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Three cylindrical 3.7V 2.6Ah lithium-ion batteries in a pack

Kastar

Kastar 74175 3.7V 2.6Ah Li-ion battery 3-pack

SKU CH-HG39-K85Y6

Three 3.7 V 2.6 Ah lithium-ion cells replace Streamlight 74175 batteries in Strion and ProTac lights, with built-in protection circuits meeting UL1642 and CE standards

  • TypeBattery
  • Pack3 Batteries
  • ChemicalLi-Ion
  • Capacity9.36 Wh
  • Dimensions3*2*3 Inch
  • FeaturesHigh Capacity and Manufacture Price.
  • Longer run time for flashlights with 2.6 Ah capacity
  • Reliable power at 3.7 V nominal voltage for compatible Streamlight devices
  • Safer operation through UL1642 and CE certified cells with multi-protection circuit
  • Ready-to-use triple pack of 74175 lithium-ion batteries
  • Compact 70.3 × 20.6 × 20.6 mm cells fit Strion and ProTac models

Kastar 74175 3.7V 2.6Ah Li-ion Battery 3-Pack

This pack supplies three lithium-ion cells rated at 3.7 volts and 2.6 ampere-hours each. They serve as direct replacements for the Streamlight 74175 battery used in several Strion and ProTac flashlights and headlamps. Users who rely on those lights for daily work or outdoor tasks gain spare power without changing form factor.

Thermals Noise and Power Draw

Lithium-ion chemistry produces minimal heat during typical discharge cycles in handheld lights. The built-in protection circuit guards against over-charge, over-discharge, over-voltage, over-current and over-heating conditions. No audible noise is generated and the cells meet UL1642 and CE safety standards for reliable operation.

Build Integration

Each cell measures 70.3 by 20.6 by 20.6 millimetres, matching the original Streamlight profile. The three-pack lets you keep one in the light, one charging and one in reserve. Buyers who need higher capacity than 2.6Ah or a different voltage will not be served by this model.

Highlights

  • Longer run time for flashlights with 2.6 Ah capacity
  • Reliable power at 3.7 V nominal voltage for compatible Streamlight devices
  • Safer operation through UL1642 and CE certified cells with multi-protection circuit
  • Ready-to-use triple pack of 74175 lithium-ion batteries
  • Compact 70.3 × 20.6 × 20.6 mm cells fit Strion and ProTac models

Specifications

BrandKastar
Model74175
Part NumberBA-3B-74175-A
TypeBattery
Pack3 Batteries
ChemicalLi-Ion
Capacity9.36 Wh
Dimensions3*2*3 Inch
FeaturesHigh Capacity and Manufacture Price.

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Questions about this item

How do I install the Kastar 74175 3.7V 2.6Ah Li-ion battery in my Streamlight Strion or ProTac device?

Insert the 70.3 x 20.6 x 20.6 mm cell into the battery compartment with the positive contact facing the marked terminal; the built-in protection circuit prevents damage if orientation is reversed.

What maintenance or replacement will the Kastar 74175 3-pack need over time?

The 2600mAh lithium-ion cells lose capacity after repeated charge cycles; replace the pack when the flashlight run time becomes noticeably shorter than when the batteries were new.

What limit appears first during sustained high-output use of these 3.6V 9.36Wh batteries?

The over-heating protection circuit will interrupt power before the cells reach an unsafe temperature, causing the light to step down or shut off until the pack cools.

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