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Powertac E3 (Gen IV) Keychain Light - Cree XP-G2 R5 LED - 168 Lumens - Black - Uses 1 x AAA

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Powertac E3 Keychain LED Light - Gen IV

A Mighty LED in a Tiny Body

Searching for a light that's small enough to hang on your keychain, but won't weigh it down? Powertac's E3, now in its 4th generation, is ready to be your pocket light. At just over 3" long, the E3 Gen IV is about the length of your finger. It's one of the smallest lights to feature CREE's premium XP-G2 R5 LED, a powerhouse LED that's often featured in lights twice this size and three times the price! This mighty LED allows it to fire 168 lumens on the power of a single AAA battery.

Ingenious Defense

A flashlight may not spring to mind as a self-defense tool, but the E3 has features that can keep you safe in a pinch. Access the strobe mode to disorient attackers. The bright flashing will temporarily blind eyes that have adjusted to the dark. And if that's not enough to deter them, the strike bezel (A.K.A. the front surface) adds force to a strike. The wavy pattern ("crenellations") concentrate the impact into a smaller surface area. That'll make them think twice.

Tiny, Tough, and Tricky

Keychains get dropped, tossed, and taken out in the rain, so Powertac knew they had to make the E3 Gen IV rugged. Believe it or not, the E3 actually has the highest possible waterproof rating of IPX-8. It can be fully submerged in up to 2 m of water. And the body is constructed out of aerospace grade aluminum that's then anodized with the thickest possible plating. Even if your E3 takes a swandive into a puddle, you're good to go.


  • Aircraft-grade aluminum body
  • Anti-scratch type III hard anodized
  • Waterproof in accordance with IPX-8 (two meters submersible)
  • Digital circuit-control technology monitors light output for consistent operation
  • Reverse-polarity protection against accidentally reversed batteries
  • Stainless steel pocket clip for easy carry
  • Crenelated strike bezel for self-defense
  • Manufacturer's No Hassle Lifetime Warranty

Included Accessories:

  • Key ring
  • Spare O-ring


  • Outputs: 1x AAA battery:
    • High: 168 lumens
    • Low: 50 lumens
    • Strobe: 168 lumens
  • Cell: 1x AAA battery
  • Dimension: 79mm (Length) x 14.5 mm (Diameter)
  • Weight: 22 grams (excluding batteries)
  • UPC: 815698013092
  • MPN: E3-G4
Compatible Batteries:1 x AAA
Batteries Included:No
Included Accessories:Key Ring, Spare O-ring(s)
Flashlight Usage:Every Day Carry, Tactical
Switch Location:Tailcap
Product Certifications:IPX-8
Warranty:Battery Junction 30-Day Warranty, Powertac Lifetime Warranty
Return Policy:Battery Junction Return Policy
Primary Material:Anodized Aluminum
Product Weight:0.77oz
Product Dimensions:3.11" (L) x 0.57" (Head Diameter)0.57" (Body Diameter)
Country of Origin:China
4 Reviews
75% (3)
0% (0)
25% (1)
0% (0)
0% (0)
By michael
Great EDC Light!
June 24, 2022
Very nice EDC light. Runs off a single aaa battery so its small but still packs a punch.
By vince t.
Could have been a winner...
May 15, 2017
Light is well made and output was bright. Only 3 stars due to the UI (user interface). Suppose to cycle from High>Med>Strobe when powered on. Well that depended on what level you left it off at. If I shut off in High, the next time it would come on in Med. If shut off in Med., then it would come on in Strobe. There is no mention of any memory in the literature that accompanies it and even so, its operation is not in the normal sense when memory is used. On top of this, if left off for more than say 3 minutes, the light would then function as expected, coming on in High regardless of what level I turned it off on. I purchased both AA and AAA version and returned both due to this reason. Other than the UI issues, I think its a nice light.
By Hugh I.
North Carolina
Always ready pocket handy light
March 8, 2017
Not much bigger than its AAA battery. The two levels of light have been sufficient for any application. It's a backup to a CR123 tactical light , providing enough light with a broad coverage for a worklight or walking the dogs. I'm completely happy with this light. Very bright for it's size and I find the pocket clip and the tail switch to be handy for one hand use.
  • Easy one hand use, bright enough for the darkest night, nicely knurled for a non slip grip.
  • None that I can see.
By Pete
Clearwater, Florida
Nice little EDC light
December 14, 2016
Nice and compact with clicky switch, I've been carrying the Streamlight ProTac 1AAA for years and have finally found a light worth replacing. Compared brightness with a 2AAA penlight rated with 168 lumens also and equally bright.
  • Compact edc light
  • 168 lumens off 1 AAA
  • Nice finish
  • Pocket clip's not reversible (Doesn't bother me, but may for some)
  • Don't like the keychain hole, would've been easier to access the button without it.
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Powertac E3 (Gen IV) Keychain Light - Cree XP-G2 R5 LED - 168 Lumens - Black - Uses 1 x AAA

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