Friday, February 19, 2016

YouOKLight-Portable Flood Light from GearBest- Review

I am testing for you a fully flood portable lamp,with built in rechargeable battery pack.
The lamp is suited for different indoor or outdoor use-for work,camping,emergency,domestic illumination, construction industry,property management,and other activities.
The lamp was provided by GearBest for test and review.

Product page at GearBest-
Product Coupon code: 10WFloodlight

The YouOKLight comes in a cardboard box.

 In real world work environment.

The angle of the light is quite wide.
Sufficient when using the lamp as an ambient light or for some work,that does not require a lot of light.
The beam is quite floody and does not provide high brightness at long distance.
If you are working something serious,you still may need a good headlamp.

The light coming from the LED is Cool White with some bluish tint.

 Two brightness levels- High/Low.

Comfortable handle thanks to the foam tube added. Could be a plus if you plan to carry the light for long periods of time,outdoor.
The size and form are quite good for stable grip.

The YouOKLight comes with two chargers-for indoor and outdoor charging.

Home charging adapter with output 8.4V, 1A

Car charger with output 8.4V, 1A

The main specifications can be seen on the back of the plastic housing.

The Lamp can be detached from its stand.Just have to unscrew the connecting bolt.
There are few openings allowing to mount the lamp to different stands,etc.

On the back of the lamp are mounted both switches and the charging port.
I should note the lack of any marking indicating,which switch is for On/Off and which for mode changing.
It seems easy to remember,but when you are in the dark and even on light is somehow hard to find the right switch.It is needed some time to get used with the position of the switches.
The charging port has water sealing,rubber cap.
Both switches are also protected by clear covers. The light can be used in humid or dusty environment.

Below is a Run/Time graph for High mode.
The maximum battery voltage is 8,4V. The LED is for 6V voltage.
The voltage is limited to the required level by a resistor.
The second-lower mode is also adjusted with another resistor.

Usually so wide angle beam is hard to measure with a regular integrated sphere. I tried to measure the lumen output in a cardboard box and got this numbers:
Max brightness on High mode 556 lumens
Max brightness on Low mode 152 lumens
The used LED is powered with 6,2V on High mode and 5,5V on Low mode.
Current draw on High mode I=750mA (4.65W)
Current draw on Low mode I=190mA (1.045W)

Here is the front of the lamp,disassembled.
Metal frame and thick tempered glass are mounted on the front.

Below is the back of the lamp disassembled.
There is a battery pack of four batteries,glued in the plastic housing.
They seem to be 18650 batteries, 2x2200mAh in series with another two in parallel connection.
The lamp is advertised as 4400mAh,7.4V.
I did not cut the wrapping(yet) to see their brand.

Here is a close up picture of the limiting resistors.

The front glass is protected from dust and water with a thick silicone gasket.

The big LED is mounted directly on the metal housing.There is quite enough thermal paste between them.
The whole back side of the housing is formed as cooling fins.The heat dissipation is quite good.
Two screws ensures tight press for good heat transfer. There are two more threaded holes,but without screws added.
Thick enough wires,well soldered.

The reflector is made of very thin metal.It reflects small part of the light and does not have the purpose to focus the light in small hotspot,so more special reflector is not needed.

Short Video demo

Product page at GearBest-
Product Coupon code: 10WFloodlight

Here are some links to other categories at GearBest.

  Outdoor floodlight: 
  Indoor light:
  More Knives for selection:

I don't make any money from my blog or my reviews. Using the links and coupon codes I post on my blog will only help me,eventually to get new review samples. 
Thanks for your support!


Wednesday, February 17, 2016

Niwalker Aurora C26, Prototype (Cree XP-L HI)(1x26650)

Niwalker C26 Aurora is a relatively compact flashlight powered by single 26650 battery.
Head diameter=43mm
Body diameter=34mm

I did not get any specifications or any other info from the manufacturer,so I will try to just share my impressions of the C26.

As usual,Niwalker shows really well looking design,maybe not the most practical,but definitely pleasure for the eyes and great fit in hand.
The whole construction is made of thick aluminum.
Excellent black anodizing.Matte finish,but it is far from the special heavy matte finish of the MM series flashlights.Yet the actual finish does look high quality and not cheap at all.
There is precisely made,relatively deep knurling on the battery tube,helping a lot with the grip.
As most Niwalker flashlights,the C26 Aurora features an electronic side switch and tripod mount thread on the opposite side.
The side switch again has the periodically flashing green indicator underneath.May be distracting at some moment and of course has its power consumption.
The switch is flat with the surrounding surface and as expected this makes it hard to find in the dark.
Overall Niwalker C26 fits well in hand,comfortable grip,it is easy to carry for a 26650 size flashlight.
My only critique is about the lack of good anti-roll design.
The C26 comes with a new Cree XP-L Hi LED,which in my tests with this ad other flashlights,perform impressively well,providing very well focused beam and good lumen output/current consumption ration.

Parabolic aluminum reflector with diameter 32mm and about as that deep.
Glass lens with anti-reflective coating.

The beam from the C26 is very well focused,reaching great distance for such a small flashlight.
Cool white light.No visible artifacts. Generally,I am very pleased with the beam and found it better than expected.
A beam that actually I could use,indoor or outdoor.

The C26 is designed strictly for unprotected batteries. I was not informed about that and using almost entirely protected batteries,I had a hard time testing this flashlight.
There is no way to fit protected 26650 battery,so I had to de-solder the front spring to release some more space for a battery.
I was able to try Niwalker C26 only with a protected 18650 battery,using some rubber foam to fill the free surrounding space. I had also to not screw the head fully to be able to fit the battery. The battery tube space is really limited just to the standard 65mm and no even an extra millimeter.

I managed to test the UI briefly. No chance for a full runtime test.
Typical for a flashlight from Niwalker,the C26 offers wide range of modes-relatively well spaced.
What I was able to measure using a Keeppower 18650 battery is-
6 constant modes-Turbo2- Turbo-High-Mid-Low-UltraLow
plus Strobe mode.
Brightness measured by me-
6 mode 1230 lm
5 mode 554 lm
4 mode 290 lm
3 mode 107 lm
2 mode 19 lm
1 mode 3 lm

StandBy current draw is very high, 5.5mA while the green indicator is off, 13.5mA when the indicator is On. Both measurements are in milli Amps,which is very high for StandBy drain. It is recommend to lock-out the tailcap after every use.Unfortunately,as I already mentioned,protected batteries can not be used.

Size comparison-
Thorfire VG10(a small 18650 flashlight), Nitecore EC4S(2x18650), Niwalker Aurora(1x26650), Orcatorch WR10(1x26650)

Beam shots
~5 meters distance, 1/6sec

~5 meters distance, 1/50sec

~5 meters distance, 1/250sec

~5 meters distance, 1/1000sec

All 6 modes