Streamlight SL-B2 Rechargeable Battery Pack (2-Pack) - Model 22121

The Streamlight SL-B2 rechargeable battery pack keeps your TLR-6 HL weapon-mounted light ready to go without constantly swapping out disposables. This 2-pack gives you a spare set charged and staged while one pair runs your light in the field—essential backup for serious shooters and tactical users who can't afford downtime. Unlike single-use batteries, rechargeables pay for themselves fast and eliminate the waste of dead cells piling up in your range bag.

The included USB-C charging case handles both cells at once, so you're never left with one battery juiced while the other drains. Charge indicators let you know exactly where each battery stands, so there are no surprises when you need them. Whether you're training at the range, running a home defense drill, or keeping your duty weapon lit, having two fresh packs in rotation means your light is always mission-ready.

Built for the reliability Streamlight is known for, the SL-B2 batteries integrate seamlessly with the TLR-6 HL platform. For shooters who run their weapon lights hard and often, this 2-pack paired with the USB-C case is the smart play—it's cleaner than disposables, faster than hunting for replacements, and designed to keep pace with your schedule, not slow you down.

Key Features

• Rechargeable battery pack for Streamlight TLR-6 HL series lights
• Two-pack gives you a spare set while one charges
• USB-C charging case stores and charges both batteries simultaneously
• Charge indicators on case show battery status at a glance
• Eliminates need for disposable batteries on duty weapons and training lights

Specifications

Frequently Asked Questions

What lights do these SL-B2 batteries work with?

The SL-B2 rechargeable batteries are designed for the Streamlight TLR-6 HL series of weapon-mounted lights.

What's included with this 2-pack?

You get two SL-B2 rechargeable batteries and a USB-C charging case that holds and charges both cells. The case also displays charge indicators so you can monitor battery status.

How do I charge these batteries?

Both batteries charge together in the included USB-C charging case. Simply plug the case into any USB-C power source, and the built-in charge indicators show you the status of each battery.

Why choose rechargeable batteries over disposables for my weapon light?

Rechargeable batteries eliminate the need to constantly buy and replace disposables, save money over time, reduce waste in your gear, and ensure you always have a fresh set staged and ready. For shooters who train or carry frequently, the convenience and reliability pay for themselves quickly.