Police Magazine 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.

3 min to read


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

Police officer in a darkened hallway holding a flashlight and headline 5 Things to Know When Buying Patrol Lights, and POLICE logo.
PatrolApril 16, 2026

5 Things to Know When Buying Patrol Lights

Whether it’s time to buy a personal patrol light or make the decision for the next department-issued patrol light, what do you need to know? How do you weigh the different variables and make the best choice?

Read More →
Group of men and women seated in a circle around a room as one woman stands and leads discussion.
PatrolApril 9, 2026

Warriors Heart’s Mission to Serve America’s Veterans and First Responders

Warriors Heart works closely with federal and community partners to expand treatment options for veterans and first responders. By combining specialized clinical care with a peer-driven recovery environment, the program helps warriors rebuild strength, restore relationships, and rediscover purpose.

Read More →
Black background with police card lights and logo for POLICE, with headline in yellow: How are LE Boots Different for Women
Patrolby Wayne ParhamApril 9, 2026

How are LE Boots Different for Women?

Boots fit differently for men and women, so how are law enforcement boots for women designed differently from those worn by men? In this video, Kyle Ferdyn, of Garmont Tactical, shares all the details.

Read More →
Ad Loading...
Man standing in desert talking on radio.
PatrolApril 9, 2026

Motorola Solutions Extends Resilient, Mission-Critical Communications and AI with T-Satellite from T-Mobile

A collaboration between Motorola Solutions and T-Mobile helps deliver uninterrupted situational awareness and access to AI wherever the mission leads, enabled by satellite connectivity for Motorola Solutions' APX NEXT smart radios.

Read More →
Las Vegas skyline at dusk with headline 2026 Vision FirstNet Users Summit, dates for the event, and diagonally at bottom right words Registration Open.
PatrolApril 9, 2026

Registration Now Open for 2026 Vision FirstNet Users Summit

Registration is now open for the 2026 Vision FirstNet Users Summit. The Summit is an opportunity to connect with local and federal leaders, specifically the FirstNet Authority, which is hosting a track at the event this year.

Read More →
Two chest rig packs in camo in front of a blue themed SWAT background and a logo for Tasmanian Tiger.
PatrolApril 6, 2026

Tasmanian Tiger Launches Modular Chest Rig 4xM4 & Modular Chest Rig Pack for LE

Tasmanian Tiger has expanded its Modular Load-Carrying System with the new Modular Chest Rig 4xM4 and Modular Chest Rig Pack. Both provide adaptable, low-profile load options for military, law enforcement, and SWAT missions.

Read More →
Ad Loading...
Security worker watching computer monitors, with a white area at top with a logo for ZeroEyes.
PatrolApril 2, 2026

ZeroEyes Expands from AI Gun Detection to Knife Detection & Suspect Tracking

ZeroEyes has launched three new product categories to extend beyond firearms to address additional acute safety threats and basic security needs. Knife detection and suspect tracking are now also available.

Read More →
GALLS logo against a white box set atop a blue-tinted map of Tennessee.
PatrolApril 2, 2026

GALLS Acquires CMS Uniforms

GALLS has acquired CMS Uniforms and Equipment, Inc., a prominent regional provider based in Nashville, Tennessee. CMS Uniforms, founded in 2000, has built a reputation for delivering stellar customer service and managing complex uniform programs for more than 670 accounts.

Read More →
Police drone hovering over its charging nest against a blue sky background.
PatrolMarch 26, 2026

Brinc Unveils Guardian, Launching the Next Era of Drone as First Responder

Brinc’s new Guardian delivers 24/7 operations, Starlink connectivity, and a robotic charging nest that can swap batteries and change payload configurations without human intervention.

Read More →
Ad Loading...
image of trooper, shown from waist down, standing beside a police cruiser along the road and at right a headline Slow Down Move Over.
PatrolMarch 19, 2026

Colorado State Patrol Releases 2025 Struck-By Analysis

The Colorado State Patrol, after analyzing its 2025 struck-by incidents, identified one area for improvement: using traffic cones to provide advanced warning before the cruiser's location. Here is the agency’s final data.

Read More →