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SL-B34 Rechargeable Battery - Streamlight, Inc

Part #: 22131

The Streamlight SL-B34 Rechargeable Battery, model 22131, offers a robust and dependable power solution for professional-grade Streamlight lighting tools. Engineered with advanced lithium-ion technology, this battery is designed to meet the rigorous demands of automotive and industrial technicians, ensuring consistent, long-lasting performance in critical work environments. It provides a reliable alternative to disposable batteries, supporting high-performance illumination when reliability is paramount.

Key Features

  • High Capacity Output: This lithium-ion battery delivers 3500mAh capacity at 3.6 volts, providing extended runtimes for compatible Streamlight flashlights during demanding tasks.
  • Integrated USB-C Charging: Equipped with a built-in USB-C port, the SL-B34 can be conveniently recharged in approximately 5 hours, either inside or outside the host flashlight, without the need for a separate charging cradle.
  • On-Board Safety Circuitry: An integrated safety control circuit protects the battery from overcharge and over-discharge, enhancing battery longevity and ensuring safe operation.
  • Clear Charge Status Indicator: A distinct red/green indicator on the battery provides immediate visual feedback on its charging status, signaling when the battery is fully charged and ready for use.
  • Durable Professional-Grade Construction: Built for repeated heavy use, this battery is designed to endure up to 1000 charge cycles and offers a typical lifespan of 3 to 5 years, providing a durable and cost-effective power solution.
  • Multi-Fuel System Compatibility: This rechargeable battery transforms compatible multi-fuel Streamlight tools into efficient, rechargeable systems, reducing reliance on disposable CR123A batteries and minimizing waste.

Applications

The Streamlight SL-B34 Rechargeable Battery is an indispensable power source for professionals across various sectors. Automotive mechanics will find it ideal for maintaining continuous illumination during under-hood inspections, chassis work, and detailed vehicle diagnostics, especially when integrated with compatible Streamlight models such as the MegaStream USB or ProTac HL-X USB. In industrial environments, this battery reliably powers the lighting tools used by maintenance crews, facility inspectors, and other technicians who require unwavering performance for extended periods in challenging conditions. Its robust design and rechargeable nature ensure consistent power for daily use in workshops, manufacturing plants, and diverse field service operations.

We have 13 in stock Inventory available from other suppliers, prices may be different

$23.87

Free shipping on orders over $250
Lower 48 states and DC. Excludes freight and oversize items.
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  • Model: 491313
  • Shipping Weight: 0.4lbs
  • UPC: 080926221314
  • Manufacturers Part #: 22131
  • Manufactured by: Streamlight, Inc
  • Also Known As: SG22131, STL-22131, STL22131

This product was added to our catalog on Sunday 19 July, 2026.

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