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  1. #1
    I am a caffine girl colleen c's Avatar
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    Wink pictures of beamshot of a MG P Rocket XPG R5 along with other light and combo

    I've used this MG XPG R5 450 lumen OP reflector for several weeks now. So far I like the flashlight although at 450 lumens, I think it a little on the dimmer side to use as a stand alone primary light. The beam it cast is more of a throw when comparing to a MS900 and yet, it has a throw which I think the P7 flashlight is lagging. So it kinda of a combination of the two. I do find it very useful to combine the MG XPG R5 light with a floodier light such as the MS to get a pretty good beam. Since there's been little post regarding a beamshot of the light, I took the time to capture some picture of that light in comparison with some other common light and also some interesting combination setup.

    I used some garbage can as a target at a park. They are 50ft from the camera. The tree behind them is 100ft away. There were some ambient light from the surrounding light in the park where I took these so I will include that picture. All picture had fix aperature, shutter and ISO. Those info are included in the pictures. All lights where using AW 2600 mah batteries that were charged to 4.19v on a Pila charger.

    For those who has a P7 or MS900, I think adding this MG P Rocket XP-G R5 is a good to get some more lights in the distant.

    Here is the scene during the daytime shot:



    Here is the ambient surrounding light of the area:



    Here is the P7 on high


    MS900 on high


    MG P Rocket XPG R5 OP reflector cool white


    P7 aim low and MG P Rocket aim high


    MS900 aim low and MG P Rocket aim high
    Attached Images Attached Images
    Last edited by colleen c; 12-12-10 at 09:22 PM.
    "Difference between a well dressed cyclist riding a two wheeled bicycle and a badly dressed cyclist riding a Recumbent is only a-tire"
    _______________________________________________________________________
    Some people got their head so far up their butt such that the only thing they hear is muffle when trying to explain anything to them! I only wish they take it out sometimes to smell the roses.

  2. #2
    I am a caffine girl colleen c's Avatar
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    I only use the MG P Rocket on my MTB setup because I'm using couple of MG X Thrower on my commuter bike. I thought it would be interesting just to post those in case for folks who want to compare the throw of the Rocket vs the Thrower.

    Thrower only:


    My commuter set up with all lights on high
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    "Difference between a well dressed cyclist riding a two wheeled bicycle and a badly dressed cyclist riding a Recumbent is only a-tire"
    _______________________________________________________________________
    Some people got their head so far up their butt such that the only thing they hear is muffle when trying to explain anything to them! I only wish they take it out sometimes to smell the roses.

  3. #3
    Senior Member mechBgon's Avatar
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    Thanks for putting in the work to do these I think you told us the runtime on the 450-lumen XP-G before, but I forgot.

  4. #4
    I am a caffine girl colleen c's Avatar
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    Quote Originally Posted by mechBgon View Post
    Thanks for putting in the work to do these I think you told us the runtime on the 450-lumen XP-G before, but I forgot.
    I used AW2900 Mah battery for my runtime test. At 1.5 hrs of continuous run, the light was still very brght with the battery reading at 3.48 volt. At 2 hrs, there was some drop in lumens and the battery was at 3.2 volt. I'll say it is good for at least 1.5 hr to 2 hours.
    "Difference between a well dressed cyclist riding a two wheeled bicycle and a badly dressed cyclist riding a Recumbent is only a-tire"
    _______________________________________________________________________
    Some people got their head so far up their butt such that the only thing they hear is muffle when trying to explain anything to them! I only wish they take it out sometimes to smell the roses.

  5. #5
    Senior Member balto charlie's Avatar
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    Thanks Colleen, nice shots. The last picture is hilarious, better than daylight! I like the light from the MS 900 and Pocket. My setup!! I just used my Rocket for the first time this AM. I used it solo on the second bike of the commute. The sun was just rising so it wasn't very dark to really see how good it was. I was a little confused when I turned it on. It has 3 settings but turns off after each setting. Kinda strange. I wish it would just go from low-med-high-off. I had to stop the bike, put my hand in front of the light to determine brightness, always use brightest unless time becomes a factor. It would be easier to do in the total dark but at daybreak a little tougher, no biggie tho'. This light is a lot easier to attach than MS light.
    Questions:" Can the Li-Ion batteries do OK if left overnight in the freezing cold on the bike in the bike locker? (not talking Bay area cold, talking "real" cold ) I'm thinking about leaving this bike set up so when I get off the train I can unlock the locker and ride away. I'll keep the MS on the other bike for the first leg of my commute(this will be out in the cold during the day as well).

  6. #6
    I am a caffine girl colleen c's Avatar
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    Quote Originally Posted by balto charlie View Post
    Thanks Colleen, nice shots. The last picture is hilarious, better than daylight! I like the light from the MS 900 and Pocket. My setup!! I just used my Rocket for the first time this AM. I used it solo on the second bike of the commute. The sun was just rising so it wasn't very dark to really see how good it was. I was a little confused when I turned it on. It has 3 settings but turns off after each setting. Kinda strange. I wish it would just go from low-med-high-off. I had to stop the bike, put my hand in front of the light to determine brightness, always use brightest unless time becomes a factor. It would be easier to do in the total dark but at daybreak a little tougher, no biggie tho'. This light is a lot easier to attach than MS light.
    Questions:" Can the Li-Ion batteries do OK if left overnight in the freezing cold on the bike in the bike locker? (not talking Bay area cold, talking "real" cold ) I'm thinking about leaving this bike set up so when I get off the train I can unlock the locker and ride away. I'll keep the MS on the other bike for the first leg of my commute(this will be out in the cold during the day as well).
    That clicky switch can be a little confusing. You can change mode without turning it off. Right after you press the switch fully to turn it on, you can half click to go to different setting. If you stay in one setting longer than a second or two, you still can change mode without turning it off. You can do that by 1/2 clicking the switch twice to change to the next mode then do the 1/2 click one time for each mode change. Also there should be a second switch that was included with the light. That switch might be a reverse click or something like that. I don't recall exactly how that switch works but I think that one does requires a full click. Your light may have that switch install instead of the other.

    I'm not sure about the cold temp with the light left outdoor. It doesn't get that cold here. Those LiIon battery should handle the cold well but I'm sure at some point, it will have a lower performance at a low temperature. I have thought about putting my light in my freezer and than try to run it just for the heck of knowing. If you do try it out, let me know how it goes, it will be good info.
    "Difference between a well dressed cyclist riding a two wheeled bicycle and a badly dressed cyclist riding a Recumbent is only a-tire"
    _______________________________________________________________________
    Some people got their head so far up their butt such that the only thing they hear is muffle when trying to explain anything to them! I only wish they take it out sometimes to smell the roses.

  7. #7
    Senior Member balto charlie's Avatar
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    Duh, forgot about the half click for the switch. Fenix uses that to get into the blinky mode. Don't know why I forgot.
    Last night I read a little about leaving Li-Ion batteries out in the cold. Apparently they do OK until temps get really low. I read this from Battery University:
    Lithium-ion works within the discharge temperature limits of -20C to 60C (-4F to 140F). The performance is temperature based, meaning that the rate capability at or below -20C is reduced due to the increased impedance of the electrolyte. Discharging at low temperatures does not harm the battery. Lithium-ion may be used down to -30C (-22F) with acceptable results. Larger packs will be necessary to compensate for the reduced capacity at these temperatures. It is not recommended to discharge lithium-ion at temperatures above 60C. A high discharge rates combined with elevated temperatures can cause self-heating, an effect that could permanently damage the separator and electrodes of the cells.

    So reduce capacity but acceptable results. I'm going to try since I have an extra 2900 mah battery as a spare.

    FWIW: we got snow/ice last night and my studded tired bike is being rebuilt!! So I drove today, hated it. Hopefully I'll have the studded bike back on the road by the weekend.

  8. #8
    Senior Member balto charlie's Avatar
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    Quote Originally Posted by balto charlie View Post
    Questions:" Can the Li-Ion batteries do OK if left overnight in the freezing cold on the bike in the bike locker? (not talking Bay area cold, talking "real" cold ) I'm thinking about leaving this bike set up so when I get off the train I can unlock the locker and ride away. I'll keep the MS on the other bike for the first leg of my commute(this will be out in the cold during the day as well).
    Quote Originally Posted by colleen c View Post

    I'm not sure about the cold temp with the light left outdoor. It doesn't get that cold here. Those LiIon battery should handle the cold well but I'm sure at some point, it will have a lower performance at a low temperature.
    To answer my own question about extreme temps and Li-Ion batteries. I have been leaving my Rocket XPG-R5 with the 18650 Li-ion battery on my bike overnight this winter in an unheated bike locker. Thus it was exposed to cold temps but not ice/snow except when I ride. Temps have been in the single digits (5F/-15C)often. It seems to have no real affect to the battery and light. I am getting about a 1.5-2 hour run time with 2900 mah. I don't have the proper tester but have decent eyes and the light is still very bright.

  9. #9
    I am a caffine girl colleen c's Avatar
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    Quote Originally Posted by balto charlie View Post
    To answer my own question about extreme temps and Li-Ion batteries. I have been leaving my Rocket XPG-R5 with the 18650 Li-ion battery on my bike overnight this winter in an unheated bike locker. Thus it was exposed to cold temps but not ice/snow except when I ride. Temps have been in the single digits (5F/-15C)often. It seems to have no real affect to the battery and light. I am getting about a 1.5-2 hour run time with 2900 mah. I don't have the proper tester but have decent eyes and the light is still very bright.
    I guess I never have to worry about cold weather performance from my AW2900

    BTW, just FYI,make sure you recharge those battery indoor at room temp.
    "Difference between a well dressed cyclist riding a two wheeled bicycle and a badly dressed cyclist riding a Recumbent is only a-tire"
    _______________________________________________________________________
    Some people got their head so far up their butt such that the only thing they hear is muffle when trying to explain anything to them! I only wish they take it out sometimes to smell the roses.

  10. #10
    Cyclologist Plutonix's Avatar
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    Quote Originally Posted by colleen c View Post
    BTW, just FYI,make sure you recharge those battery indoor at room temp.
    Just to be clear, it is important to let the cells warm up to room temp first to avoid damage to the cells.

    Thanks for the pics! Very impressive.

    I was testing my XPG R5 against my old Trustfire 801 and I cant really see a huge difference. The TR-801 is smaller with a ~16mm front vs the XPG with ~25, so the TR801 throws a smaller spot making it seem brighter. Otherwise the XPG blows away everything else I've compared it to including some P7s. Next, I need to test runtimes.

    thanks again
    Man does not live by one bike alone.
    2010 Trek 4500
    2011 Trek 7.5 FX

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