[turboBB]

Crelant's 7G10 is currently one of the few lights endowed with Cree's MT-G2 LED. While this particular emitter isn't new, its adoption for portable lighting use has only recently begun in earnest.

While it's still early to say what the impact will be, I suspect that we'll start seeing this emitter proliferate to all form factors of flashlights. For now, let's see what the 7G10 can do with it...


MFG FEATURES & SPECS
MSRP: $188USD

Specifications:
- CREE MT-G2 LED with 50 000 hours life span.
- Maximum output: 1860 lumens (ANSI FL-1 standard)
- High efficient constant current circuit and output-luminance
- Durable, custom-designed Microcontroller drive circuit
- Side switch and mode changing infinitely variable brightness
(Hidden Strobe and SOS,quickly click side switch twice).
- Working voltage: 5.4V--12V DC
- Battery Types Supported: 4 x 18650
- Runtime:High output at 3 A: 1860 lumens for 130 minutes.
Low output at 0.01A: 1 lumen max for 1000 hours
- Mil. Spec. Type III hard anodized aircraft grade 6063-T6 aluminum alloy
- Color: Black
- Ergonomic grip with anti-roll design
- Bezel: stainless steel
- High performance aluminum OP reflector with concentrated beam shot
- Waterproof: IPX-8 Standard
- Lens: Toughened & ultra-clear coated and anti-abrasive glass
- Dimensions: Length 198mm, Head Diameter 79mm ,body 54mm
- Weight: 644g excluding battery
- Accessories: Lanyard, spare o-ring

Features
- Specially designed for Military, Law Enforcement, Self-defense, Hunting,
Search& Rescue and Outdoorsman
- Side switch with infinite brightness system
- Stainless steel retaining ring on the bezel protects the head from drops and impacts.
- CREE New MT-G2 LED
- Max output of up to 1860 lumens with an effective range of 550 meters
- New hybrid reflector specially designed for CREE LED, which allows for better beam quality, efficiency and throw capability
- Newly designed high efficiency broad voltage drive circuit maintains constant
brightness and maximal runtime
- IPX-8 standard waterproof


PACKAGING / CONTENTS
The 7G10 arrived in a sturdy cardboard box w/decent foam cushioning:


Accessories included are:
Lanyard, 2 x O-Ring and as purchased from md-lightsource a GITD lanyard (attached to light):



VIDEO REVIEW
Here's a vid review of the 7G10 while I flesh out this written review:

Прямая ссылка на видео YouTube

SIZE / HANDLING

L to R: RL3400 | L3 Illuminations K40 | Crelant 7G9 | Crelant 7G10 | ThruNite TN31


BEAMSHOTS
Here's an outdoor vid comparing the 7G10 to a few other larger lights from my collection (please see this thread for full details and distances involved):
[video=youtube;pGXrrpgF03w]https://www.youtube.com/watch?v=pGXrrpgF03w[/video]


RUNTIME & OUTPUT
The relevant battery stats are provided above each runtime graph along with:
- Voltage of the battery at the start and end of the test
- Current draw
- Actual runtime using ANSI FL1 (first in HR and then in M so for the RL3400 on High, read this as 2.6hrs or 156min)
- As of May 2012: Lumens measured on my PVC LMD @ 30 seconds
- Also captured the temperature: ambient, the head/fins at start and the max it reached (fan was used)


Max output measured @ 30 seconds was 1690lms w/4 x RediLast 3400 (note: although I calibrate my PVC LMD before each 0runtime/lumens testing, the ambient temp will also cause deviations in readings).

The 7G10 takes an immediate nose dive upon turn on and drops roughly 200lms in the first few seconds. I wasn't able to match the 1860lms claimed but wasn't too far off at 1690lms. After the drop, it does a milder decline before finally settling into a quasi-regulated mode after 10 min and runs in this state until it drops out of this "regulation" a little before 50 mins. It then starts a general decline and the LVW will briefly kick-in eventually but it's easy to miss if you so happen to not be paying attention to it. Thus it's always best to recharge the batteries ASAP whenever output decline appreciably. The cells measured ~3.09V ea (reminder that the carrier holds cells in 2S/2P config) by the time I manually stopped the run.

Given the 7G10 can run on CR123A's as well, I suppose it's a good thing that it can continue to drain the cells after the LVW kicks in but one just needs to be mindful of that when using LiIon cells.


MORE TO COME...


7G10 GALLERY


=======
7G10 provided by md-lightsource.com for review.