A black Police Security 4000 Twin Power flashlight with a textured grip, featuring two control buttons on the side and the brand name printed on the barrel, shown on a white background.
The TWIN POWER 4000 LUMEN LED FLASHLIGHT standing vertically
a thumbnail showing a man holding the Police Security Flashlights flashlight
A hand holding the Twin Power 4000 flashlight
Police Security Twin Power 4000 flashlight lying on a log in the woods
A hand holding a Police Security Twin Power flashlight that is turned on, emitting a bright beam of light, set against a blurred green outdoor background.
A black Police Security Twin Power flashlight with a textured grip and silver accents, resting on a light wooden tabletop with a blurred workshop background.
Twin Power Flashlight in black with product specifications and feature callouts on a dark graphic background.

Twin Power 4000 Lumen Dual-Battery Flashlight

Sale price$29.99 Regular price$69.99
Save $40.00

4000 lumens ● Rechargeable 21700 + AA Batteries

Swap rechargeable to alkaline at the touch of a button ● 338m beam distance ● 9h max runtime ● USB-C Rechargeable ● Focusable ● Battery-level indicator ● IPX4 Water Resistant
See full specs & features ↓

Lifetime Warranty | Free Shipping over $39

Instantly switch between rechargeable and AA battery power in one flashlight.

The power of rechargeables with the convenience of AAs

Police Security’s Twin Power® flashlight is a groundbreaking, patented, ultra-bright 4000 lumen flashlight that redefines traditional Dual Power flashlights. Unlike Dual Power, which requires two separate battery cartridges, the Twin Power flashlight operates seamlessly with a SINGLE cartridge. The cartridge holds a built-in 21700 rechargeable battery for primary power, and 3AA alkaline batteries for backup. With this innovative design, you'll never face the dilemma of drained power. Simply toggle between alkaline and rechargeable battery sources with the touch of a button, ensuring uninterrupted illumination whenever you need it. Equipped with battery level indicators, this flashlight guarantees you'll never be left in the dark.

Features

Patented Twin Power® Technology Means Uninterrupted Performance

  • Switch between the rechargeable 21700 li-ion battery or 3AA alkaline power sources from a single battery cartridge

Ultra-Bright, Long-Range Illumination

  • 4000 lumen maximum output
  • 1109-foot (338m) beam distance with wide-area visibility
  • Twist focus beam; quickly change from spot to flood light for versatile lighting needs

Built for Durability & Convenience

  • Battery-level indicator
  • Ergonomic rubber grip
  • Easy-press tactile switches
  • Impact-resistant and IPX4 weather resistant

Extended Runtime for Reliable Performance

  • 9-hour runtime
  • Switch to backup power with the click of a button
  • Perfect for Law Enforcement, Outdoor Use, Tradesmen, and Emergency Situations

Lifetime Warranty

If your light isn't working the way it should, we want to know.

We stand behind our products which is why every Police Security flashlight is covered by a limited lifetime manufacturer's warranty. If a defect affects how your light performs, we'll take care of the replacement FOR LIFE.

Warranty coverage doesn't extend to normal wear and tear, misuse, neglect, or battery corrosion, but if the light let you down through no fault of your own, we want to make it right.

FAQs

The Twin Power 4000 combines a rechargeable 21700 lithium-ion battery with 3AA alkaline backup in a single cartridge, so you're never caught without light. Here's what to know before you buy.

If you don't see what you need, please contact us for further assistance!

How bright is the Twin Power 4000, and does brightness change between battery types?

Yes. On the rechargeable battery, the light outputs up to 4000 lumens (high) or 1350 lumens (low). On the AA alkaline backup, output is 845 lumens (high) or 300 lumens (low). Switching sources with the toggle button also switches the available brightness range.

Customer Reviews

Overall rating: 4.3 / 5 from 4 reviews.

Customer video review of TWIN POWER 4000 LUMEN LED FLASHLIGHT

Great flashlight with a lot of lumens.Twist to narrow beam. Can use both double a batteries or the rechargeable battery inside the flashlight. Also tells you in the batteries are low. Great flashlight.Great value

Luis R. 5/5

TWIN POWER 4000 LUMEN LED FLASHLIGHT

Store owner replied: Thanks for the great video, Luis! Let us know if you need any assistance in the future!

Good buy

Thomas H. 5/5 Verified

Twin Power 4000 Lumen Dual-Battery Flashlight

Store owner replied: Thanks for the great review! The Twin Power flashlight is an excellent light to have on hand.

Not what I expected. While I like the dual fuel I don't like the inability to narrow the beam. Great flood light but I gave it to a family member because it won't work for me.

Russ W. 2/5 Verified

TWIN POWER 4000 LUMEN LED FLASHLIGHT

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WARNING: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov