POLICE Logo
MenuMENU
SearchSEARCH

Emissive Energy Inova T4 Flashlight

Inova’s first rechargeable patrol light is tough and powerful.

March 1, 2006
Emissive Energy Inova T4 Flashlight

Durable and rechargeable, the Inova T4 gives constant light output for two hours.

Many years ago I came across these nifty little LED lights made by Inova that clip to your coat zipper, or your bag, or your keychain. They were pretty cool, for what they were, small lights to help you locate your car’s key slot, or find that loose change you dropped, or illuminate an escape route in case of an emergency. I love those little lights and I still think of them when somebody starts talking about Inova.

But Inova, like everything else, has changed in the last few years. The Inova Light division of Emissive Energy now manufactures very impressive LED duty lights.

Inova duty lights are now available in models that offer 1-watt to 4-watt LEDs. These lights have more than enough power for duty use and are durable enough to survive many years of hard work.

Inova recently introduced two new models in its tactical flashlight line, the T4 and T5. These two lights are virtually identical 4-watt LED models. The only difference between the two is that the T4 is rechargeable while the T5 is not. Because the T4 is rechargeable, I decided to focus on it for this review.

The T4 comes with two charging units: one for AC and the other for DC. For cops on patrol, DC recharging is a nice option. You can charge the light in your duty vehicle, so you don’t have to worry about your light dying mid-shift.

Another great feature of the T4 system is that the chargers have blinking lights in blue and green to signify that the T4 is charged. This is better than the standard red and green charge lights because they can be seen by color blind users.

Inova uses a lithium ion battery as the power source for the T4. Lithium ion batteries charge faster than nickel cadmium batteries. Also, the light doesn’t have to be fully discharged before recharging, so your light will always be at full power if you keep it in the charger when it’s not in use.

Unlike many rechargeable lights the T4 gives constant light output for its entire run time, which is about two hours. Inova uses a regulatory circuit to achieve this constant light output. The result is that from a full charge to depletion you get the T4’s 100-lumen output. That translates to a useful beam of 300 feet, which was enough for me to make out facial details at about 40 yards.

The T4 uses a mid-body on/off switch. This switch provides constant on/off or can be used as a momentary on. It is easily operated with or without gloves, and it can be easily manipulated when using a handgun with either Harris’ or Ayoob’s light techniques.

And the T4 is tough. I accidentally knocked my evaluation T4 off of a file cabinet to the concrete floor of my basement. The light fell about three feet and was still shining brightly. So I decided to experiment. I set it on top of a clothing armoire that is approximately six feet high and I knocked it off six times. The T4 came through like a champ; no cracks in the lamp, no chips to the light’s body, and it just kept shining brightly.

The T4 gets its toughness from the LED light assembly and the aircraft grade aluminum body with military grade Type III anodizing. This keeps the unit’s weight down, while giving it enhanced durability.

Inova’s duty lights are innovative, well designed, powerful, and tough. The T4 is no exception.

Emissive Energy Inova T4 Duty Light
Length:    8 inches
Diameter:    1.1 inches
Lamp Type:    Trios LED
Lamp Output:    100 lumens
Body Material:    Aircraft grade anodized aluminum alloy
Battery:    Rechargeable lithium ion
Price:    $129.99
Website: www.inovalight.com  

Ad Loading...

Scott Smith is a disabled veteran who served as an active duty Army MP and in the U.S. Air Force Reserve and Air National Guard as a security policeman.

Subscribe to our newsletter

More Patrol

Screenshot of compute screen showing a blurred license plate compared to an image where the image has been enhanced to show the numbers and letters.
Patrolby Edited by StaffNovember 25, 2025

Amped Highlights Power Behind Amped FIVE Software

Amped FIVE empowers you to advance your investigations with confidence and precision, from the crime scene all the way to the courtroom.

Read More →
Background orange tinted image of southern California with pushpin marking Burbank. Headline reads K-9 Killed by Gunman, Burbank Police Department
PatrolNovember 24, 2025

Police K-9 Killed, Suspect Dies in Shootout with Cops

A Burbank Police Department K-9 was fatally shot over the weekend by a passenger who fled on foot from a traffic stop. The armed suspect was killed in a shootout with officers.

Read More →
Thumbnail image with blue and red police lights against a black background, large POLICE logo, headline for From the Show Floor: InVeris
Patrolby Wayne ParhamNovember 23, 2025

From the Show Floor: InVeris

In this video, learn about how InVeris provides training to law enforcement, including customized augmented reality scenarios. The augmented reality system can scan up to 10,000 square feet of real-life environments and create a curriculum based on those spaces.

Read More →
Ad Loading...
Thumbnail image for video series POLICE From the Show Floor featuring Polaris Government & Defense.
Patrolby Wayne ParhamNovember 19, 2025

From the Show Floor: Polaris Government & Defense

Learn about Polaris Government & Defense in this video as POLICE visits their show booth to discover their side-by-sides and the advantages they provide for agencies.

Read More →
black background width image of police lights in middle and headline Dashcam Video Officers rescue Man from Burning Car
PatrolNovember 17, 2025

Dashcam Video Shows Officers Rescue Man from Burning Car

Dashcam video released by a New Jersey police department shows two of its officers rescuing an unconscious man from a burning car after a crash.

Read More →
blue background with image of a red dot sight and also second image of the red dot on a handgun lower right
PatrolNovember 17, 2025

Aimpoint COA optic + A-CUT Named Red Dot of the Year

The Aimpoint COA optic + A-CUT system has been named Red Dot of the Year by Guns & Ammo magazine. The new optic system was introduced in January 2025.

Read More →
Ad Loading...
Thumbnail for video series POLICE From the Show Floor, with headline text featuring Axon
Patrolby Wayne ParhamNovember 16, 2025

From the Show Floor: Axon

Join POLICE as we visit with Abi Stock, of Axon, to learn about the company’s latest technology offerings, such as Axon Assistant, Form One, and the DFR integration with Skydio.

Read More →
side view of a ballistic helmet in studio setting, black background, with sparks and smoke
PatrolNovember 16, 2025

Back Face Deformation, Brain Injury and Ballistic Helmets – Why the “Dent Doesn’t Matter” Claim Ignores Science

Alex Poythress, co-founder and CEO of Ballistic Armor Co., explains why ballistic helmet buyers should insist on full test data, including BFD measurements, standoff distance, and padding configuration, rather than rely solely on penetration ratings.

Read More →
Pink Streamlight Wedge XT flashlight.
PatrolNovember 13, 2025

Streamlight Marks 15 Years of Support for Breast Cancer Research Foundation With $20k Donation

In its 15th year of supporting the Breast Cancer Research Foundation, Streamlight donated $20,000 to help in the fight against cancer. Donations were generated through the sale of special Wedge XT models and other pink flashlights.

Read More →
Ad Loading...
center circle image of PTSD Help Expanded surrounded by military and first responder images
PatrolNovember 11, 2025

Police-Led Mental Health Charity Expands to Include Veterans

Talk To Me Post Tour (TTMPT), a non-profit organization that has been providing peer-support programs and professional psychological support for first responders, is now expanding services to military veterans.

Read More →