Lumapower MRV SE

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Don
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Lumapower MRV SE

Forgot about this one. Time for a review. At the moment gathering data so will tidy this up into a review when I've got the info.

For the price this one deserves about 7 stars on a 5 star scale. See here for the full story. It cost me $5 plus postage.

 

 


At switch-onAt 30 secondsAt 2 minutesAt 5 minutesAt 10 minutesAt 32 minutesAt 60 minutes
Lux Readings1462138013231287125111781094
Calculated lumens325307294286278262243

 

 

 

 

Runtime on high going just now.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Edited by: sb56637 on 02/14/2012 - 08:18 Reason: sb56637 replaced budgetlightforum.cz.cc with budgetlightforum.com via Scanner Search and Replace module.
Don
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Down below 50% but still a lot of light - 617 lux / 137 lumens

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

FlashPilot
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Looking forward to your review. The MRV's have been my most used 18650 lights since I bought them... and also my least expensive 18650 lights.

Don
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FlashPilot wrote:

Looking forward to your review. The MRV's have been my most used 18650 lights since I bought them... and also my least expensive 18650 lights.

 

You really couldn't beat that price! The pair of red/black Ultrafire cells I just ordered cost about the same as two of these.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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Down to about 23% - 294 lux / 65 lumens

 

Stopped the test at 14 microamps as was concerned about the cell voltage. The cell was down to 3V which is low enough for an 18650. Runtime at this point was 2 hours and 10 minutes. Generating graphs now.

 

Medium runtime started - 586 lux / 130 lumens 

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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Runtime done with a grey unprotected Trustfire "2500mAh" 18650. 

http://www.dealextreme.com/details.dx/sku.19770

Oops I see I forgot to put in the runtime percentage. Conventionally runtime is to 50%

 Ultrafire grey "2500mAh" high runtime

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

charlestt
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Not bad runtime there, thanks for doing that Don.

I had mine running for an hour today just to see how hot it got and i was surprised that seeing how bright it is it doesn't get that hot..

Are everyone else's like that? i was easily able to hold mine after an hour on full power without any discomfort.

 

Charles

 

 

 

 http://i776.photobucket.com/albums/yy41/charlestt225/Sig/A1200023-1.jpg" width="159" he

Don
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Still at 67% after 3 hours - 2500mAh 18650 medium 

Down to 420 lux / 93 lumens

 

Heat: Because I don't disturb it during runtimes I couldn't say. But I've not noticed it getting hot in use. When I ran it last night to see how the brightness fared, the whole thing was pretty warm after sitting on the desk for half an hour, but wan't in the hand-burner category.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

XRAYBoY
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You can test it with 2xCR123A?
I not say do
the complete test, but see if it is brighter at first moments with these batteries?

 

With your permission, I stole the plot of data for our forum. Wink

Great job (as usual) Don.

ForoLinternas.com

Don
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XRAYBoY wrote:

You can test it with 2xCR123A?
I not say do
the complete test, but see if it is brighter at first moments with these batteries?

 

With your permission, I stole the plot of data for our forum. Wink

Great job (as usual) Don.

 

Feel free to take any of the data. Most of it probably won't need translation and anyone is welcome to use it for any non-commercial purpose. 

 

I'm happy to try it with 2xCR123A. I'll be interested to see how it gets on.

 

Since it is doing a runtime just now that looks like it is going to take a while, it won't be tonight - I only have one lightbox.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

XRAYBoY
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Ok take your time and thanks.
I use it with the CR123A, but I've been in the car for very specific uses (so far) and mine no longer has the original driver or led.

Just be careful with the 2xCR123A. I do not know the efficiency of the driver but it might warm up considerably more at 6v in continuous use.

ForoLinternas.com

Don
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6 hours 30 minutes on medium 98 lux / 22 lumens. Not bad going. Official runtime to 50% around 5 hours. This is quite impressive. Runtime on low should be quite a long time.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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7 hours. 67 lux / 15 lumens though I'd have thought it was a bit more. Time to stop before I over discharge the cell. Cell down to 2.9V

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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It had just been runnning on medium for seven hours so the pill was slightly warm before the start of the test. IT wasn't any warmer at the end of the test. But then it wasn't any brighter than it was with an 18650 anyway.

Here's a graph of the output for the first minute.

2 x CR123A

 

TimeLuxLumens
Switch-on  1409  313
30 seconds   1289  286
1 minute  1178  261

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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Long. At least long by my standards Wink

Still producing usable light at 7.5 hours.

MRV SE Medium runtime graph

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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Low runtime starting. Back some time tomorrow. Initial output 110 lux / 24 lumens

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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4 Seconds ISO 80

The tree is 17m / 50' away. The tree top is around 21m / 65' away

Control

Control shot

 

High

High

 

High Treetop

High Treetop

 

Medium

Medium

 

Medium Treetop

Medium Treetop

 

Low

Low

 

Low Treetop

Low Treetop

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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102 lux / 23 lumens. Or basically next to no drop. It started out at 110 lux / 24 lumens

I fully expect this one to be going at lunchtime tomorrow - it is just shy of midnight here.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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78% brightness 84 lux / 19 lumens

 

15 hours 80 lux / 18 lumens 73%

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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20 hours and still going strong. 77 lux / 17 lumens. Looks like it will make a day..

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

FlashPilot
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Thanks for all the hard work Don. I really do enjoy these light, as do all the others I have given them to. Do you have a data logging light meter to record your findings or do you do it the old fashioned way? My hat is off to you if you have to hang out all day with a stopwatch, pad and pencil. Wink

Is there a thread where you explain your reporting process? Fun stuff!

Don
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I don't think there is a thread on it. I'll do one soon. It certainly isn't manual - the lux measurements are, the output over time ones certainly aren't. I actually have two cheap datalogging meters though I need to use two PCs to get both of them running - the software that came with them doesn't seem to let me use more than one meter at a time. I run two copies of it, both of them see the same meter. Annoying...

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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23 hours. Still going strong

 

Still 77 lux still around 17 lumens...

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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24 hours

 

Still providing light - wonder how long it'll go on doing so?

73 lux / 16 lumens

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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25 hours

73 lux / 16 lumens

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

XRAYBoY
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You're squeezing the efficiency of the LED now in low.

I can only imagine the runtime in low with a couple of good CR123A (1400mAh each), being able down the voltage until to throw them.

Almost eternal.Laughing  Courage ... can not be much longer (or not).Tongue out

ForoLinternas.com

fishinfool
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Hey Don, when doing these kinds of tests, do you turn them off after a while because of the heat produced?  Do you leave them on during the whole runtime test test period?  Just curious.  Thanks.

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

Don
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fishinfool wrote:

Hey Don, when doing these kinds of tests, do you turn them off after a while because of the heat produced?  Do you leave them on during the whole runtime test test period?  Just curious.  Thanks.

 

On high I stick a fan on them. I own quite a lot of fans from my mad overclocking days.

 

I will touch the light occasionally to see if it is getting silly hot. The MRV never has.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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XRAYBoY wrote:

You're squeezing the efficiency of the LED now in low.

I can only imagine the runtime in low with a couple of good CR123A (1400mAh each), being able down the voltage until to throw them.

Almost eternal.Laughing  Courage ... can not be much longer (or not).Tongue out

 

I don't expect it to still be giving light in the morning - 8 hours from now when I have to go to work again. But maybe it will.

 

And it is an unprotected 18650 so i hope I am not killing a cell.

 

However a 16 lumen (25.5 hours) thrower is not the most useful light in the world - a flood light would be much more useful at that light level. I am wondering how long it will stay lit for though - I will keep it running till it goes out. I thought it would give up about 10 hours ago.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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26 hours. Still going at much the same level

 

72 lux / 16 lumens

 

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

how2
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Don have measured the temperature on the head and body?

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