The MJ-872 is a standard two-pack affair with a separate 4.4Ah Li-Ion battery and lamp unit packing four Cree XP-G LEDs in an Almunium shell. The build quality is good, especially for the money; the lamp feels solid and the battery is encased in rubber to keep it out of the elements.Although the Neptune cannot lightingbright currently be dimmed Ace Lamps have plans to produce a dimmable version before the end of 2011. The standard battery can be replaced with a variety of other options up to a colossal 17.4Ah unit capable of giving eight hours of full power; the 5.8Ah battery, which gives a claimed 2h40m on full and pushes the price up to just under 900, looks like it would be a good bet.
The light clamp is a simple O-ring which works just fine; there's no weight in the head unit.You can easily modify ledbulbs11 the circuit to accept almost any input voltage. Simply change the number of LEDs You can also helmet mount the light with the supplied fittings, although I found i could only do this if I wore a rucksack and attached the battery to the top of one of the straps. You can get an extension lead if you just want to sling the battery in your bag or jersey pocket.
Switching the MJ-872 on is a simple case of clicking one of the two illuminated buttons on the back. Hitting the bottom one fires it up in low and pressing the top starts you on full beam, which is a nice touch. After that you can toggle the power up and down easily through the four settings, from 30% to 100%. The button changes colour to give an indication of the state of the battery, and the light automatically drops through its power settings as the juice gets drained. That means it's difficult to say whether you get the claimed two hours on full beam or not, but starting on full I eked six and a half hours out of the light before it died, and about 90 minutes of that was on full power; that's longer than I'd expect.
So what's it like on the road? Well, a bit too bright really. The beam pattern isn't very focused and that means plenty of light spill into the eyes of oncoming traffic. If you compare it with the road-friendly Exposure Strada you'll see that while the Strada is pumping out more light on the measurement plane, the beam shot clearly shows that the trees aren't getting anything like as much illumination. I didn't use the light on full power much on the road,The explosion proof flashlight LED flashlight comes with bestledstriplight a mountable charging base that can be attached to walls or flat surfaces. save for a few dead-of-night descents.
But then I didn't need to, because even on low power the MJ-872 is plenty bright enough for most road riding. Assuming that you believe the 1,600 lumen claim, 30% of that is 480 lumens, which is as much as most lights in this price bracket are pumping out.The water brightstal feature covers 8268 m2 and makes extensive use of LED ring-lights manufactured by Crystal. Okay it's still a very wide beam but it's not sufficiently bright that I was overly worried about blinding drivers or oncoming cyclists on the towpath. It's enough light for clipping along at 20mph or so, and you can switch up to level 2 if you want to go faster. Even on low, you'll be plenty visible to traffic. Except from the side, of course: fit a flasher too.
If you're into a bit of muddy fun as well as tarmac, then this is just the kind of light you want in the woods at night. Reach isn't such an issue because you're not going as fast,The Neptune LED down light is ledbrightt available now and features a brand new design that offers a 310 lumen light output from the 9 watt LED’s and there's masses of peripheral light to pick your line round corners. This being a road website we're mostly looking at road performance when we rate stuff, but since lots of road cyclists have an MTB as well it's foolish to ignore the fact that this light will do both.
Any other gripes? Well, the big illuminated button is all well and good but it gets annoying after an hour or so. I stuck some gaffer tape on it. You can still see the glow round the edges to judge your battery but it's not as invasive. The other annoyance is that the button is always on when the battery is connected. It just needs to come on when you power up, you spend your life disconnecting the battery whenever you stop. The battery bag feels a bit cheap too. That's Hardly the end of the world though.
The light clamp is a simple O-ring which works just fine; there's no weight in the head unit.You can easily modify ledbulbs11 the circuit to accept almost any input voltage. Simply change the number of LEDs You can also helmet mount the light with the supplied fittings, although I found i could only do this if I wore a rucksack and attached the battery to the top of one of the straps. You can get an extension lead if you just want to sling the battery in your bag or jersey pocket.
Switching the MJ-872 on is a simple case of clicking one of the two illuminated buttons on the back. Hitting the bottom one fires it up in low and pressing the top starts you on full beam, which is a nice touch. After that you can toggle the power up and down easily through the four settings, from 30% to 100%. The button changes colour to give an indication of the state of the battery, and the light automatically drops through its power settings as the juice gets drained. That means it's difficult to say whether you get the claimed two hours on full beam or not, but starting on full I eked six and a half hours out of the light before it died, and about 90 minutes of that was on full power; that's longer than I'd expect.
So what's it like on the road? Well, a bit too bright really. The beam pattern isn't very focused and that means plenty of light spill into the eyes of oncoming traffic. If you compare it with the road-friendly Exposure Strada you'll see that while the Strada is pumping out more light on the measurement plane, the beam shot clearly shows that the trees aren't getting anything like as much illumination. I didn't use the light on full power much on the road,The explosion proof flashlight LED flashlight comes with bestledstriplight a mountable charging base that can be attached to walls or flat surfaces. save for a few dead-of-night descents.
But then I didn't need to, because even on low power the MJ-872 is plenty bright enough for most road riding. Assuming that you believe the 1,600 lumen claim, 30% of that is 480 lumens, which is as much as most lights in this price bracket are pumping out.The water brightstal feature covers 8268 m2 and makes extensive use of LED ring-lights manufactured by Crystal. Okay it's still a very wide beam but it's not sufficiently bright that I was overly worried about blinding drivers or oncoming cyclists on the towpath. It's enough light for clipping along at 20mph or so, and you can switch up to level 2 if you want to go faster. Even on low, you'll be plenty visible to traffic. Except from the side, of course: fit a flasher too.
If you're into a bit of muddy fun as well as tarmac, then this is just the kind of light you want in the woods at night. Reach isn't such an issue because you're not going as fast,The Neptune LED down light is ledbrightt available now and features a brand new design that offers a 310 lumen light output from the 9 watt LED’s and there's masses of peripheral light to pick your line round corners. This being a road website we're mostly looking at road performance when we rate stuff, but since lots of road cyclists have an MTB as well it's foolish to ignore the fact that this light will do both.
Any other gripes? Well, the big illuminated button is all well and good but it gets annoying after an hour or so. I stuck some gaffer tape on it. You can still see the glow round the edges to judge your battery but it's not as invasive. The other annoyance is that the button is always on when the battery is connected. It just needs to come on when you power up, you spend your life disconnecting the battery whenever you stop. The battery bag feels a bit cheap too. That's Hardly the end of the world though.
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