Streamlight 22101 18650 Battery Stick 3.7V Li-Ion 2600mAh Rechargeable Power Source

The Streamlight 22101 18650 battery stick is a rechargeable lithium-ion power source built to keep your tactical flashlights and other Streamlight gear running in the field. Whether you're hunting in low light, conducting a night operation, or working a remote camp, having a reliable spare battery means you're never caught without illumination when it matters most. This 3.7V Li-Ion cell delivers 2,600 mAh of capacity in the widely compatible 18650 form factor, so it'll work with most modern Streamlight flashlights and compatible devices that accept standard rechargeable batteries.

Lithium-ion chemistry means no memory effect and faster charging cycles compared to older battery types—you can top it off whenever convenient without worrying about depleting it first. That efficiency translates to longer runtimes on the job and fewer dead batteries in your pack. At 2,600 mAh, you get solid capacity for extended use, whether you're running a light through a long patrol, extended hunting session, or weekend overlanding trip.

For hunters, shooters, and outdoor professionals, redundancy is part of the plan. Keep a spare Streamlight 18650 battery in your bag or truck as backup power. Recharge it at home or at camp, and you've got a fresh cell ready for the next mission.

Key Features

• 3.7V lithium-ion chemistry for reliable, consistent power delivery
• 2,600 mAh capacity supports extended runtime in the field
• 18650 form factor fits Streamlight flashlights and compatible devices
• Rechargeable design eliminates disposable battery waste
• No memory effect—charge when convenient

Specifications

Voltage	3.7V
Chemistry	Lithium-Ion (Li-Ion)
Capacity	2,600 mAh
Form Factor	18650 Battery Stick
Quantity Included	1

Frequently Asked Questions

What Streamlight flashlights use the 18650 battery?

The 18650 is a standard rechargeable battery format used in many modern Streamlight tactical and outdoor flashlights. Check your light's manual or product page to confirm compatibility before purchase.

Can I use this battery in non-Streamlight devices?

Yes—the 18650 is a universal form factor. As long as your device accepts 18650 cells and is compatible with 3.7V lithium-ion batteries, this Streamlight cell will work. Always verify your device's specifications first.

How do I charge this battery?

The Streamlight 22101 is rechargeable, but the specific charging method depends on your Streamlight light's built-in charging port or a compatible external 18650 charger. Consult your flashlight's manual for charging instructions.

Is this a single battery or a pack?

This is a single 18650 battery cell. One battery comes in the package.