Acebeam Defender P17 Black – 4,900 Lumen Dual-Switch Tactical Flashlight
The Acebeam Defender P17 Black is a duty-oriented tactical light built around a single CREE XHP70.3 HI 6500K emitter that produces a maximum of 4,900 lumens and throws 445 meters (486 yards). Its tail-dual-switch layout separates instant tactical activation from mode cycling, so you can go straight to Turbo or strobe with one press without hunting through a mode sequence.
Acebeam includes a 21700 5000mAh USB-C rechargeable Li-ion cell with the Defender P17 Black — the port is built into the battery itself, so there is no proprietary charging dock to lose. On Ultra-Low the Acebeam Defender P17 Black will run for roughly 20 days on that single cell.
The front bezel carries three silicon nitride ceramic beads for breaking glass in an emergency, and the body is AL6061-T6 aluminum with a premium HAIII hard-anodized anti-abrasive finish, a toughened anti-reflective glass lens, 1.5 m impact resistance, and IP68 sealing rated for 2 m submersion for 30 minutes. At 147mm / 5.79" long and 227g / 8oz with the battery installed, the Acebeam Defender P17 Black stays manageable for belt or duty-bag carry.
Acebeam Defender P17 Black Specifications
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LED: 1 x CREE XHP70.3 HI, 6500K, 50,000-hour lifespan
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Max output: 4,900 lumens (Turbo)
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Max beam distance: 445 m / 486 yd / 1,459 ft
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Peak beam intensity: 49,506 cd
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Max runtime: 20 days (Ultra-Low, 3 lumens)
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Battery: 1 x Acebeam 21700 5000mAh Li-ion with built-in USB-C port (included)
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Switches: Dual tail switch — tactical ON/OFF plus functional mode cycle, instant strobe
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Modes: Daily Mode (6 levels + SOS), Tactical Mode (5 levels + strobe), Special Mode (3 levels)
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Bezel: Stainless steel strike bezel with 3 silicon nitride ceramic beads
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Lens: Toughened ultra-clear glass with anti-reflective coating
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Dimensions: 147mm / 5.79" L x 41mm / 1.61" head x 26mm / 1.02" body
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Weight: 154g / 5.43oz without battery, 227g / 8oz with battery
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Body: AL6061-T6 aluminum, HAIII hard-anodized, black
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Impact / water resistance: 1.5 m impact rated, IP68 (2 m submersion for 30 minutes)
Acebeam Defender P17 Black Daily Mode Outputs
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Ultra-Low: 3 lm · 20 days
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Low: 90 lm · 91 m · 2,070 cd · 1.5 days
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Medium: 580–90 lm · 172 m · 7,396 cd · 5 h 30 min + 20 min
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High: 2,200–1,250–90 lm · 312 m · 24,336 cd · 6 min + 1 h 50 min + 1 h
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Turbo: 4,900–1,250–90 lm · 445 m · 49,506 cd · 40 sec + 1 h 55 min + 1 h
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SOS: 2,000 lm · 2 h 30 min
Frequently Asked Questions
What battery does the Acebeam Defender P17 Black use?
The Acebeam Defender P17 Black runs on a single 21700 lithium-ion cell, and Acebeam includes a 5000mAh 21700 battery with a USB-C charging port built into the cell itself. That means you charge the Acebeam Defender P17 Black with an ordinary USB-C cable and no separate charger or magnetic dock.
How bright is the Acebeam Defender P17 Black and how far does it throw?
The Acebeam Defender P17 Black reaches a maximum of 4,900 lumens on Turbo with a peak beam intensity of 49,506 cd, which works out to a 445-meter (486-yard) throw from its CREE XHP70.3 HI emitter.
How do the dual tail switches on the Acebeam Defender P17 Black work?
The Acebeam Defender P17 Black uses a tail-dual-switch design: one switch is the tactical ON/OFF and momentary control that jumps straight to full output or strobe, and the second switch cycles through the output levels. This keeps instant activation available one-handed without scrolling through modes first, which is why the P17 is set up for law enforcement, security, and defensive use.
Is the Acebeam Defender P17 Black waterproof?
Yes. The Acebeam Defender P17 Black is IP68 rated for 2 meters of submersion for up to 30 minutes and is rated for 1.5-meter impacts, with an AL6061-T6 aluminum body in a premium HAIII hard-anodized finish.
Can the Acebeam Defender P17 Black break glass?
The Acebeam Defender P17 Black has a stainless steel strike bezel with three silicon nitride ceramic beads embedded in the front. Those beads are designed to shatter tempered glass in an emergency, such as a vehicle escape or rescue situation.
What is the difference between Daily, Tactical, and Special mode on the Acebeam Defender P17 Black?
The Acebeam Defender P17 Black offers three user-selectable mode groups. Daily Mode gives you six output levels plus SOS for general use. Tactical Mode drops Ultra-Low and puts five levels plus an instant strobe on tap. Special Mode narrows it to three levels — Ultra-Low, Low, and a 2,000-lumen High rated at 300 meters — for longer runtime and simpler operation.
Is the Acebeam Defender P17 Black good for hunting or search and rescue?
The Acebeam Defender P17 Black was built for that kind of work. The 4,900-lumen output and 445-meter throw cover long distances, the dual tail switches allow instant one-handed activation, and the IP68 sealing plus impact rating handle rough weather. Acebeam positions it for hunting, search and rescue, law enforcement, and general outdoor use.
Where can I buy the Acebeam Defender P17 Black?
You can buy the Acebeam Defender P17 Black right here at Going Gear. We are an authorized Acebeam dealer, so every Defender P17 we ship is a genuine Acebeam product with full factory warranty support.
