Anker LC90 Flashlight Review – Don’t Believe the Hype

Anker is a popular brand among computer geeks, but can they win the respect of no-nonsense armed citizens, cops and those in the military with its like of flashlights?

I decided to do an Anker LC90 review after I saw the affordable flashlight marketed as a “super bright tactical flashlight” on Amazon. The results may surprise you.

The Anker brand made a fairly good name for itself selling electronics accessories. From battery packs to phone chargers, Anker offers a broad range of products that frequently get excellent reviews. I’ve used some of its gear and found my purchases to be pretty good products for the money.

Anker LC90 review

When I found the company made a 900-lumens torch with an average rating of 4.6 of 5 stars with more than 14,000 Amazon reviews, I ordered one up. I figured this would be a real winner.

Unfortunately, this Anker LC90 flashlight review is an example of why independent testing and skepticism are important, and reviews on an e-commerce site may not be as reliable as you would hope.

General Information

The Anker LC90 is a handheld flashlight with an aluminum body and a zoomable head. A 18650 rechargeable battery (3350 mAh) is included with the light. A micro-USB cable is used to charge the battery while it is in the light.

Anker 18650 battery

The company’s sales page on Amazon describes it as a “Super Bright Tactical Flashlight.” However, the Anker website lists the LC90 in its “home improvement” products.

Anker states the light is dust and water-resistant with an IP65 rating. This means that no dust can get into the sealed flashlight, and it can resist significant water splashing and rain. It is not rated for immersion protection like many true tactical flashlights.

Don’t drop it into a pool, river or puddle. It will probably handle a moment underwater, but at some point, water will make entry and foul up the circuitry.

Tailcap Assembly

I expect that the LC90 is not submersible mainly because of the in-light charging circuitry. Most lights that allow you to charge the battery like this are not submersible because the charging port isn’t sealed.

Anker placed the charging port under the tail cap. The tailcap must be fully removed to access the port, so I had hoped Anker managed to make this waterproof. Alas, the company did not. I’m not sure why Anker failed to make this happen.

At the time of this writing, it sells for $25.99 and is available through Amazon Prime.

Anker LC90 tailcap

Manufacturer Specifications

Anker lists the flashlight specifications in a table that seems to suggest compliance with the FL1 flashlight standard issued by ANSI/PLATO. To me, the icons look very similar to the ANSI/PLATO icons and the table is labeled as “FL1 Standard.” However, the information appeared to not conform to the FL1 standard it claimed. You can see the table on the right side of this review (or above if you are on a mobile device.)

FL1 Table for Anker LC90 flashlight

The ANSI/PLATO FL1 flashlight standard is exacting both in how flashlight performance is to be tested and how that information is displayed to consumers. I immediately observed that the impact resistance rating appeared to be out of compliance with the standard.

Anker lists the impact resistance as 1.5 meters in the FL1 Standard box. However, the FL1 standard as section 2.6.6 (page 12) clearly states that:

Ratings in excess of 1m shall be reported with values rounded down to the nearest whole meter.

This means that if Anker was in compliance with the FL1 standard, the impact resistance should be reported a 1 meter.

When one of the specifications appears to be out of compliance with the standard, it caused me to question if any of the reported information was actually in compliance. So, I contacted Anker’s customer support through the company’s website.

I asked “I was looking at your LC90 flashlight. Can you advise if this was tested in accordance to the FL1 flashlight standard?” I received the following response (highlighting added):

Anker e-mail on FL1 standard

Advertising a product as having passed certain criteria when it has not been tested to that standard is a serious problem. I don’t know why the company allowed this to happen, but in my mind, it casts doubt on all of the products it makes.

Some people might say that Anker printed the information in this way to intentionally mislead consumers. I have no evidence of this. However, I see this as a major problem.

I contacted PLATO via the organization’s website to inquire about Anker’s use of the “FL1 Standard” label and similar icons. PLATO is responsible for enforcing the use of its trademarks and proprietary information. According to an organization representative I spoke with in the past, the organization takes consumer confidence seriously and investigates all potential misuses of its standard.

Unfortunately, I never received a response from PLATO and Anker continues to use a “FL1 Standard” label and similar icons in its LC90 manual (seen here.) For reference, I originally contacted Anker and PLATO in November 2017 and it is now July 2018 when I am writing this.

Light Output

Anker states the LC90 flashlight has a total light output of 900 lumens and a peak beam intensity of 6,500 candelas. This suggests that the light will be bright but spread over a wide area – not in a tight spot pattern.

adjustable beam pattern

However, the head of this light is zoomable. This means you can change the pattern from a flood to a spot pattern. Based on my use of the light, I suspect the candela measurement was taken at the flood pattern. The peak beam intensity of the spot pattern appears to be much brighter than 6,500 candelas.

If you are unfamiliar with what lumens and candela measure, don’t worry: most people are confused by them and some flashlight companies have taken advantage of this over the years.

Lumens measures the total light output from a source regardless of where it may be focused. Candela measures the peak beam intensity – typically that bright center spot – from a light source.

If you think of a bare lightbulb, it may have a high lumen measurement because it puts out a lot of light. Since that light is not focused anywhere, the candela measurement will likely be small.

review of the Anker LC90 flashlight

Conversely, a handheld searchlight may have a high lumen measurement and a high candela measurement because the light is both very bright and very focused.

Flashlights with low candela measurements compared to their total light output tend to offer a flood pattern while high candela measurements for a similar output level suggest a more focused beam. Neither is “better,” but one may be better suited for your needs.


The Anker LC90 has a tailswitch that handles all of its different modes and activations. As the Anker has five different modes, this proved to be problematic in actual use.

Anker flashlight tailswitch

To activate the light, you can half-press the switch for a momentary activation. You can also fully depress the switch to get a constant-on activation.

The same switch is also responsible for rotating sequentially through the five different modes: high, medium, low, strobe and a Morse code SOS.

Anker designed the switch to advance the mode by one position with each momentary press made within two seconds of each other. This creates a problem if you are clearing an area and flashing the light on and off – the light literally begins to cycle through the different modes.

If Anker reduced the time between activations from 2 seconds to less than 0.5 seconds, it would likely avoid this problem entirely. The flashlights manufactured by Streamlight manages this very well in my experience.

Of course, the ideal solution would be a way to program the light to only activate at the high output level when using the momentary switch. This would prevent all problems. For a light marketed as a tactical light, this seems to be a no-brainer. But, Anker is not a company that appears to be familiar with the needs of law enforcement, military and armed citizens.

My dad once told me that a tool that tries to do everything will likely fail at all of them. His concept is that a tool should be designed to do one job very well. Even though this light is sold on Amazon as a “tactical” light, the inclusion of different modes and the clumsy way of accessing them causes the light to be unsuitable for tactical use.

Charging the 18650

Charging the 18650 battery is handled within the light. An included micro-USB charging cable plugs into the rear of the light to power it up. A red LED illuminates letting you know it is charging.

Charging the Anker LC90

The problem with the charging system is that you have to disassemble the rear of the flashlight to access the charging port. This means that you cannot keep the Anker flashlight on the charger and have it instantly ready for an emergency.

So, for the homeowner keeping a light next to his or her bed, or the cop working a long night shift, this is a significant drawback. It may not be a deal killer, but it is an issue you will have to workaround.

I could have better understood the location of the charging port if its placement allowed Anker to make the flashlight submersible. Since it is not, I can’t really fathom how its placement makes a lot of sense for the end user.


Testing the actual performance of a flashlight is important. In fact, it may be the most important aspect of a flashlight review. After all, if the Anker LC90 doesn’t measure up to what the company claims, is it a light you want to buy? Probably not.

As with my other flashlight reviews, I use a series of tests that are similar to the FL1 standard. Due to a number of reasons, my tests are not the same as the ones in the ANSI/PLATO protocols. However, the tests do allow readers to make reasonable comparisons between the lights I have previously reviewed. The information also allows you to draw your own conclusions about how well a manufacturer has represented its product.

Output Over Time

Measuring output over time is one of the primary tests I perform on any flashlight I am reviewing. After all, a light that puts out a lot of light, but only for 2 minutes is not likely something most of my readers will be interested in buying.

Anker lists this light as having a runtime of 6 hours. It also lists the total light output as 900 lumens. A casual observer might think that means the light will put out 900 lumens constantly for 6 hours. This would be a false assumption based on the way specifications are presented. This assumption is one that most flashlight manufacturers hope you make, and is not some special trick invented by Anker.

In general terms, FL1 Standards say that runtime is measured as the total time from the peak output when the light is first turned on with a fresh battery to the point where light output drops to 10% of the original output. This means that even if a company is testing to the FL1 standard, it is reporting an 89% reduction in light output as part of its runtime.

I test output of a light in a homemade integrating sphere. This sphere is the same one used for all of my flashlight testing. It will not measure absolute output in lumens. However, it will show how long it takes a light to drop from 100% output to 10%.

Below is a graphical representation of the light output from the Anker LC90 over time.

Anker LC90 Runtime

From 100% output to less than 9% output – the generally accepted measurement in the industry – the LC90 showed a runtime of 4 hours 17 minutes. This is significantly short of the 6 hours advertised by the company, but still fairly long.

However, I do not think that a run to 10% is a fair measurement for consumers. Instead, I believe the runtime measurement should represent the amount of time it takes for a flashlight to drop from 100% to 75%. However, I’ve suggested that the FL1 standard be modified to reflect the time it takes to drop from 100% to 50%.

If I hold the Anker LC90 to the 50% standard I’ve proposed, the flashlight would have a runtime of less than 2 minutes.

Let me repeat that – in my testing, the Anker LC90 took less than 2 minutes to drop its output to below 50% its initial, maximum output.

Don’t you think that is a more telling measurement than the accepted 10% standard?

In fairness, I repeated the runtime test a second time. The results were very similar to the first test’s and did not show an improvement for the 50% runtime standard I have proposed.

I followed up with Anker to see if the company employed any “feature” that would automatically drop the power output. Specifically, I asked “Does the flashlight reduce the brightness level when run on high? In other words, if I am running it on high, will it automatically drop the output level at some point automatically?”

Anker replied: “We would like to explain that along with the change of the power, the flashlight will decrease its brightness inconspicuously. But there is no a special point where the flashlight drops the output level.”

A drop to less than 50% of the initial output in less than 2 minutes is not acceptable performance for me.

Heat Generation

Some high-output flashlights get extremely hot when run for an extended period of time. Some of the flashlights I have tested exceeded 200° F, which is too hot to hold in a bare hand. This graph shows the surface temperature of the Anker LC90 flashlight over time when running at the high output level.

Anker LC90 Temp Over Time

As you can see, the LC90 remains relatively cool for the duration of its run. I suspect that this is partially because of how quickly light output drops.

Visual Comparison

There is some truth to the idea that a picture is worth a thousand words. While the data and tables above help to explain how the flashlight performs, the following photos actually show you.

Since the LC90 flashlight has an adjustable beam, I photographed the light at the widest beam and most zoomed in. The photo below shows the widest beam. Drag the slider in the middle of the photo left and right to reveal more or less of the photo. The dark section is a photo of the same scene without the flashlight on.

Night Test - ControlNight Test - Wide Initial

The photo below shows the most focused or tightest beam:

Night Test - ControlNight Test - Zoom Initial

To compare between the two, below are the two photos from above:

Night Test - Wide InitialNight Test - Zoom Initial

The light – both focused and with the wide beam – is extremely bright initially. Since I measured a sharp drop in light output when doing the runtime test, I photographed the light after just 10 minutes of running. This is a comparison of the initial brightness (wide beam) on the left and the brightness after 10 minutes on the right:

Night Test - Wide InitialNight Test - Wide 10 minutes

I also photographed the most focused beam after 10 minutes. The initial photo is on the left with the 10 minute runtime photograph on the right:

Night Test - Zoom InitialNight Test - Zoom 10 minutes

As you can see, there is a noticeable drop in light after just 10 minutes of running. This coincides with the measurements I recorded during the runtime testing. Hopefully, it will give you a better understanding of what that chart means in actual use.

(Note: All photos taken with a Canon 80D and a 50mm f1.8 lens. Settings: f8.0 at 2 seconds with manual focus.)

Drop Test

To test the impact resistance of a flashlight, I use a method similar to that employed in the FL1 standard. In my test, I drop the flashlight six times onto a concrete sidewalk from the height specified by the manufacturer’s rating. If you think of a flashlight as a cube, I drop the light once on each “side.”

In my test, the Anker LC90 continued to work after each of the six drops. The housing was obviously damaged from the falls, but none of the damage appeared to affect the light’s integrity.

Additional Photos

Here are some additional photos of the Anker flashlight and packaging. Click on any of them to bring up a larger view.

Final Thoughts

The information I discovered while testing the Anker LC90 is one of the reasons why I do reviews. You deserve to know the whole, unvarnished truth about products. Some do better than expected while others fail to live up the advertisements.

Anker LC90 specifications

Let me be perfectly clear: I do not recommend the LC90 for any kind of tactical, self-defense, law enforcement or military use.

It may be acceptable to some people for use as a general-purpose light to keep in the truck. However, I would still suggest looking at another light that offers better runtime and improved water resistance.

At the end of the day, you get what you pay for. While the performance of this light does not live up to my expectations, it does come with a 18650 battery and can fit some roles. Many Amazon reviewers seem to like it as well. If you want to learn more about the Anker LC90, you can click here to see it on Amazon.


There are a broad range of handheld tactical lights on the market, and many of them offer superior performance to the Anker LC90 flashlight. One of the best flashlights for the money is the SureFire G2X (see my review here). This is my go-to EDC and tactical flashlight.

Another good light to look at is the Streamlight ProTac HL. The ProTac HL I have now is the second one I purchased. The first I carried for a year before my dad expressed an interest in it and I gave it to him. This one I’ve carried for several years, and it just keeps ticking.

If you are looking for a rechargeable tactical flashlight, the Streamlight Strion LED HL. It is more expensive, but it is a solid torch that is truly useable in tactical situations. I’ve used several as a police officer – both on a duty belt and mounted to an AR rifle. They offer a lot of performance for the money.

Others, like the Elzetta Bravo, also offer good performance.  I recommend checking out my flashlight review page for additional reviews. I’m in the process of adding several new reviews, so check back often.

Last update: August 22, 2021


Every review you read should disclose any potential biases that might reasonably influence the results. While most writers do not, I do.

I purchased this flashlight with my own money. It is not a demo unit or T&E (an industry term for test and evaluation) sample. I purchased it from Anker through its Amazon store.

Anker did not request I review this light, nor was any form of compensation offered to review it by anyone. Although I have purchased a few products from Anker in the past, I have not had any conversations with any representative of that company about any topic.

Anker is not a sponsor, nor am I in any talks with them to be one. I have no financial interests in any flashlight manufacturer. is a for-profit website. I do not charge readers a dime to access the information I provide.

Some of the links on this page and site are affiliate links to companies like Amazon and Palmetto State Armory. These links take you to the products mentioned in the article. Should you decide to purchase something from one of those companies, I make a small commission.

The links do not change your purchase price. I do not get to see what any individual purchases.

If you have any questions, please leave a comment in the section below and I will do my best to answer them.

41 replies on “Anker LC90 Flashlight Review – Don’t Believe the Hype”

I have had two of these for over a year and it’s impossible to find faults for a 30 buck flashlight. Both of my sons have a couple and my 3 daughters each have one.
Zero problems!
I’ve even used one many times under water for several minutes at each use with no water getting inside.

I just found this site and love what I see.
Sir, if you had to recommend a “zoomie” at around the $100 price level, what would you recommend? I have tried several $80-ish lights from the major players, but for uses of short duration, they did not seem to outperform this Shankar.
Thank you!

Thank you!

I think what’s missing in your review is that the Anker is $22, and the ones you recommend are $70+.

You’re doing the same thing all enthusiasts do, and saying that the less expensive version sucks, because it’s not as whiz-bang as your preferred one, even if it costs three times the price, just because they use the word “Tactical” in the description. Well no kidding. I would expect a light costing three times as much to do all those things a lot better.

For $22, the Anker light is **FANTASTIC**. I’d challenge you to find one for that little that is half as good.

Hi Mark,

I judged the light based on the company’s own description. If they want to go head-to-head with legitimate tactical lights, they need to build them to that level. For a knock-around light, it is good. As a tactical light, it is not. I have no investment in any flashlight company and try to provide the best information possible for readers.

In light of the credible allegations that the company is using some of its products to store and collect photo and video data without permission and then using facial recognition technology to…what? Build a database?…I cannot recommend any Anker products anymore.

For additional information:


We have several of these Anker flashlights. They are seriously abused as we do commercial, industrial HVACR service in old buildings in Detroit. They are the best economical flashlights we have ever used. Been dropped, been dropped in water, been driven over. We love them.

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