Streamlight ProTac HL 4 Review

ProTac_HL_4_01It wasn’t that long ago when 500 lumens was considered a lot of output for LED flashlights, and now ultra-high output lights are capable of producing well over 1,000 lumens. The Streamlight ProTac HL 4 has a maximum output of 2,200 lumens and supports Streamlight’s TEN-TAP Programming, which allows the user to choose between three function sets. The ProTac HL 4 is also dual-fuel capable, operating on either four lithium primary 123A or two 18650 rechargeable lithium-ion batteries. With a competitive price point, as well as flexibility and economical operation, the Streamlight ProTac HL 4 is shaping up to be a great choice for users needing more output.

Key Specifications

  • Output: 2,200 lumens high, 600 lumens medium, 60 lumens low
  • Intensity: 30,000 candela
  • Runtime (Lithium-Ion): 1h 45min high, 4h 15min medium, 43h low
  • Runtime (123A): 1h 30min high, 4h medium, 40h low
  • Battery: 2 x 18650 Lithium-Ion or 4 x 123A
  • Length: 8.6″
  • Diameter: 2.4″ bezel, 1.2″ body
  • Weight with Batteries (Lithium-Ion): 1 lb. 2 oz.
  • Weight with Batteries (123A): 1 lb. 1 oz.
  • Colors: Black
  • Warranty: Limited Lifetime
  • MSRP: $175
  • Actual Pricing: ~$100

Pricing & Contents

MSRP for the ProTac HL 4 is $175, and the light is only available in black. Included in the blister packaging (item # 88060) are: Streamlight ProTac HL 4, 4 x 123A lithium batteries, wrist lanyard, and user manual.

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The dual-fuel capable ProTac HL 4 uses either 4 x 123A lithium primaries or 2 x 18650 lithium-ion rechargeable batteries.


Streamlight’s OEM 18650 lithium-ion rechargeable kit is available in either USB (item # 22010) or 120V (item # 22011). We tested the USB kit, which comes with the charging cradle, 2 x 18650 lithium-ion batteries, USB cable, and user manual.

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The micro USB port on the charger is shrouded to work with Streamlight’s locking micro USB cables and prevent accidental disconnection. In addition to the micro USB input, the battery charger can also be used with 12V Streamlight DC power cords such as those for the Stinger or Strion. Charge time is 3.5 hours for one battery or 6.5 hours for two batteries and may be longer when using a current-limited USB source. When two batteries are inserted, the left bank will be charged first. The 2,600mAh lithium-ion batteries are rated for up to 500 cycles.

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Lithium batteries have higher energy density than regular batteries, so low-quality or counterfeit batteries can be dangerous to use. Streamlight recommends using only quality lithium batteries from Duracell, Energizer, Panasonic, or Streamlight. Additionally, lithium primary 123A’s should never be used with lithium-ion 18650s in any combination.

The Light

The ProTac HL 4 is has a length of 8.6”, putting it in the mid-sized category along with familiar rechargeable lights such as the Stinger DS LED. The aluminum body is type-II anodized and has a waterproof IPX7 rating.

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The head features a crenelated bezel with an anti-reflective coated glass window and a TIR optic. Three flat areas on the heatsink help stop the light from rolling away on a smooth surface.

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A rubber sleeve on the body of the ProTac HL 4 acts as a thermal insulator (due to the high output of the light, the entire light gets warm fairly quickly when operating in high mode) and also provides grip.


Tail Cap
Textured black rubber covers the forward click switch, which is shrouded to prevent accidental activation and also allows the light to tail stand. The tailcap can also be unscrewed a quarter turn to disable the light, which is recommend when transporting the light due to the amount of heat that can be produced if it is accidentally turned on.

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Function Sets

Streamlight’s TEN-TAP Programming allows you to choose between three different function sets, making the ProTac HL 4 suitable for both practical and tactical use. To change the function set, simply tap the switch nine times, each time within 0.4 seconds, and hold the switch on the tenth time until the light turns off.

High/Strobe/Low (Default)
Press once for high, press twice for strobe, and press three times for low.

High Only
Keeping things simple, this single-output function set is ideal for tactical use.

Press once for low, press twice for medium, or press three times for high.


Up to three modes are available, depending on which function set is activated.

Maximum output of 2,200 lumens.

With two clicks in the High/Strobe/Low function set, the 100% strobe mode is activated.

With two clicks in the Low/Medium/High function set, medium output of 600 lumens is activated.

Reduced power output of 60 lumens. In the High/Strobe/Low function set, the light will briefly strobe before low can be activated.


Using a Cree XHP50 multi-die LED, the ProTac HL 4 achieves a much higher output compared to single-die LEDs such as the XM-L2. The larger area of the multi-die LED results in a considerably wider hotspot, which easily lights up large areas but won’t have the range for distant objects. Even though the XHP50 LED has gaps between the individual dies, the TIR optic in the ProTac HL 4 produces a clean beam pattern that is far superior to a similarly sized reflector and has no visible shadows, dark spots, or edges.

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If you haven’t read our article about runtime graphs and the ANSI FL1 Standard, please click here.




Streamlight uses step-down regulation for high output mode to maintain a reasonable temperature and prevent overheating, but medium and low output modes are well regulated. Although ANSI FL-1 Standard runtime is similar for both 123A lithium and 18650 rechargeable lithium-ion, the behavior during the last 20% of the runtime can be easily seen. Using 123A lithium batteries has a slight tactical advantage, even with the reduced runtime though, as the output slowly decreases and gives the user a chance to switch to a lower output mode or replace the batteries.


2,200 lumens is a lot of light. Running the ProTac HL 4 on maximum output does produce a lot of heat, but the rubber grip insulates the body well and makes sure that it doesn’t get uncomfortable to hold. In addition to being able to put out an incredible amount of light, the ProTac HL 4 is also among an increasing number of dual-fuel lights that accept both lithium primary and rechargeable batteries. Using 18650 lithium-ion rechargeable batteries helps keep costs down, as the light goes through batteries rather quickly, while having a set of spare lithium 123A batteries minimizes downtime. Switching between different types of batteries is easy because instead of using a battery carrier, the ProTac HL 4 uses tabs on the body of the light keep the narrower 123A batteries from rattling. The Streamlight ProTac HL 4 not only offers a noticeable performance increase compared to many of today’s high-output lights in the 500 to 1,000 lumens range, but comes at an affordable price point and has the choice of programmable function sets to meet a wide variety of needs.


  • Maximum output of 2,200 lumens
  • High, medium, low, and strobe modes
  • User-programmable function sets
  • Dual Fuel capable (2 x 18650 or 4 x 123A)
  • Smooth beam pattern
  • Lifetime warranty
  • Removing batteries requires shaking them out
  • Cannot use medium as first output level, only low or high

Related Links

Streamlight ProTac HL 4 Product Page

Streamlight ProTac HL 4 Fact Sheet

Streamlight ProTac HL 4 Info Sheet

Streamlight ProTac HL 4 Data Sheet

Streamlight 18650 Charger Kit Product Page

Streamlight 18650 Charger Kit Fact Sheet

Streamlight 18650 Charger Kit Info Sheet

Streamlight 18650 Charger Kit Data Sheet

8 Responses

  1. Rus says:

    Great write up! I got mine around May and have put it through a couple of shifts. I really like this light, the ONLY change that I would want to see – attach this bulb/head to a Stinger body/battery! I would love to see that… I think that the Stinger is the best rechargeable battery on the market. Other than the change, I think that this is a great all around “tactical” flashlight. I can’t wait to see 4-5k lumen from a flashlight this size…

  2. Robin Wang says:


    One problem with that is that you would less than half the runtime! The Stinger uses NiCd/NiMH battery packs, which doesn’t have as much capacity as lithium-ion.


  3. Rus says:

    No kidding, that’s too bad… Only reason, I have several Stinger fast & piggyback chargers! I was hoping to be cheap and not invest too much in new batteries and chargers.

  4. Julius C says:

    Where can I purchase this flashlight? And how much?

  5. Robin Wang says:


    Actual pricing is about $100 at the time of writing. We don’t want to promote any specific retailer, but there are multiple that have the light at or below that price point.


  6. Taylor Sealy says:

    I love the high brightness but don’t always want that and for my application (home inspection) I would have liked and easier way to change the levels and have them stay as the default. If there was a second button that controlled default brightness, such as my Fenix had, it would let me shine the light briefly to look for cracks or whatever and then turn it off. Going through a sequenced of low, medium, high every time I turn it on gets old and so I just leave it on high. Also, it would be nice if there was a compatible holster for it. I had to make my own by cannibalizing another holster and using epoxy putty to attach the belt clip to some pvc pipe pieces as the holster.

  7. George says:

    Hi Robin, may I know if there are any upcoming flashlight review? Thanks

  8. j. herbert fawcett says:

    my hl4 does not work.

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