Courtesy of 4Sevens I have a Quark Pro QP2L-X with Burst Mode for review.
That disclaimer over -
I mean a spec'd 780 lumens from a flashlight? -
this is like a 40-60watt light bulb concentrated out of a flashlight!
Yes, it's only spec'd to be driven at 780 lumens for 1 minute - then it ramps down to 1/2 that 390 lumens - over the next 30 seconds -
that's pretty gradual and probably imperceptible -
most of the time I don't use a flashlight on max for long durations -
so I probably won't even see the ramp down in any real usage.
OK preamble over -
Size - it's a standard 2x CR123 body
Head -
So how bright is it?
The brightest 4Sevens light I have is the 4Sevens Quark AA-R5 - but used with 3V -
ie: on a Quark 123 body (hence the showing in the size comparison pic).
Remember 4Sevens (3V) Quarks have Buck/Boost circuitry -
which means even if I were to use rechargeable LiIon 14500 (for AA size) or RCR123 -
the nominal 3.7V will not make the Quark AA-R5 head any brighter - since the 3.7V would be bucked down to the correct Vf.
OK, ok....
vs. 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
Holy moly!
There is no doubt that the Quark QP2L-X Burst mode is significantly brighter that the Quark XP-G R5 on 1x CR123
QP2L-X High (the 300 lumen mode) vs 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
even on high (300 lumens) it is still brighter than the R5 on CR123.
It is only when dropping down to Medium......
QP2L-X on Medium vs 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
Not surprising, because Medium is spec'd at only 55 lumens.
Specs:
Now the interesting part - for me.....
we know that Rechargeable LiIon batteries will not make a 3V Quark any brighter because of the buck circuit -
but what about using a single LiIon 3.7V (max 4.2V) with this QP2L-X - it is within specs to drive the head
and therefore the 780 lumens Burst mode?
This mean I could use the QP2L-X Burst head on either a single AA body using a LiIon 14500
or a single 123 body using a LiIon RCR123.......
Does it work?
QP2L-X using single LiIon14500 (AA size) on single AA body vs 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
QP2L-X on single LiIon RCR123 on 123 body vs 4Sevens Quark AA-R5 on 1x Lion 14500
It's YES and YES! The Quark QP2L-X will work with a single LiIon - 14500 or RCR123 and it is able to output the 780 lumen Burst Mode -
so one can use the QP2L-X head with either single cell AA or 123 bodies as long as a rechargeable LiIon cell is used and get the Burst mode.
I know I've said this already - 780 lumens out of a pocket flashlight? - like the innovative emitter self-centering mechanism introduced by 4Sevens -
it is good to see 4Sevens maintaining its forefront leadership......
That disclaimer over -
I mean a spec'd 780 lumens from a flashlight? -
this is like a 40-60watt light bulb concentrated out of a flashlight!
Yes, it's only spec'd to be driven at 780 lumens for 1 minute - then it ramps down to 1/2 that 390 lumens - over the next 30 seconds -
that's pretty gradual and probably imperceptible -
most of the time I don't use a flashlight on max for long durations -
so I probably won't even see the ramp down in any real usage.
OK preamble over -
Size - it's a standard 2x CR123 body
Head -
So how bright is it?
The brightest 4Sevens light I have is the 4Sevens Quark AA-R5 - but used with 3V -
ie: on a Quark 123 body (hence the showing in the size comparison pic).
Remember 4Sevens (3V) Quarks have Buck/Boost circuitry -
which means even if I were to use rechargeable LiIon 14500 (for AA size) or RCR123 -
the nominal 3.7V will not make the Quark AA-R5 head any brighter - since the 3.7V would be bucked down to the correct Vf.
OK, ok....
vs. 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
Holy moly!
There is no doubt that the Quark QP2L-X Burst mode is significantly brighter that the Quark XP-G R5 on 1x CR123
QP2L-X High (the 300 lumen mode) vs 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
even on high (300 lumens) it is still brighter than the R5 on CR123.
It is only when dropping down to Medium......
QP2L-X on Medium vs 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
Not surprising, because Medium is spec'd at only 55 lumens.
Specs:
Now the interesting part - for me.....
we know that Rechargeable LiIon batteries will not make a 3V Quark any brighter because of the buck circuit -
but what about using a single LiIon 3.7V (max 4.2V) with this QP2L-X - it is within specs to drive the head
and therefore the 780 lumens Burst mode?
This mean I could use the QP2L-X Burst head on either a single AA body using a LiIon 14500
or a single 123 body using a LiIon RCR123.......
Does it work?
QP2L-X using single LiIon14500 (AA size) on single AA body vs 4Sevens Quark AA-R5 on 1x CR123 (using Quark 123 body)
QP2L-X on single LiIon RCR123 on 123 body vs 4Sevens Quark AA-R5 on 1x Lion 14500
It's YES and YES! The Quark QP2L-X will work with a single LiIon - 14500 or RCR123 and it is able to output the 780 lumen Burst Mode -
so one can use the QP2L-X head with either single cell AA or 123 bodies as long as a rechargeable LiIon cell is used and get the Burst mode.
I know I've said this already - 780 lumens out of a pocket flashlight? - like the innovative emitter self-centering mechanism introduced by 4Sevens -
it is good to see 4Sevens maintaining its forefront leadership......
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