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Two cylindrical Kastar 74175 lithium-ion batteries side by side

Kastar

Kastar 74175 3.7V 2.6Ah 2-Pack Li-Ion Battery

SKU CH-ZDG4-CACCD

Two 3.7V 2.6Ah lithium-ion cells replace Streamlight 74175 batteries in Strion and ProTac lights with UL1642 and CE protection circuits

  • TypeBattery
  • Pack2 Batteries
  • ChemicalLi-Ion
  • Capacity9.36 Wh
  • Dimensions3*2*2 Inch
  • FeaturesHigh Capacity and Manufacture Price.
  • High-capacity 2.6 Ah cells extend flashlight runtime
  • 7 V Li-Ion chemistry matches original Streamlight 74175 specs
  • UL1642 and CE certified cells with multi-protection circuit
  • Two-pack delivers spare power for Strion and ProTac models
  • Compact 70.3 × 20.6 mm form factor fits existing battery compartments

Kastar 74175 Li-Ion 2-Pack

This two-pack supplies 3.7 V, 2.6 Ah lithium-ion cells rated at 9.36 Wh each. They are built as direct replacements for the Streamlight 74175 battery used in Strion and ProTac flashlights or headlamps. The pack suits professionals and hobbyists who need reliable, drop-in power for compatible lighting tools.

Built-In Protection and Safety

Each cell includes over-charge, over-discharge, over-voltage, over-current and over-heating circuits. The chemistry meets UL1642 and CE standards, so normal operation stays within tested safety limits. Low self-discharge and stable voltage help the lights maintain consistent output during extended use.

Fits Strion and ProTac Models

Cells measure 70.3 x 20.6 x 20.6 mm and match the original form factor for Strion Switchblade, Strion LED, HL, HPL, DS variants, ProTac HL USB flashlights and Twin-Task USB headlamps. No adapter or modification is required. Buyers whose devices use a different battery form factor or voltage should verify compatibility before purchasing.

Highlights

  • High-capacity 2.6 Ah cells extend flashlight runtime
  • 7 V Li-Ion chemistry matches original Streamlight 74175 specs
  • UL1642 and CE certified cells with multi-protection circuit
  • Two-pack delivers spare power for Strion and ProTac models
  • Compact 70.3 × 20.6 mm form factor fits existing battery compartments

Specifications

BrandKastar
Model74175
Part NumberBA-2B-74175-B
TypeBattery
Pack2 Batteries
ChemicalLi-Ion
Capacity9.36 Wh
Dimensions3*2*2 Inch
FeaturesHigh Capacity and Manufacture Price.

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Questions about this item

How do I install the Kastar 74175 battery in my Strion Switchblade, and what step do people often miss?

Slide the battery into the flashlight body with the positive end toward the head until it seats firmly; the step users miss is confirming the built-in protection circuit clicks into the contacts so over-charge and over-discharge safeguards activate.

What maintenance or replacement will the Kastar 74175 2-pack need over time?

The 2600 mAh lithium-ion cells gradually lose capacity after repeated cycles; replace both batteries together when run-time drops noticeably, typically after several hundred full charge-discharge cycles.

What limit appears first during sustained high-output use of the Kastar 74175 in a Strion LED HL?

The over-heating protection circuit triggers first, cutting power when internal temperature exceeds the safe threshold during prolonged turbo-mode operation.

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