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Rectangular silver lithium-ion battery with blue label, 2.6Ah 3.7V

Kastar

Kastar 74175 3.7V 2.6Ah Li-ion Battery

SKU CH-GA4E-1Z08K

3.7 V, 2.6 Ah lithium-ion cell replaces the Streamlight 74175 battery in Strion and ProTac flashlights and headlamps

  • Total capacity9.36 Wh
  • Pack contents1 Battery
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 1 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Extended runtime with 2600 mAh capacity
  • Replaces Streamlight 74175 across multiple flashlights and headlamps
  • Built-in protection against over-charge, over-discharge, over-voltage, over-current and over-heating
  • Meets UL1642 and CE safety standards
  • Compact 70.3 × 20.6 × 20.6 mm lithium-ion cell

High-Capacity Replacement Battery

The Kastar 74175 lithium-ion cell delivers 3.7V and 2.6Ah capacity for compatible Streamlight flashlights and headlamps. It replaces the original Streamlight 74175 battery in models such as the Strion Switchblade, Strion LED series, ProTac HL USB lights and Twin-Task USB headlamp.

Compact Build With Safety Circuitry

Measuring 70.3 x 20.6 x 20.6 mm, the pack fits the existing battery compartment without modification. The integrated protection circuit guards against over-charge, over-discharge, over-voltage, over-current and over-heating, and the cells meet UL1642 and CE safety standards.

Verify Model Before Ordering

Confirm your device uses the Streamlight 74175 battery; the replacement only fits the flashlights and headlamps listed in the compatibility data. Check that your charger supports 3.6V lithium-ion cells to avoid charging issues.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 65% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model name74175
Part numberBA-1B-74175-A
Total capacity9.36 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 1 in
In the box
Pack contents1 Battery

Other versions of this model

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Questions about this item

What voltage does the 3.7 V 2600 mAh cell deliver?

The lithium-ion cell is rated at 3.6 V nominal and 3.7 V peak, providing 9.36 Wh of energy.

Will the 70.3 × 20.6 × 20.6 mm pack fit my Strion flashlight?

The battery measures 2.77 × 0.81 × 0.81 inches, matching the original Streamlight 74175 form factor for direct fit.

How do I install the replacement cell in a ProTac HL USB headlamp?

Remove the tail cap, insert the cell positive-end first, and ensure the built-in protection circuit board seats fully before tightening.

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