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  1. #1
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    Oh no, not another P7 thread......

    Quick review.

    Initial testing:

    Review of Aurora AK-P7-3 SSC P7-C 900-Lumen 2-Mode LED Flashlight from Deal Extreme sku.14451 $50.02



    Construction: Machined from one piece of aluminium, with short extension tube and not so short tailend.

    First thoughts - Seems to be well engineered and thought out. Pill and soldering look ok. Longer (236 mm)than some other 2 x 18650 torches, probably due to the resistive tailcap, light output seems good.

    Measurements:

    On high:
    Runtime = 2 hrs 16 mins (continuous)
    Current draw from battery = 1.16A (measured) Voltage unmeasured
    Voltage at P7 = 3.34V (measured)
    Current at P7 = 1.42A (calculated)
    Estimated Watts @ LED 4.7W
    Lumens = 400 ?

    On low:
    Runtime = 5 hrs 43 mins (continuous)
    Current draw from battery = 0.6A (measured) Voltage unmeasured
    Voltage at P7 = 2.99V (measured)
    Current at P7 = 480mA (calculated)
    Estimated Watts @ LED 1.4W
    Lumens = 140 (estimated)

    Resistor in tailcap = 7.5 ohms (measured)

    Battery recharge time 7 hrs 50 mins

    Weight inc. batteries 374 g (13.2 oz)

    Maybe not the best P7 torch out, but imo it's well suited to use as a cycle light as it doesn't have lots of silly modes, high isn't a 'turbo' mode that can only be used for a few minutes and it won't switch to SOS and flash modes on bumpy roads.

    Other thoughts - there are reports of the board and resistor failing when running on 4 x CR123A cells. Although the manufacturer recommends a maximum volage of 17V so the torch should cope with 4 CR123A's. However, if the removable extension tube is removed the torch can (in theory) be used with 3 x CR125A cells (I say in theory as I don't have 3 x CR123A cells to try it).

    Oh yeah, light output isn't bad and I would (and probably will) buy another.

    Pros:
    Good build quality
    High for out of town
    Low for in town
    Doesn't have 5, 8 or 30 useless modes so better suited to cycling
    Long runtimes

    Cons:
    Might be a bit long for some people 236 mm (9 1/4")
    Doesn't have SOS for when you are lost on the moors

    I've bought the following mounts to try:

    sku.15342 Universal Bicycle Mount (22mm~32.8mm) Price: $3.98
    sku.792 Flashlight Mount Price: $1.99
    sku.13004 Fenix Flashlight Bike Mount Price: $8.40
    sku.15642 Universal Bicycle Mount for Flashlights and Gadgets Price: $3.35

    Results to follow...
    Last edited by Unknown Cyclist; 06-11-09 at 07:53 AM.

  2. #2
    Senior Member socalrider's Avatar
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    Which mount are you using and is it stable for such a long light?

  3. #3
    Senior Member brokenknee's Avatar
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    Linky doesn't work.
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  4. #4
    Senior Member socalrider's Avatar
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  5. #5
    Senior Member brokenknee's Avatar
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    Yep, that one works.

    Just received my edcp7 from Elektro Lumens a little over a week ago. Living in Minnesota I have not had a chance to try it out on the bike. (alright I'm a wimp) but that boast a 2 hour run time with one 18650 battery. Seams like just a little over two hours for two is a little short.

    As I said have not done a time trial on the light.
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  6. #6
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    Quote Originally Posted by brokenknee View Post
    Yep, that one works.

    Just received my edcp7 from Elektro Lumens a little over a week ago. Living in Minnesota I have not had a chance to try it out on the bike. (alright I'm a wimp) but that boast a 2 hour run time with one 18650 battery. Seams like just a little over two hours for two is a little short.

    As I said have not done a time trial on the light.
    Well....using 1 x 18650 your torch might even be direct drive - and then there's the light output to take into consideration.



    TBH 5 hrs 43 mins on low isn't too bad and you might find the light output of the edcp7 is somewhere between high and low on this...or...it might be that the edcp7 isn't regulated and initially has reasonable light output that that drops steadily.

    In any case, one thing is for sure..you don't get anything for free and an 18650 is an 18650 so it's a bit unlikely that you are getting as much light (lumen hours) for 1/2 the power input.



    This is my first attempt at reviewing a torch and is really intended to help other people make an informed decision.

    As you say, your torch 'boast' 2 hr+ runtime - perhaps it would be a more helpful comparison if you benchtested it and posted some figures ?

    I'm not claiming that these bench test results are good or poor, just stating what they are.

    Back to the real world, as I live out of town and invariably end up going through unlit and lit areas, I will be switching between high and low frequently. This should give me itro 3 - 4 hours of adequate light before needing a recharge.

    It wouldn't matter if I got a flat battery 5 miles from home or 0.5 miles, I would still have to do something about it. That said, even if all my trips were short, I would still opt for 2 x 18650 for the convenience.

    I'm trying out the mounts atm and will report back.


  7. #7
    Senior Member socalrider's Avatar
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    Brokenknee

    How long did it take for you to get the flashlight.. I know Wayne overpromises on delivery times.. But his flashlights are solid and the workmanship is always top shelf..

    I would be interested in what kind of runtime you get on the edcp7..

    The longest running P7 that I have tried is the Trustfire P7 that Kaidoman sells.. It runs for right at 90 minutes full power and another 30 minutes in low mode.. It has the best regulation of any single cell P7 that I have tried.. This light is slightly less bright than some others I have but easily puts out 500 lumens.. The medium mode is 70% and low mode is 50% of high and that seems very accurate.. It also has a strobe and sos mode.. It does not switch modes like some other multimode lights when riding a bike and the workmanship is very good compared to the MTE lights..

    Here is a link: http://www.kaidomain.com/ProductDeta...ProductId=5374

  8. #8
    Senior Member brokenknee's Avatar
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    Wayne, seams to be a very nice guy (judging by the emails we exchanged) but he does WAY over promises on delivery times. When I ordered my light (back in early October) the web site said it would ship by the end of November, Just received the light about a week and a half ago. I had already heard about his over promising from this forum so I did not worry about it to much.

    I will try to do a run time test in the next day or two, I first want to charge the batteries to make sure they are fully charged. (Have been playing with it around the house). I will post back with results once I have completed the test. You are correct I should have done a time test before writing my post, I know what is boasted on a web site and actual times can very greatly.

    I have no way to judge the lumens, I know the web site says 700 lumens not 900 like a lot of the lights on DX. I will put the light in a different room and try to check every 15 minutes or so. Hopefully I will be able to tell if there is any noticeable drop in light output.

    For those of you who are not familiar with this light, it is only a single mode and on the high end price wise for a P7, $129.00 plus shipping, I think it came to a little over $140.00 shipped. But when compared to bike specific lights the price is not that bad.

    I also have a Fenix L2D Q5 so I didn't think I needed all the other modes that come with most of the P7s on DX.
    Last edited by brokenknee; 01-27-09 at 08:39 AM.
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  9. #9
    Fred on Foot dwilbur3's Avatar
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    As far as shipping times go, timing is everything. I ordered my P7 after Christmas and it came at about the same time as those many had ordered in November.

    I'm extremely pleased with my Aurora 2 mode P7. My morning commute is less than an hour so I got the 1 x 18650. For only $36 it's a steal. Even adding the batteries, charger, and mount I paid less than $60 for a light that's much brighter than any dedicated bike light I've seen. (Even bike lights costing 10 times as much).

  10. #10
    Senior Member brokenknee's Avatar
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    Quote Originally Posted by dwilbur3 View Post
    As far as shipping times go, timing is everything. I ordered my P7 after Christmas and it came at about the same time as those many had ordered in November.

    I'm extremely pleased with my Aurora 2 mode P7. My morning commute is less than an hour so I got the 1 x 18650. For only $36 it's a steal. Even adding the batteries, charger, and mount I paid less than $60 for a light that's much brighter than any dedicated bike light I've seen. (Even bike lights costing 10 times as much).


    I am sure you are correct about shipping timing. However I thought early October was far enough away from the Christmas rush.

    I have to agree that for the price of a P7 compared to a dedicated bike light you get way more lumen per $. You also have the option to use it for a regular flashlight. Easier to take off the bike so you don't have to worry about it getting stolen. Only drawback I see is the run times. So if you don't mind changing batteries in the middle of a long ride it is the way to go IMHO.
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  11. #11
    Fred on Foot dwilbur3's Avatar
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    Quote Originally Posted by brokenknee View Post
    ...Only drawback I see is the run times. So if you don't mind changing batteries in the middle of a long ride it is the way to go IMHO.
    My MiNewt USB lasts for about 3.5 hours on a charge, is only as bright as my P7 on low and cost $100.

    I carry 4 batteries for my P7. On high that would last over 4 hours and on low that 10-12 hours. Since the MiNewt is only as bright as the P7 on low, I get 2.5 hours per battery on the P7 vs 3.5 on the MiNewt. And once the MiNewt runs out I'm out of luck. With the P7 I just pop in another battery.

    Even adding the cost of an extra charger and 4 batteries I'm probably $25 cheaper with the P7.

  12. #12
    Senior Member brokenknee's Avatar
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    Quote Originally Posted by dwilbur3 View Post
    My MiNewt USB lasts for about 3.5 hours on a charge, is only as bright as my P7 on low and cost $100.

    I carry 4 batteries for my P7. On high that would last over 4 hours and on low that 10-12 hours. Since the MiNewt is only as bright as the P7 on low, I get 2.5 hours per battery on the P7 vs 3.5 on the MiNewt. And once the MiNewt runs out I'm out of luck. With the P7 I just pop in another battery.

    Even adding the cost of an extra charger and 4 batteries I'm probably $25 cheaper with the P7.
    That would be another plus, being able to carry extra batteries for longer run times. I suppose you could carry an extra battery pack for the dedicated lights, however they tend to be costly and would take up more valuable space in the luggage compartment.
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  13. #13
    Fred on Foot dwilbur3's Avatar
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    Looking at Nite Rider's website, I don't see any batteries for the USB model for sale. But looking at the price of their other batteries, I'd guess it would be nearly as expensive as the whole light.

  14. #14
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    I'm surprised so many people are against 2 x 18650 torches without trying them.

    The point of my initial post was to provide info for anyone considering the torch I just bought.

    I'm sure some of the single 18650 torches are ok, but I can't see them beating 5 hrs 43 mins or providing as much light for as long on high, it just isn't possible.

    Anyway, I hope the initial info is of help to someone.


  15. #15
    Fred on Foot dwilbur3's Avatar
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    Quote Originally Posted by Unknown Cyclist View Post
    I'm surprised so many people are against 2 x 18650 torches without trying them.

    The point of my initial post was to provide info for anyone considering the torch I just bought.

    I'm sure some of the single 18650 torches are ok, but I can't see them beating 5 hrs 43 mins or providing as much light for as long on high, it just isn't possible.

    Anyway, I hope the initial info is of help to someone.

    I'm not at all against them. I just don't need one, so I saved the $15. If I had a 90 minute commute, I'd probably have gone with the 2 x.

  16. #16
    Senior Member socalrider's Avatar
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    Lighhound sells a plastic sleeve that you can carry 2x 18650 batteries.. I use this when I ride for a long time at light..

    http://www.lighthound.com/Lighthound...es_p_2803.html

  17. #17
    Senior Member brokenknee's Avatar
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    Quote Originally Posted by Unknown Cyclist View Post
    I'm surprised so many people are against 2 x 18650 torches without trying them.

    The point of my initial post was to provide info for anyone considering the torch I just bought.

    I'm sure some of the single 18650 torches are ok, but I can't see them beating 5 hrs 43 mins or providing as much light for as long on high, it just isn't possible.

    Anyway, I hope the initial info is of help to someone.


    Don't misunderstand, I am not against them, I was just a little surprised by what I thought was a short run time considering that you are basically doubling the amount of power available. It has been awhile since I followed the P7 threads and I do now recall that most of the single torches have only about an hour run time.

    I really appreciate the people on this forum taking time to review products they have purchased. It is from forums such as this I make many of my decisions for my purchases.

    I have charged up the 18650s and will be doing a run time latter on tonight with my EDC P7, I will see if it gets close to the two hour run time they boast on the web site. I can only hope. Unlike your torch, I only have the one mode, so if I need a longer run time I will not have the option to run the light on a lower setting. My only option is to carry extra batteries (not a big deal for me)

    Please do not let my comments stop you from doing further reviews on any product you purchase; even if someone else has already done a review on the same product. It is always good to have more than one perceptive on a product even if they agree.
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  19. #19
    Senior Member socalrider's Avatar
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    Broken

    Make sure when doing a run test that you put a fan in front of the light just to keep it cool.. I am very interested in the runtime of this light, it is one I would like to order.. I have lights from wayne that go back 4 years.. He is also considering making a P7 Maglite 2c Drop in that looks very interesting..

    Most of my p7's run anywhere from 45 minutes to 90 minutes in high mode for a single cell..

    I have those also UC.. The lighthound sleeves are more water tight if you are carrying in your jersey pocket and lighthound is in the usa so you don't have to wait 2-3 weeks for delivery..
    Last edited by socalrider; 01-27-09 at 05:21 PM.

  20. #20
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    Quote Originally Posted by socalrider View Post
    I have those also UC.. The lighthound sleeves are more water tight if you are carrying in your jersey pocket and lighthound is in the usa so you don't have to wait 2-3 weeks for delivery..
    The sleeves being in the US isn't really of any help to me.....

  21. #21
    Senior Member socalrider's Avatar
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    Quote Originally Posted by Unknown Cyclist View Post
    The sleeves being in the US isn't really of any help to me.....
    That is true, I didn't realize you were in the UK..

  22. #22
    Senior Member brokenknee's Avatar
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    Quote Originally Posted by socalrider View Post
    Broken

    Make sure when doing a run test that you put a fan in front of the light just to keep it cool.. I am very interested in the runtime of this light, it is one I would like to order.. I have lights from wayne that go back 4 years.. He is also considering making a P7 Maglite 2c Drop in that looks very interesting..

    Most of my p7's run anywhere from 45 minutes to 90 minutes in high mode for a single cell..

    I have those also UC.. The lighthound sleeves are more water tight if you are carrying in your jersey pocket and lighthound is in the usa so you don't have to wait 2-3 weeks for delivery..
    I don't think a fan is going to be necessary; I decided to mount it on my bike sitting outside. Ambient temp currently -2 degrees Fahrenheit. . I will also try to remember to take photos and let everyone be there own judge if there is a drop in light output. Hopefully I can figure out how to post them on here. Never posted any before.
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  23. #23
    Senior Member brokenknee's Avatar
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    Here are the results of my run time test for the EDC P7. For the test I mounted the light on my bike and left it outside. Ambient temp at start of test, minus 2 degrees below zero Fahrenheit. Fully charged new trustfire 18650 2500mAh battery. Ambient temp at end of test minus 3 degrees below zero Fahrenheit. The pictures were taken with a canon power shot sd 400 camera on automatic. I am not sure how this effected the photos; but I do not know if the camera has the manual settings or not. I do not think so as I could not find them.

    For distance reference, my shed is 60 feet long and the snow pile that you see is about 10 feet beyond that. Sorry no trees around to give better distance reference.

    You will notice the light out put dropped dramatically within the first half hour. After that it seemed to be a much more gradual decline.

    P7 start
    P7 Start.jpg

    30 Minutes
    P7 30 Minutes.jpg

    One Hour
    P7 1 hour.jpg

    Two Hours
    P7 2 hours.jpg

    Three Hours
    P7 3 hours.jpg

    Three Hours Thirty Minutes
    P7 3 and 1 half hours.jpg



    I did not think to compare the P7 to the Fenix until the one hour mark, at that time I would say the P7 was as bright as the fenix on turbo. At the two hour mark I would say it was as bright as the high, the three hour mark medium and at the 3 1/2 mark it was still about the medium of the fenix l2d Q5.

    I stopped taking pictures at the 3 1/2 hour mark as they did not tend to show up to well. I stopped the test at 4 hours 20 minutes as it was getting late. At that time I would say the light was about as bright as the fenix on low.
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  24. #24
    Senior Member Ziemas's Avatar
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    Quote Originally Posted by brokenknee View Post
    Yep, that one works.

    Just received my edcp7 from Elektro Lumens a little over a week ago. Living in Minnesota I have not had a chance to try it out on the bike. (alright I'm a wimp) but that boast a 2 hour run time with one 18650 battery. Seams like just a little over two hours for two is a little short.

    As I said have not done a time trial on the light.
    Everything I've read about that light says it has a 45 minute runtime.

    http://www.cpfmarketplace.com/mp/sho...d.php?t=182079

  25. #25
    Senior Member Zero_Enigma's Avatar
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    Quote Originally Posted by Unknown Cyclist View Post
    I'm surprised so many people are against 2 x 18650 torches without trying them.

    The point of my initial post was to provide info for anyone considering the torch I just bought.

    I'm sure some of the single 18650 torches are ok, but I can't see them beating 5 hrs 43 mins or providing as much light for as long on high, it just isn't possible.

    Anyway, I hope the initial info is of help to someone.

    Have you considered doing the mod similar to the Maglite D cell chop the middle out then glue the tail end into the front end? Then drill a hole in the switch or exposed tubing and run a wire to an ext. battery pack using waterproof quick connects so you can remove your battery when you're off the bike.
    Zero_Enigma

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