Will this work with the older Protac 2L?

No! Just a hair too thick... I have the 2L also, so I thought it would too, but it did NOT, bummer!

Are they AA batteries

No, these are an 18650 3.7v lithium battery with a usb charger on the end of it, making it a bit longer than a standard 18650. So it is larger than a aa battery in every dimension, and has over double the voltage. The added length because of the usb charger cap means it also probably won’t be usable in most 18650 applications. But on the plus side, if you just need a 3.7v lithium ion source, and don’t want to have to use a special charger, this could be used and recharged with a micro usb cable.

will this work in the HLX 1000 Weapon light?

I have the flashlight based on this pic rail mounted light. The Streamlight branded battery will fit. There is enough room in the case to accommodate the longer length of the battery. It is one of the few Streamlight single cell flashlights that will.

Can i use these for a vape?

Almost all vapes will use a flat top design so try looking up 18650 flat top

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STREAMLIGHT YYST WDDAF-FFSFUS1-1048

Product ID: 680970340

Details

Battery cell composition
Lithium
Brand
STREAMLIGHT
Number of batteries
2 Product
Recommended uses for product
Flashlights
Unit count
2.0 Count

⚡Built-in safety circuit

🔋5-hour fast recharge

🔌Universal Micro-USB input

Description

🔋 Power Up Smart, Stay Ahead Always

UPGRADE YOUR GEAR - Transforms select Streamlight flashlights into rechargeable powerhouses—ditch disposable batteries forever.
SMART SAFETY FIRST - Integrated circuit prevents overcharge and over-discharge for battery longevity.
LIGHTWEIGHT COMPACT - Sleek 47g design fits seamlessly into your high-performance lighting tools.
UNIVERSAL USB COMPATIBILITY - Charges from most USB sources—no proprietary charger needed (charger sold separately).
FAST RECHARGE ZERO DOWNTIME - Recharge fully in just 5 hours via Micro-USB—stay powered and ready.

The STREAMLIGHT YYST WDDAF-FFSFUS1-1048 is a lightweight, 47g SL-B26 protected lithium-ion rechargeable battery pack featuring a built-in Micro-USB charging port. It fully recharges in 5 hours, includes an integrated safety circuit to prevent overcharge and over-discharge, and is compatible with a wide range of Streamlight USB flashlights. This battery pack enables professionals to convert disposable battery flashlights into efficient, rechargeable systems, enhancing reliability and reducing waste.

Specifications

ASIN	B088NGD584
Antenna Location	Flashlights
Battery Cell Type	Lithium
Brand	STREAMLIGHT
Customer Reviews	4.7 4.7 out of 5 stars (28)
Global Trade Identification Number	00080926221048
Item Dimensions	7 x 1.9 x 1.9 centimeters
Item Weight	47 Grams
Model Number	22104
Number of Batteries	2 Product Specific batteries required. (included)
Reusability	Rechargeable
UPC	080926221048
Unit Count	2.0 Count
Voltage	3.7 Volts

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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The product quality is outstanding. Exactly what I needed for my work.

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