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SpoilerI was excited to try out this light thanks to two features that make it stand out from the competition - the huge output for the form factor, and the dual tail switch.
The dual tail switch is great. In the outdoor mode, it gives quick access to momentary high, momentary low, constant high, and constant low. In a pocket sized light, momentary access to two commonly used modes is great for pulling it out and taking a quick peek at something, whether it’s finding some socks in the morning, looking for the keys you dropped, plugging in a cable under a desk.
The output on the light is definitely high, but the light is much larger than most AA offerings, and even larger than some 18650 lights. This probably necessary to make the dual tail switch work, but it makes the high power less impressive. I also noticed some flickering on the highest mode.
I’ll also note that being able to quickly charge the cell with a micro-USB cable, which I’m likely to have with me everywhere I would need to top it off, is very convenient.
SizeThis light is certainly large. It’s both wider and longer than other AA lights I have, and even larger than some 18650 lights - although those don’t offer the dual tail switch setup this light does. I measured it at 108.5 mm long, and 23.4 mm at the widest point (the hexagonal portion just behind the head).
BuildThis light is large, but it feels extremely solid as a result. The bezel, like the rest of the light, is made from black anodized aluminum. It’s smooth without crenelations, and has a ‘hot’ warning etched into the coating. The opposite side of the light has some regulatory markings, which aren’t shown in the image. Looking just further down the light, you can see the larger hexagonal portion behind the head that works as a great anti-roll feature. The small circle on that section is a status LED that will turn green, yellow, or red when the light is switched on to indicate cell voltage.
What’s IncludedThe light ships in a black and red cardboard box. All the accessories and the light are in the box, and the light is held in a plastic cradle.
- Klarus XT1A (2018)
- 14500 cell with micro-USB charging
- Pocket clip
- Micro-USB charging cable
- Spare o-ring
Ergonomics and RetentionThe added size of the light means it fits well in the hand, and tail switches are known for being easy to access with one hand - no complaints about ergonomics with this light. The two tailcap buttons are different in shape, size, texture, and elevation, so it’s easy to tell them apart by feel.
There’s a single hole in the tailcap to attach the included lanyard. The clip can only be attached for head-down carry, and is not particularly deep, but iit does the job well. The shape is good, and I had no issues clipping it on to my pocket.
Modes and InterfaceThis light actually has two independent user groups - outdoor and tactical. The light came with the outdoor mode preset, and it’s the one I prefer to use. In the outdoor group, there are 3 modes - low, mid, and high. The UI is as follows:
- The clicky switch turns the light on in high, and can be depressed slightly for momentary high. Repeat this press to turn off.
- The paddle switch serves as momentary low, or will turn the light on in low if held for a few seconds. Repeat this long press to turn off.
- Once on in low or high, the paddle switch cycles through the brightness levels.
- There’s also an SOS flash that can be accessed by long pressing the paddle switch after turning the light on with the clicky switch - I like that this mode is hidden.
There’s also the ‘tactical’ UI. This caters to a lot of people looking for a tactical light, but isn’t what I personally want out of an EDC light. In this UI:
- Clicky switch starts in turbo. Paddle cycles modes once on.
- Paddle is momentary strobe. Holding down for a few seconds will leave the light on in strobe. Once on, paddle switch cycles between high and strobe.
This is great for having the most disorienting modes at a single press, if that’s what you need.
One thing that needs to be discussed is the mode spacing - with the included cell, the modes claim to be 5, 80, and 1000 lumens. That’s a huge jump from medium to high. In practice, I really don’t mind this. It really encourages me to use the lower modes, and I find the quick access to both low and high extremely convenient. That being said, I would probably prefer a second ‘mid’ mode be added in there somewhere. With an AA cell, the modes change to 5, 80, and 300, which I much prefer.
Light Quality and BeamThe emitter chosen in this light is a, XP-L HD, set in a smooth reflector. There are emitters I like better than the XP-L, but I think it’s a good choice for this kind of light. It has cool white tint, but the beam is quite functional.
One thing to note is I saw some very noticeable PWM on high mode only with both the included 14500 cell and my own NiMH cells. I’ve never seen a light that flickered only on the highest mode, so I don’t really know what the cause is. Since I mainly used the lower modes and only used high for “what’s hiding in that bushes” sort of quick peeks, it wasn’t a total deal breaker - but it is noticeable on my sample for sure.The lower modes were smooth, with no visible flicker or PWM.
Power and RuntimeWith the included cell, the light ran on high well over the hour claimed on the label. There’s a large step down about 10 minutes in, but that can only be expected in a light this size managing the heat from a 1000 lumen output. After that the run was steady at about 40% until it stepped down to a very dim moonlight. In this mode it could be reset to a brighter level, but would quickly drop back down. The test was stopped manually as the indicator LED was blinking rapidly to indicate low voltage.
ChargingThe included cell has a handy micro-USB port built in to the cell itself. Charging from a dead cell took just over 3 hours to complete, and ran at just over 0.3A. This is a low charge current, but it’s safe for this smaller cell, and will help maintain the cell capacity. I would say this is a good charge curve. Note that the voltage displayed on the graph below is measured at the USB input, not at the cell terminals, and is basically meaningless.
- Great shortcuts to momentary high, momentary low, constant high, constant low in outdoor UI
- Configurable UI lets you use tactical mode if you prefer that
- High output for an AA sized cell
- Full kit - comes with a cell with built in charging
- Runs on either a high powered 14500 or an easy to find AA cell
- Flicker on high mode
- Mode spacing has a big jump between medium and high
- Light is very large compared to other offerings with this cell size