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Thread: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & more!

  1. #1

    Cool JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & more!

    Warning: even more pic heavy than usual.




    It’s nice to see some attention brought back to the 4xAA polymer-style flashlight. The old lux I-based Streamlight ProPolymer 4AA Luxeon was a favourite of many old-timers here (well, those of use who joined before 2006 ). Of course, at a whopping 42 lumens and 3,500 lux @1m, the old single-stage ProPoly is a little out of date now. Let’s see how this new Jetbeam PA40 model compares.

    Manufacturer Specifications:
    • LED: CREE XM-L (T6)
    • Maximum Turbo output of 468 lumens, for 2 hrs 30 mins (all runtimes based on 2500mAh batteries)
    • Hi output of 220 lumens, for 6 hrs
    • Med output of 50 lumens, for 27 hrs
    • Lo output of 2 lumens, for 150 hrs
    • Lux @ 1m: 7300
    • Beam distance: 170m
    • Power indicator indicates remaining power
    • Memory function
    • Reflector: Aluminum reflector
    • Lens: Coated mineral glass
    • Finish: HA III Military grade hard anodized
    • Body material: Carbon fiber reinforced composite
    • Bezel material: Aero grade aluminum alloy
    • Battery: Four AA batteries
    • Dimensions: Head diameter 40mm, Tube diameter 40mm, Total length 183mm
    • Weight: 185g (without battery)
    • Waterproof: IPX-8 standard waterproof
    • Accessories: Lanyard, spare rubber tailcap switch cover, spare O-ring and quality holster
    • MSRP: ~$70





    I like the packaging – distinctive clamshell presentation case.

    Inside, in cut-out foam, you will find the light, wrist lanyard, spare o-rings and boot cover, as well as a basic quality holster with closing flap (very similar to some recent Fenix lights, but open at the bottom in this case). Also included is a (refreshingly) detailed manual and warranty card.

    This is also one of the rare times I’ve seen moisture-guarding silica gel packs included with a light.



    From left to right: Duracell AA alkaline, Jetbeam PA40, Fenix LD40, Streamlight ProPolymer 4AA Lux, Sunwayman M40A.

    All dimensions with no batteries installed:

    JetBeam PA40: Weight: 184.0g, Length: 183mm, Width: 40.8mm (bezel), 42.1mm (max width)
    Fenix LD40: Weight: 185.5g, Length: 184mm, Width: 41.1 (bezel), 42.4mm (max width)
    Streamlight ProPoly Lux: Weight: 121.0g, Length: 179mm, Width: 39.9 (bezel), 42.8mm (tailcap grip ring)
    Sunwayman M40A: Weight: 247.0g , Length: 145mm, Width 57.0mm (bezel)

    Notice a lot of external build similarity between the PA40 and Fenix LD40? I’ll have more to say about this at the end of this build section. Let’s focus on the PA40:






    I really like the feel of the composite body on the PA40 – I can believe the carbon fiber claim, as it feels tougher and more durable than typical composite/polymer/plastic bodies I’ve held. The head is aluminum, but the anodizing (type III = hard anodized) is a near perfect match to the color and sheen of the composite body – both are a well done matt-black finish. Lettering (which is minimal) is subtle but clearly legible in light gray.

    Although the light doesn’t have knurling as such, there are a lot of grip elements on the handle. Grip is very good - certainly much improved from the old Streamlight ProPoly.

    Square-cut screw threads are anodized for head lock-out (although it takes a full one-and-a-half turns of the head). There are a good number of threads – you won’t accidentally open up this light, and the head still fits on firmly when locked out. Light cannot tailstand.

    It looks like there is a substantial heatsink in the head. This is important, as the cabon fiber/composite body will likely not contribute significantly to heat dissipation.

    Rear tailcap boot cover connects with a forward clicky switch built-in to the battery carrier. There is also a small frosted window below the main panel on the back, through which you can see the red LED on the battery carrier (which flashes or glows red to warn of low battery power - see my UI section for a discussion).

    Battery carriers are always the weakest part in any light that uses them. The all-plastic carrier here seems decent enough (I’ve seen better, but I’ve also seen much worse). Batteries fit securely within the carrier. There is no rattle with the light fully assembled.

    Comparison to the Fenix LD40

    As mentioned above, there is a huge build similarity to the Fenix LD40 – to the point where I’ve discovered that the head and battery tubes fit on each other’s bodies! Here are some detailed pics to show you what I mean (PA40 on the left or top in each picture):









    Some have commented that the PA40 is a "version 2.0" of the LD40 body, which is a fair comment (although maybe more a version 1.2?). I like the fact that there are no longer external screws holding the back plate to the handle. But the major improvements are in the grip and carbon fiber body on the PA40 – it feels and looks like a more rugged light. Aside from those changes, most of the others are really more incremental improvements to the common design (keep in mind, the LD40 was released over six months ago).

    Still, the fact that the parts are interchangeable suggests to me that Fenix and Jetbeam have either sub-contracted out this aspect of manufacture to the same supplier, or the in-house designers have moved from one company to the other.



    The PA40 uses a fairly heavily textured reflector, with reasonably deep proportions for the size of the head. I would expect reasonable throw with a fairly smooth beam. XM-L emitter was well centered on my sample.

    Here's a comparison to the LD40 (PA40 on the left, LD40 on the right).


    Overall reflector dimensions look pretty comparable.

    Which brings me to the white-wall beamshots. All lights are on 4x Sanyo Eneloop NiMH, about ~0.75 meter from a white wall (with the camera ~1.25 meters back from the wall). Automatic white balance on the camera, to minimize tint differences, except for the Neutral LD40 (which was set to Daylight white balance for comparison). All beamshots taken immediately upon activation.













    The PA40 clearly puts out a lot more light than the Fenix LD40, but isn’t as much of a thrower (as you would expect). Output seems similar to my MC-E-based Sunwayman M40A. There is something of a grenish tint-shift in the corona around my PA40's hotspot, but it's not noticeable except up-close (this not uncommon on XM-L lights, in my experience).

    UPDATE AUGUST 21, 2011: I have now done 100-yard outdoor beamshots, in the style of my earlier 100-yard round-up reviews.



    User Interface

    The UI of the PA40 is familiar, but slightly different from most lights in this class.

    Activating the light is simple enough - from Off, soft-press the forward clicky for momentary on, click for locked-on.

    To change modes once On, you need to click the light off-on quickly to advance to the next mode. Interestingly, you can advance modes from Off by simply doing repeated soft-presses of the switch (clicks also work, but are not required). But from On, you need to do the actual click off-on.

    Since flashing the light causes the mode to change, signalling isn’t possible. Mode sequence is different from most lights as well: Turbo – Hi – Med – Lo, in repeating sequence. Light has mode memory, and retains the last setting used for the next time you turn on.

    According to Jetbeam once the batteries reach ~50% power for a given mode (when On), the red light warning indicator will flash three times in three seconds, repeating every ten seconds. When the batteries are nearing exhaustion, the indicator will flash continuously until the batteries are dead. I can confirm that the warning light does indeed come on ~50% into the regulated lifespan of fresh NiMH or alkaline on my sample (scroll down to my runtime graphs).

    There is a really nice feature here – I have found that the battery indicator activity is dependent on the output mode of the light. So, for example, on nearly empty batteries, you will get constant flashing on Turbo, three flashes every ten seconds on Hi, and no flashes on Med or Lo. This is actually a useful way to indicator how much relative runtime is left for a given mode

    No PWM/Strobe

    No sign of PWM at any level of the PA40, leading me to conclude it is current-controlled.

    No blinky, no stroby on the PA40.

    Testing Method:

    All my output numbers are relative for my home-made light box setup, a la Quickbeam's flashlightreviews.com method. You can directly compare all my relative output values from different reviews - i.e. an output value of "10" in one graph is the same as "10" in another. All runtimes are done under a cooling fan, except for any extended run Lo/Min modes (i.e. >12 hours) which are done without cooling.

    I have recently devised a method for converting my lightbox relative output values (ROV) to estimated Lumens. See my How to convert Selfbuilt's Lighbox values to Lumens thread for more info.

    Throw/Output Summary Chart:

    Effective November 2010, I have revised my summary tables to match with the current ANSI FL-1 standard for flashlight testing. Please see http://www.sliderule.ca/FL1.htm for a description of the terms used in these tables.



    Output is reasonable for a XM-L equipped 4xAA polymer light – roughly comparable to my Sunwayman M40A (MC-E version), and certainly a lot higher than the XP-G-based LD40 (or the Lux I-based ProPoly ). They seem to be driving the PA40 to a reasonable level. I don’t know how the new M40A XM-L version compares, but I imagine it is brighter on max.

    Throw is reasonable, but not as far as the LD40 or M40A. This is expected for a XM-L emitter with a reflector this size, driven to these levels on the PA40.

    Output/Runtime Comparison:







    On Turbo/Max, there is a nice gain in efficiency for the PA40 compared to the MC-E-based M40A – nearly twice the runtime for the same max output. A similar efficiency gain is expressed differently compared to the LD40 – on Turbo, runtime is generally similar, but with much greater output on the PA40. In fact, on Hi (one down from Turbo), the PA40 is about as bright as the LD40 on Turbo – but with two and half times the runtime.

    As advertised, the warning light came on ~50% into the regulated portion of the Turbo runs above (i.e. at just over 50 mins on Eneloop, and just over 20 mins on alkaline). Note that is with reasonably new cells - on older NiMH with a lot of cycles, the warning light may come on earlier.

    Potential Issues

    Light uses an all-plastic battery carrier. Still, it seems reasonable quality (i.e. toward the higher end of all-plastic carriers that I’ve seen).

    Need to click Off-On to change modes (from On).

    Takes a full one-and-a-half turn of the head to lock out the light.

    Light can’t tailstand.

    Preliminary Observations

    The 4xAA market has been rather underserved until recently, with relatively few good quality options in this size. I’m happy to report that the PA40 is probably the best quality composite body I’ve seen yet. It is definitely a physical upgrade from the decent Fenix LD40 (with which it seems to share a common ancestry). The PA40 has excellent performance and good features all around, including an innovative battery life indicator.

    The composite body is interesting – I can believe the reinforced carbon fiber claim. It looks rugged, and the feel and grip are good. The unit is well balanced in the hand (with batteries loaded). Switch and interface are easy to handle/use, once you understand how it works (no momentary signaling, though). I would have no trouble recommending this light to non-flashaholics, although I can see how some might prefer the interface or throw of the original LD40 build. The PA40 presentation case is snazzy too.

    Heatsinking is always a concern on polymer lights, but the PA40 seems to have a substantial mass in the head to help compensate. Max output at ~460 estimated lumens in my testing is consistent with manufacturer specs. While this may not be as high as some recent XM-L lights, it seems a prudent drive level for a 4xAA polymer body light.

    Spacing of output modes is good, with three standard output levels and an additional moonlight mode. Performance/efficiency at all levels seems excellent in my testing – Jetbeam is clearly using a good-quality constant-current circuit. It’s also nice to see Jetbeam’s specs are not inflated for either output or runtime (note their runtime values based on 2500mAh batteries, I used 2000mAh Eneloops in my testing).

    I do have some quibbles - tailstanding would be nice, as would the ability to signal in momentary. The later would require a redesign with a secondary switch (i.e., something like the original LD40 interface). The battery indicator located in its place here is an acceptable trade-off to my mind, as it actually provides useful contextual information for the output mode you are in.

    The PA40 is a very good overall build for a XM-L-based, 4xAA composite-body light. Jetbeam has clearly built on the design of earlier models to deliver a well-thought out package, with a few innovations to boot.

    ----

    Jetbeam PA40 provided by Jetbeam for review.
    Last edited by selfbuilt; 08-21-2011 at 11:46 AM.
    Full list of all my reviews: flashlightreviews.ca. Outdoor 100-yard Beamshots 2011. Latest: Skilhunt K26.
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  2. #2
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Great review! I've also received my PA40 recently and I love it, very bright floody light with great ergonomics!

    Although I can't figure out how to switch the tailcap?

  3. #3
    Flashaholic* Haesslich's Avatar
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Since there's another thread in the LED FLasjlights forum comparing the two... how would you describe the usable spill from the light at a distance, given it's more floody due to the OP reflector? Do the extra 200-ish lumens compensate for the lack of throw at medium-to-long distances?

    Edit: I see you know of that thread.
    Last edited by Haesslich; 08-01-2011 at 08:13 AM.

  4. #4
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Thanks Selfbuilt for the valuable review!

    I guess this PA40 is very close to the 4AA light I sought for. But the question is if one would hope and wait for a warm white option?

    Regards, Patric
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  5. #5

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by yliu View Post
    Although I can't figure out how to switch the tailcap?
    You mean change the boot switch cover? Hmmm, good question, it's not clear to me either.

    Quote Originally Posted by Haesslich View Post
    Since there's another thread in the LED FLasjlights forum comparing the two... how would you describe the usable spill from the light at a distance, given it's more floody due to the OP reflector? Do the extra 200-ish lumens compensate for the lack of throw at medium-to-long distances?
    It's hard to say - I like the "throwiness" of LD40, but the PA40 has a nicely balanced XM-L beam (which I wouldn't consider particularly throwy). Haven't had time to play with them much outdoors - I'll let you know once I do my outdoor beamshot comparisons at a distance.

    Quote Originally Posted by Swedpat View Post
    But the question is if one would hope and wait for a warm white option?
    It's a good question - I seem to recall hearing some discussion around here that a neutral or warm option was coming. Don't have any details, so I've asked JetBeam to clarify. Will let you know what I hear back.
    Last edited by selfbuilt; 08-01-2011 at 11:16 AM.
    Full list of all my reviews: flashlightreviews.ca. Outdoor 100-yard Beamshots 2011. Latest: Skilhunt K26.
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  6. #6

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Thanks selfbuilt, cool review as usual!

    And very helpful choice-wise. Can't wait for the outdoor beamshots, and the email from my preferred distributor.

    Cheers,

    Tam

  7. #7

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Thanks for the review selfbuilt. It is actually very difficult to find comprehensive information like this on the PA40 right now, so thank you.

    I have been looking at this light ever since the specs were announced.

    I'm getting this flashlight but I wonder if neutral is the way to go?

    There's pretty much zero information on the neutral version of this light right now.

  8. #8

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Nice review Selfbuilt. I am really tempted by this light. The format and features are really nice. 4 AA power source is nice and convenient for a balance of power/runtime. And you can still slip this size light into your back pocket when needed.

  9. #9

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by regulator View Post
    4 AA power source is nice and convenient for a balance of power/runtime. And you can still slip this size light into your back pocket when needed.
    I agree on the 4xAA power source, it is a convenient size (especially for non-flashaholics). Interesting thought about a back pocket - the relatively thin shape would help for that. But the length wouldn't work too well for front pockets (unless you were wearing cargo shots - even then, I prefer something shorter).
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  10. #10
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    I have heard that the battery LED starts blinking on Turbo after very quickly - within 10 minutes of running (start with full batteries)
    Have you seen this issue?

  11. #11

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by iocheretyanny View Post
    I have heard that the battery LED starts blinking on Turbo after very quickly - within 10 minutes of running (start with full batteries) Have you seen this issue?
    No, but I haven't looked for it (the red LED isn't very bright or obtrusive,and faces away from me in my lightbox). I will check on another runtime. But it certainly possible that voltage sag could trigger it somewhat early (in which case turning off the light for a few secs might restore things). I'll let you know ...
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  12. #12

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Awesome review! I love my LD40 but now I want this PA40..
    Looking for a Fenix E21 Neutral White.

  13. #13

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Very interesting light. Curious to hear if you can reproduce the low battery indicator issue that iocheretyanny mentioned. Your results for that particular issue would be based Eneloops, yes?

  14. #14
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by iocheretyanny View Post
    I have heard that the battery LED starts blinking on Turbo after very quickly - within 10 minutes of running (start with full batteries)
    Have you seen this issue?
    My PA40 does that as well with 4 Sanyo 2700mah batteries. It's not a big issue because it still runs for about 2 more hours after the red light starts blinking.

  15. #15

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by iocheretyanny View Post
    I have heard that the battery LED starts blinking on Turbo after very quickly - within 10 minutes of running (start with full batteries) Have you seen this issue?
    Quote Originally Posted by Colorblinded View Post
    Very interesting light. Curious to hear if you can reproduce the low battery indicator issue that iocheretyanny mentioned. Your results for that particular issue would be based Eneloops, yes?
    I've just re-done both eneloop and alkaline runs on Turbo:

    On eneloop, I got just over 50 mins of runtime before the light started flashing.
    On alkaline, I got just over 20 mins of runtime before the light started flashing.

    Seeing as how the regulated portion of this mode is a little over 100 mins on eneloop, and about 45 mins on alkaline, it sounds like Jetbeam nailed the "50%" mark pretty accurately for both battery sources!
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  16. #16

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by selfbuilt View Post
    I've just re-done both eneloop and alkaline runs on Turbo:

    On eneloop, I got just over 50 mins of runtime before the light started flashing.
    On alkaline, I got just over 20 mins of runtime before the light started flashing.

    Seeing as how the regulated portion of this mode is a little over 100 mins on eneloop, and about 45 mins on alkaline, it sounds like Jetbeam nailed the "50%" mark pretty accurately for both battery sources!
    Strange. After running in turbo mode for 10 minutes with 4 fully-charged Eneloop batteries, my PA40 started half-capacity flashing. Then after another 90 minutes, it started low-capacity flashing.

  17. #17

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by owner View Post
    Strange. After running in turbo mode for 10 minutes with 4 fully-charged Eneloop batteries, my PA40 started half-capacity flashing. Then after another 90 minutes, it started low-capacity flashing.
    Hmm, how old are your Eneloops, and how many cycles have they had? My tests above are on a recent Eneloop purchase - I'd estimate those cells have less than 10 full cycles on them so far.

    I just pulled out some of my "retired" tester eneloops from 2009 (well over >50 cycles), gave them a charge, and got only 20 mins until the warning light came on. I know the overall capacity of those cells is still fairly high (>1800 mAh, as tested on my Maha), so overall regulated runtime should be close to my fresh Eneloops. Just speculation, but it may be the warning light comes on earlier than expected with older and/or heavily used cells.

    UPDATE: I suspect this effect of older cells is likely to be worse under high drain. In the test above, once my older eneloops started flashing at 20 mins, I popped them into ther Maha charger for 1-2 mins, and gave them an extra ~50mAh or so charge. Put them back in the PA40 on Turbo (to make sure I was over the threshold and the warning light was off), and then switched down to Hi mode. The light ran for almost 3 hours at this level before the flashing started again.

    That's a pretty impressive result (i.e. 20mins on Turbo, 3 hours on Hi, before slow flashing began) - especially for cells that were triggered early on Turbo. According to my Maha, the cells only had about 100mAh capacity left at this point (Maha discharge mode).
    Last edited by selfbuilt; 08-02-2011 at 11:50 AM.
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  18. #18

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    So perhaps the indicator is working as intended and the Jetbeam is telling people their batteries are a little more worn out than they thought?

  19. #19

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by Colorblinded View Post
    So perhaps the indicator is working as intended and the Jetbeam is telling people their batteries are a little more worn out than they thought?
    Well, I doubt it is intentional on their part. More likely, the sensor is simply getting confused under high load by some sort of voltage sag in heavily used cells, at an earlier than typical point. At least in my testing on my sample, it's not a problem at the lower outputs, or with newer cells. Of course, YMMV ...
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  20. #20

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by selfbuilt View Post
    Well, I doubt it is intentional on their part. More likely, the sensor is simply getting confused under high load by some sort of voltage sag in heavily used cells, at an earlier than typical point. At least in my testing on my sample, it's not a problem at the lower outputs, or with newer cells. Of course, YMMV ...
    Basically that's what I was alluding to. Is there any way they could remedy that? It seems like it's inevitable that an older cell will experience more voltage sag and under high load conditions won't perform as well or last as long as a fresher set of batteries.

  21. #21
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    My tonight measure:
    JetBeam PA40 Neutral + 4 x Eneloop (colour, about 50 cycles, freshly charged on Maha)

    0:35 - 50% warning (3 x flashing)
    1:49 - 10% warning (continuously flashing)
    2:05 - very low light (Eneloop voltage cca 0,92V)
    2:09 - very very low light (Eneloop voltage cca 0,9V)

    ---------------------------
    Sorry for my English ...
    Last edited by alk007; 08-02-2011 at 04:48 PM.

  22. #22

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Selfbuilt may be right. My Eneloop batteries have been in use for more than 2 years. Yesterday I tested my PA40 in turbo mode with some fully-charged Uniross Hybrio batteries which have been in use for about 4 years. The half-capacitiy warning kicked in immediately!
    Maybe it is time for me to discharge and recharge (=refresh) my batteries with my charger though it is quite time-consuming.

  23. #23

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Thanks for the extra info/data, owner and alk007.

    Quote Originally Posted by Colorblinded View Post
    Is there any way they could remedy that? It seems like it's inevitable that an older cell will experience more voltage sag and under high load conditions won't perform as well or last as long as a fresher set of batteries.
    I imagine it's a hard thing to guard against, given the range of batteries out there (i.e. some will always do better than others). This is probably why you don't see the feature often.

    At least the 3 flashes every 10 secs is not very obtrusive. They wisely kept the LED not overly bright or noticeable. It just means it has limited value at the 50% mark flash indicator on older cells, on the highest output (if my presumption is correct). Seems to be more consistent at the lower output levels, and at the 10% and lower indicator marks.
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  24. #24
    Flashaholic* nanotech17's Avatar
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by alk007 View Post
    My tonight measure:
    JetBeam PA40 Neutral + 4 x Eneloop (colour, about 50 cycles, freshly charged on Maha)

    0:35 - 50% warning (3 x flashing)
    1:49 - 10% warning (continuously flashing)
    2:05 - very low light (Eneloop voltage cca 0,92V)
    2:09 - very very low light (Eneloop voltage cca 0,9V)

    ---------------------------
    Sorry for my English ...
    they have it in NW already?(NW = Neutral White)



  25. #25
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    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Yes. But my Neutral is very close to Cool.
    ---------------------------
    Sorry for my English ...

  26. #26

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by selfbuilt View Post
    I imagine it's a hard thing to guard against, given the range of batteries out there (i.e. some will always do better than others). This is probably why you don't see the feature often.
    Probably. I don't know what the current draw is on max (I'm sure it could be measured) but I would expect the indicator to not be terribly reliable since I would expect it to be pushing the cells pretty hard. I agree with you that the indicator will probably be more reliable on lower output settings.

  27. #27

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by alk007 View Post
    Yes. But my Neutral is very close to Cool.
    That's interesting. The JetBeam sales rep that sent me the PA40 for review says she checked with her manager, and they plan to release the Neutral version next month (likely toward the end of the month).

    But I also see on CPFMP that one US dealer is reporting that 5000K Neutral versions should be available within a week or so (supposedly en route, but not arrived yet, as of yesterday's posts). I suppose its possible JetBeam may have released a limited run of these, and are planning on a more general release soon. Wait and see, I guess.
    Full list of all my reviews: flashlightreviews.ca. Outdoor 100-yard Beamshots 2011. Latest: Skilhunt K26.
    Gratefully accepting donations to my battery fund.

  28. #28
    Unenlightened
    Join Date
    Aug 2008
    Location
    Czech Republic
    Posts
    16

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    I thought that I got cool tint version, but i asked Flavio about that and he said, that my PA40 is Neutral. But tint is very similar to my other XM-L light with "normal" or cool tint (Fenix TK35, Lumintop TD15X, Skilhunt Defier X3) and much cooler than my neutral XM-L lights (Spark SL6-740NW, Spark ST6-460NW). Neutral or Cool, that is the question ... :-)
    ---------------------------
    Sorry for my English ...

  29. #29
    Unenlightened
    Join Date
    Aug 2008
    Location
    Czech Republic
    Posts
    16

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Quote Originally Posted by alk007 View Post
    My tonight measure:
    JetBeam PA40 Neutral + 4 x Eneloop (colour, about 50 cycles, freshly charged on Maha)

    0:35 - 50% warning (3 x flashing)
    1:49 - 10% warning (continuously flashing)
    2:05 - very low light (Eneloop voltage cca 0,92V)
    2:09 - very very low light (Eneloop voltage cca 0,9V)

    ---------------------------
    Sorry for my English ...
    UPDATED with alkalines:

    JetBeam PA40 Neutral + 4 x Energizer maximum (use by 2017)

    0:10 - 50% warning (3 x flashing)
    0:52 - 10% warning (continuously flashing)
    cca 1:25 - very low light
    cca 1:50
    - very very low light
    ---------------------------
    Sorry for my English ...

  30. #30
    Flashaholic
    Join Date
    Jul 2002
    Location
    CT
    Posts
    169

    Default Re: JetBeam PA40 (XM-L T6, 4xAA, Carbon Fiber body) Review: RUNTIMES, BEAMSHOTS, & mo

    Selfbuilt, Thanks for the great review!!! You really do a great job on these! I have 2 days till my wife lets me open mine..LOL You mentioned the form of the Strealight 4AA and that was one of my first Led lights way back when. You mentioned it was a favorite of those before 2006, so I had to look at my old post dated from 01/06/2003!! I played fetch all the time with my dog with that light in the winter and it lived.

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