Tag: 21700 Flashlight

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Sofirn SP33 V3 Review (3500 Lumens, Multi battery compatible, $32 price tag)

Sofirn has made an upgrade to their SP33 light after taking feedback from the flashlight community and come out with the SP33 V3 edition. It can use a several sizes of batteries such as a 26650, 18650, and even 21700’s. It features a Cree XHP50.2 at 3V LED and produces 3500 lumens in a pretty compact light and a very budget friendly price. Thanks to Sofirn for sending this to me to check out.

Sofirn is offering 36% off the SP33 V3 that’s available from Amazon by using the coupon LiquidRetro combine that with the click off coupon to save a total of 36% brining this to $32.24 before tax. Get it at https://amzn.to/32M5SoH

 

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Packaging & Accessories

 The SP33 has a bit of a more retail looking box then we have seen from them in the past. It’s a black and orange hanger box but it doesn’t have a photo of the light on it, just a night shot showing a very bright flashlight. Accessories that are included with the SP33 V3 Kit are The 5500mAh 26650 battery, 18650 battery adapter tube, USB-A to C charging cable, manual, and a lanyard with a couple extra o’rings. 

 

Construction

The SP33 V3 is made of 6061 aluminum and hard anodized in black. Machining is good for the price range, with no major concerns. Starting at the tail cap, it has a crown and one side has 2 holes for a lanyard attachment point. They are just a little to small to easily fit paracord in, but you might be able to if you are patient and creative. Knurling is straight and there are a few flats in place for style. This is different from the rest of the light but provide function. Inside there is a single short fairly stiff spring that provides compatibility with the many different battery types this light supports. Threads are ACME cut and were dry in my example.

The body tube is reversible and has a decently thick walls. There isn’t a place for a clip but that’s ok for a light of this diameter in my opinion. The knurling is standard diamond knurling and is done in four panels around the light and is of medium texture.

The head is a solid piece. In the center you have the flat plastic e-switch button with an LED in the middle used for power indication. Around the hexagon there are small areas milled in to help with cooling and give style. Opposite the button is the USB-C port for recharging. The silicon cover here is a bit large and does protrude slightly from the lights back, enough so it won’t sit flat on this port but in the hand this works fine and stays out of the way.

The V3 features a deeper stainless steel bezel with a few short but long crenelations. This has been lengthened on the V3 version. The lens looks to be uncoated mineral glass and is fairly thick. The reflector underneath is deep with an orange peel.

 

Size & Weight

I measured the length of the light at 126mm, maximum diameter at 37.5mm, minimum diameter at 32mm. Weight with the included battery is 229g. 

I don’t have a lot of other great 26650 lights that are similar sized to compare it to. What I do have is the Wowtac A4 V2 I reviewed recently. It’s similar in length and diameter but the head is much larger. I also have the Sofirn SP36 I reviewed last year, its similar in length but has more diameter due to it’s 3 18650 batteries. 

Retention

Not much to say on retention here, there isn’t a place for a clip on the light, and it doesn’t come with a holster. The tail cap does have a place for a lanyard to attach if you wish. The light does tail stand without an issue.

 

LED & Beam Shots

V3 of this light is using a Cree XHP50.2 LED at 3V instead of the 6V version of this led. Tint is listed at between 6000-6500k, so cool white. On lower powers I do notice a bit of green tint shift on my example but it’s minimal. On higher powers you do notice tint shift across the beam. I would categorize the light as an all purpose beam, It’s fairly wide and the hotspot is so broad it’s not a thrower, yet it goes a good distance as you can see in my night shots. Sofirn quotes a throw of 275 meters and I think that’s a good number that’s in the ballpark.

V3 is using a FET driver instead of boost driver meaning it’s drawing more current from the battery thus the higher turbo output that’s seen here. You are going to want to use a good high quality high drain flat top battery with this light for maximum performance. It can accept 26650’s of all types, 18650’s of all types with the included spacer, or unprotected flat top 21700 batteries. The light has PWM on all modes according to my scope and solar cell setup. That said it’s pretty fast and my eyes or camera don’t notice it. 

 

Output is listed as:

  • Turbo 3500 Lumens
  • High 1600 Lumens
  • Medium 450 Lumens 
  • Low 150 Lumens
  • Moon 1 Lumen

 

Heat and Runtime

The SP33 V3 features Advanced temperature regulation without timed step downs, instead output will decline with the drivers internals reach 55C. Brightness will increase again when temps decrease, and we can see this in the runtime graph, as it’s a very seesaw motion. On average you’re seeing maybe a 20% swing in relative output over the life of the battery after the initial turbo step down. I didn’t notice it unless I was really focused on it on a 25 minute walk with the light. Turbo did start stepping down due to heat at 1 min 45 seconds, taking a little over a minute to step down to 18% relative output to cool. From here you can see on the graph it went up and down in terms of output as the flashlight regulated its own heat.

Total runtime on the included 5500mAh battery was 3:24:00. FL1 was at 3:11:00 and the maximum temp I saw during my runtime on the exterior was 48C or 118F so definitely very warm. All temps were taken at my ambient room temp of about 25C.

 

User Interface

 This light has 2 UI modes, default mode (mode 1) is a stepped mode that works logically. It has moonlight, low, medium, and high modes with memory and Turbo without. A single click turns the light on from off, and holding the button down cycles through modes. Long press when off turns on Moonlight mode and double click goes to Turbo. Triple click to go to SOS/blinking modes.

The second UI mode is a ramping mode. To switch between the 2 modes when the light is on do a quick quad press. Ramping is like many other ramping modes with a flash on both the top and bottom end. For me while I like being able to set brightness exactly where I want it, I don’t love the speed of the ramp here, it’s a little on the slow side. 

There is an electronic lockout when the light is off just quad click quickly. You can also mechanically lock it out with a slight twist of the tail or body tube. This is useful for such a powerful light os you don’t burn a hole in a bag or coat. 

 

Recharging

The light isn’t picky on the size of batteries used in the light diameter or size wise. It can accept 26650’s of all types, 18650’s of all types with the included spacer, or unprotected flat top 21700 batteries. The later having the most slop in the tube due to not including an appropriately sized spacer. I used the supplied 5500mAh Sofirn 26650 battery for my charging tests. LVP came in on the light at 2.895V, so a little lower then I prefer but acceptable. The battery measured as fully charged at 4.15V. 

The light does use USB-C for recharging which is nice to see. However it requires a USB-A to C cable (Supplied) to charge, and isn’t compatible with a C-C cable. When charging the small LED in the center of the button blinks red, and goes blue when charged. From LVP to full the light took 3 hours, 30 minutes. Maximum charging rate was 1.7A. 

 

Pro’s

  • Great budget friendly price for a lot of light in a good overall package.
  •  Is available in a few different versions, and battery options.
  •  UI is more “beginner friendly” than Anduril firmware.

 

 

Con’s

  • Still not fully utilizing USB-C to C, requires a USB-A to USB-C cable to recharge.
  • Very active thermal controls, with a good amount of change in output. 
  • No Neutral White tint option.

 

Conclusion

The Sofirn SP33 V3 is a low cost light with a lot of Output. Sofirn lists the light as making 3500 lumens. It runs on 26650, 18650 and some 21700 batteries so it’s widely compatible with the 3 most popular battery sizes today. 

 

It has features not usually found in this price category like USB-C charging (not compatible with USB-C PD (C-C) charging), active thermal controls, and a stainless steel bezel. The active Thermal controls are pretty reactive but they are smooth and I don’t notice it with my eye as much as the graph shows. I wish it was more widely available in Neutral white, they list it as an available option on their AliExpress store but I don’t see these available from other retailers. 

 

For the money especially with the discount Sofirn has provided makes this a really great value for the complete kit. It fits well in my hand and produces a ton of light. I can easily recommend this as a great high output budget light to pick up.

Sofirn is offering 36% off the SP33 V3 that’s available from Amazon by using the coupon LiquidRetro combine that with the click off coupon to save a total of 36% brining this to $32.24 before tax. Get it at https://amzn.to/32M5SoH

 

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Klarus G15 Review (4000 Lumen EDC Flood, 21700, Cree XHP 70.2)

Welcome to 2020 and for my first review of the year I have the new Klarus G15 a small form factor 21700 EDC style light capable of upto 4000 lumens on Turbo from it’s Cree XHP 70.2 LED. Thanks to Klarus for sending me this early sample for review and evaluation. 

 

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Packaging and Accessories

Packaging here is a nice high quality cardboard box with a picture of the light in front being part of the model number G15. The sides list the battery, capacity, and charging speed, and a highlight of the specs, including the 5 year warranty. On the back you have a more detailed spec chart and list of features. The light is IPX 8 water rated.

Included accessories are the Light itself, Klarus Branded 5000mAh button top protected 21700 battery. It’s listed as a 15A capable battery. The battery itself is long coming in at 74.7mm. Also included is a spare oring, Klarus branded lanyard, Felt pouch, manual and MicroUSB charging cable. 

 

Construction

The light is made from aluminum and anodized a smooth fairly glossy black. The tail is flat allowing for the light to tail stand, but it’s non magnetic. The tail has been cut on the side to allow for the lanyard to attach. The body and tail are all one piece, with the long clip only attaching on the rear section. It allows for deep carry and it’s fairly stiff. The milling on the body tube to provide texture looks like the profile for an involute gear and then has 6 flats milled into the light. I like the pattern here, it’s a little different, provides good grip without being too aggressive. The flashlight only disconnects between the head and the body. The threads are raw aluminum, and beefy square cut with grease.

 

 

The head features the same button we saw on ST15R and XT21X in 2019. It’s a silicone button with an illuminated sliver of light around it that indicates battery status and goes Green/Red/Yellow. There is minimal milling on the sides for heat dissipation. Opposite the button is the flush fitting silicone port to protect the MicroUSB charging port. It’s at a standard depth and there is plenty of clearance for larger cables to fit. The head has minimal branding and labels on it, and light bronze color. The front bezel is smooth, and it looks like it will unscrew with the right tool. The lens is anti reflective coated glass, surrounded by a deep orange peel reflector with the large XHP70.2 LED at the center.

 

Size & Weight

I measured overall length of the Klarus G15 at 122mm, maximum diameter in the head at 27.5mm between the button and the charging port, and minimum diameter on the body at 23.24 between flats. Weight with the included battery and clip is 142.1g. 

Looking through my light collection I don’t have a ton of 21700 sized lights that are super comparable here. Lights that I have that are similar are most often using an 18650 or end up being larger. I settled on comparing it to the Olight M2R Pro since they use the same battery and are physically similar. The Olight is a bit longer here, and heavier and is more tactical in nature. It’s also more of a thrower where the G15 is more about flood. 

 

LED | Beamshot | Runtime

The Klarus G15 is using the Cree XHP 70.2 LED in a cool white 6500k tint. Being a 70.2 LED there is tint shift across the beam but it’s not as dramatic as I have seen from a few other lights. There is a slight increase in intensity in the center but this is more of a flood style light then a thrower. The spill is very wide and fades into nothing without a cutoff. 

Mode Spacing here as you can see in the table below is ok but could be improved. There is quite a bit of difference to the eye between medium at 500 lumens and high at 2000 lumens. An additional mode in between would be nice. That said to the eye here is a difference between high at 2000 lumens and Turbo at 4000 but it’s not nearly as much as you might think. 

 

Brightness Outputs from Klarus

Specs Turbo High Med Low Moonlight Strobe Beacon SOS
Brightness 4000

lumens

 2000

lumens

 500

lumens

 100

lumens

 1

lumens

 4000

lumens

 500

lumens

 500

lumens
Runtime 1.2

hours

 1.5

hours

 6

hours

 28

hours

 200

hours

 2

hours

 120

hours

 18

hours

My runtime’s didn’t match Klarus’s all that well. For my first runtime test I started the light on Turbo uncooled and the light steps down pretty aggressively quite quickly about 4 minutes before starting a seasaw motion as the light heated up, and them stepped down to cool off but then what was nice is that it went brighter again as thermals and battery power allowed. The average output for the first hour was somewhere around 60% relative output. The next hour was very stable at about 45% output, before the light started to step down slowly and small bumps at first before LVP kicked in at about 185 minutes of total runtime. Other major manufactures, namely Olight have started to be very honest about what their high lumen lights can do before stepdown and I believe Klarus should do this as well, it would be more honest then to suggest their lights can do 1.2 hours on turbo or 1.5 hours on high. Reality is no light can do this but it’s not obvious to non flashaholics. 

Overall heat was well managed with the active thermal controls here. At 1 minute I measured 92F, at 2 minutes at 98F, and at 10 minutes I measured 96F. LVP kicked in at 2.688v which is lower then I would like to see. 

 

UI

UI here is simple and straightforward and it has 8 total output modes. 5 of those modes are constant on, and 3 are forms of blinking. From off, long press on the button to get to moonlight mode at 1 lumen. Press again and hold to get to low, keep pressing to cycle through low, medium and high. Double click to go to turbo. Tripple click to go to the blinking modes. 

 

The light also features memory mode for modes other then turbo, moonlight, or the strobes. It also had lockout mode, but I personally just break contact with the battery as it’s easier and faster. 

 

Recharging

The light recharges with a standard MicroUSB cable, this is a little frustrating given the price of the light and that it’s a new release for 2020 where USB-C should be the standard. I recharged the included 5000mAh battery from LVP at 2.825V to Full at 4.13v in 3 hours and 35 minutes with a maximum charging speed of 1.99A. As the battery capacity filled up charging slowed down as expected. I saw no problems with the built in recharging on this light. 

 

 

Pro’s

  • Compact size for a 21700, nice fit and finish
  • I enjoy the new gear tooth milling in the body
  • Easy interface
  • Active thermal controls.

 

Con’s

  • MicroUSB instead of USB-C, at least the charging speed here is fast at 2A
  • Pretty cool LED tint with some of the characteristic XPH 70.2 tint shift across the beam

 

Conclusion

If you are looking for a compact 21700 style EDC flood light with an electronic switch up front, the G15 could be a good choice for you. It was a surprise to see active thermal management here that allowed the light to get brighter again after step down after it cooled off. Not enough lights do this in my opinion. I like the new texture here on the body of the light, hopefully it’s something that stays, I think it’s just about perfect for EDC, not too much to rip up your hand or pocket but definitely better than standard diamond knurling. 4000 Lumen turbo mode here isn’t quite as impressive as the numbers suggest, it’s not significantly different from the high of 2000 lumens. That said it’s really a light that’s best run on the lower output modes anyways for a more useful runtime. Hopefully in 2020 we see Klarus switching to USB-C (That support USB-C to C) in their higher priced lights and we can be hopeful that we will see something other then cool white too for us enthusiasts like myself that prefer warmer and neutral tints. With all that said I can recommend the Klarus G15 with reservations.

 

Thanks for watching to the end of this video and continuing to support me. Without your views, comments, and likes it wouldn’t be possible for me to continue to bring videos like this to you guys. I look forward to 2020 being a fun year and I have a few ideas for giveaways and other fun events for those of you who are viewers and followers on social media of the channel.  

Full Image Gallery on this review https://imgur.com/a/9b3UVcV

 

Pickup the Klarus G15 at Battery Junction http://bit.ly/2udnN8F 

Read more about the Klarus G15 at https://www.klaruslight.com/Products/GSeries/724.html