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Four cylindrical 3.7V lithium-ion batteries in a pack

Kastar

Kastar 74175 3.7V 2.6Ah 4-Pack Li-Ion Flashlight Battery

SKU CH-DDVE-YD20Y

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

  • Total capacity9.36 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Extended run time for flashlights with 2.6Ah capacity
  • Replaces Streamlight 74175 across Strion and ProTac models
  • UL1642 and CE certified cells with multi-protection circuit
  • Four-battery pack reduces cost per unit and downtime
  • Compact 70.3 x 20.6 x 20.6 mm lithium-ion cells fit existing compartments

Kastar 74175 Li-Ion 4-Pack for Streamlight Devices

This four-pack of 3.7 V lithium-ion cells delivers 2.6 Ah each, designed as direct replacements for the Streamlight 74175 battery. It suits professionals and enthusiasts who rely on Strion or ProTac flashlights and headlamps for daily duty or outdoor use.

9.36 Wh capacity per cell with built-in protection

Each battery stores 9.36 Wh at 3.6 V nominal, providing extended run-time for high-output LED lights. Integrated circuitry guards against over-charge, over-discharge, over-voltage, over-current and over-heating, so the cells operate safely until depleted.

Fits Strion and ProTac models without modification

The 70.3 x 20.6 x 20.6 mm form factor matches the original 74175 profile, slotting into Switchblade, LED, HL, HPL, DS variants and Twin-Task USB headlamps. No charger is included, so existing Streamlight charging cradles or USB cables remain necessary.

How it compares

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

Price $43.99
Pricier than about 86% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model name74175
Part numberBA-4B-74175-B
Total capacity9.36 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Will the 74175 pack fit the Strion LED HL flashlight I already own?

Yes, the supplier lists the Strion LED HL among the compatible flashlights for this 74175 battery pack.

How can I confirm each cell is delivering the rated 3.6 V after installation?

Measure the terminal voltage with a multimeter; a healthy cell should read close to 3.6 V under no load.

Does the 4-pack include a charger or only the four 2600 mAh cells?

Only the four Li-Ion cells are included; a compatible charger must be purchased separately.

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