at 3k Lm?
    Assuming you can cool it down sufficiently to sustain maximum brightness—which is highly unlikely, mind you—you should get about 30 minutes with a 17.5 Wh battery (Samsung T48 4800 mAh) based on the spec limit of the LED (29 W). At room temperature it will start stepping down almost immediately, albeit very gradually, until it reaches its temperature target; this should happen within 10–20 minutes or so, depending on the ambient temperature and the mode you started at. I have revised my earlier estimates based on the fact that the lowest PID mode has 945 lm maximum brightness, meaning that one and any higher values are not considered sustainable under normal conditions. So, assuming a 17.5 Wh battery and ~900 lm at the thermal equilibrium point (which depends on ambient temperature), you'd be looking at 2–2.5 hours or so. Subtract about 13–15% of that runtime for a 4000 mAh battery (Samsung T40). The real-world runtime difference between T40 and T48 is expected to be less than the nominal 16.7% on the higher modes since the T40 has a more robust voltage curve, thus not sagging as much under heavy load.

  24. #204

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Still wondering if this thing will run on a 4800 or 5000 mAh cell.... Really looking to run 1-1500 lumens for a long time

  25. #205
    Flashaholic* Connor's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    I don't think 10A will be enough to get 3000 lm .. you probably need around 20A max. cells.
    'I ought never to act except in such a way that I can also will that my maxim should become a universal law.'

  26. #206

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    What I have experienced with a SC600Fd Mk3 is that 1500 Lm mode stays a bit over 1 min in room temperature before stepping down. It seems that about 400 Lm is possible without stepping down in normal conditions. About 800 Lm can be held when going below the freezing point and 1000 Lm or above when it is really really cold. Assuming that SC700d lumen PID modes and highest non-PID mode is linear compared to their other regulated lights, stable 1500 Lm could be very possible when going below the freezing point. This would be good because in Finland it is usually well below the freezing point in darkest days or there is so much wind that it has similar cooling effect.

  27. #207
    Flashaholic* Derek Dean's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Well, if it's cold enough outside that my new SC700d can maintain 1500 lumens, then I'm staying inside : )

  28. #208

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by Derek Dean View Post
    Well, if it's cold enough outside that my new SC700d can maintain 1500 lumens, then I'm staying inside : )
    LoL.... It's 32 here and I'm going to the store in a shirt

  29. #209

    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    Quote Originally Posted by likethevegetable View Post
    If anyone here has an SC600w IV Plus and is considering an SC700d and would kindly share their 2¢, your opinions are appreciated.
    Have the IV Plus and the III HI, and pre-ordered the 700 as soon as I saw it (today). I never pre-order anything, but I'll make an exception since I'm so excited to see this LED & battery combination with all ZL's finesse instead of the other ugly (IMHO) and big ones currently available.

    Why I want it is more a tech geek thing than practical use. I have an XHP35, then 50, so naturally I "need" a 70 now. 18650 is a fine format and I have tons of them and they'll be the main thing for a long time. I love the SC64 and Emisar D4 size for SDC (some day carry, 1xAAA is EDC). The Emisar D4S is a lot of fun and now I know what a 26650 is like. It makes for a good body size, but until Japan and Korea take up the format, one 26650 flashlight is enough. 21700 is being taken seriously by battery manufacturers so should be fun to watch. 18650s really seem to have topped out, since the "3600mAh" cells I got are no better than the 3500mAh of last year. I got the 40T just so I get something with the light, but will have to do some research on lower current cells after we get some current measurements off the SC700.

    So, it's a LED I really want to have in a light, and a way to use a new battery size I'm interested in. And it's a new ZL. That is enough. Worth the sacrifice of putting off a second 8TB external drive for a month or two.

    Quote Originally Posted by Connor View Post
    I don't think 10A will be enough to get 3000 lm .. you probably need around 20A max. cells.
    30W at 3.6V and 85% efficiency is still a bit under 10A, so I don't expect this light to go over that. Given 18650 performance, though, 10-15A cells running at 8-10A may have the same or worse Wh than lower mAh 25-35A cells. However, unless I'm running it in a mug of water or on a bike that isn't my exercise bike, that 8-10A isn't going to account for much of the time I use this light. So, I'll probably get a lower drain cell a few days after the light arrives and I get tired of waiting for the one it came with to charge.
    Last edited by radellaf; 11-17-2018 at 11:34 PM.

  30. #210
    Flashaholic* CelticCross74's Avatar
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    Default Re: Zebralight SC700d 21700 XHP70.2 90+CRI

    "made in America this time"? I remember reading on this site I believe a couple of years ago that ZL has TWO factories. ONE is in China for THAT part of the world. The OTHER is in TEXAS. I actually emailed ZL when the newer SC600's came out asking them where they source their materials. To my amazement ZL actually emailed me back in 24 hours! In the newer ZL's for North America they are made in Texas. All the parts are from the States, India and a couple of other countries that are NOT China.

    As for the ZL's made in their Chinese factory even THOSE have more non Chinese parts than Chinese parts. I think it is the ZL bodies and reflectors that the Chinese ZL factory makes the rest of the parts are from Western suppliers.

    As for "marrying itself to CREE" there are only a couple other emitter producers left now like Nichia that have a foot hold in the LED light market. What I wonder is are they ACTUALLY MADE BY CREE or are they cheap Chinese CREE knock offs? For how much they cost I assume the emitters are actual CREE emitters off of a CREE assembly line.

    I also took a shot in the dark and asked ZL if they could email me the design schematics of the SC600 and of course got a "NO" answer to that in return. Was worth a shot lol..

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