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Black cylindrical tactical flashlight with textured grip, stainless steel bezel, USB-C port and smart selector ring

Nitecore

Nitecore SRT6i 2100 Lumen Tactical Flashlight

SKU CH-049S-82T8D

A rechargeable tactical flashlight delivering 2100 lumens with a 557-yard beam throw and up to 70 hours runtime

  • TypeTactical Flashlight
  • ColorBlack
  • Specifications2100 Lumens
  • 2100 lumen turbo output delivers 557 yard beam throw
  • Smart Ring selector enables one-handed mode changes
  • USB-C rechargeable with included 2150 mAh battery
  • IP68 rating plus 2 metre impact resistance for harsh conditions
  • Steel bezel with silicone nitrided inlays breaks glass in emergencies

Tactical Flashlight for Demanding Use

The Nitecore SRT6i is a tactical flashlight built for professionals and outdoor users who need high output and long-distance visibility. It delivers a maximum output of 2100 lumens with a beam throw reaching 557 yards. The Smart Ring selector allows precise, one-handed mode changes. An IP68 rating and two-metre impact resistance ensure reliability in harsh environments.

Thermals and Power in Normal Use

The included NL2150HPi battery supports a maximum runtime of over 70 hours on the low mode. The flashlight recharges via a built-in USB-C port, protected by a covered charging port design. Heavy-duty springs inside the body help maintain consistent electrical contact during extended operation. No specific thermal management data or noise figures are provided by the supplier.

Bundled Battery and Interface Benefits

The high-capacity NL2150HPi cell is included and enables the stated 70-hour low-mode runtime. USB-C charging allows convenient replenishment without a separate cradle or cable type. The tail cap design integrates a primary switch for momentary and constant activation plus an angled mode pedal for gloved operation. A stainless steel bezel with silicone nitrided inlays adds glass-breaking capability for emergency situations.

Highlights

  • 2100 lumen turbo output delivers 557 yard beam throw
  • Smart Ring selector enables one-handed mode changes
  • USB-C rechargeable with included 2150 mAh battery
  • IP68 rating plus 2 metre impact resistance for harsh conditions
  • Steel bezel with silicone nitrided inlays breaks glass in emergencies

Specifications

Part NumberSRT6i
TypeTactical Flashlight
ColorBlack
Specifications2100 Lumens

Questions about this item

How do I install the NL2150HPi battery and what step do people get wrong?

Insert the battery with the positive end toward the head, then tighten the tail cap until the charging port cover seals; the common mistake is leaving the cap loose, which breaks the IP68 seal.

What maintenance or replacement will the SRT6i need later?

The NL2150HPi cell is the only replaceable part; expect to swap it after several hundred charge cycles when runtime drops below the rated 70 hours on low.

What limit appears first during sustained turbo use?

Thermal regulation cuts the 2100 lumen output after a few minutes to protect the LED, dropping to a lower level until the light cools.

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