good for Fenix flaslight?

Yes if your Fenix model is using 18650 type. (Note: some Fenix models are using 21700 types)

Are these batteries protected?

Flat top 25R is not protected. Protected cell is generally button top type. This Panasonic product is protected: https://www.amazon.com/dp/B09YRQRZV9?ref=myi_title_dp&th=1

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100% Authentic Samsung25R 3.7V Rechargeable 18650 Battery 25R Flat Top, Real 2500mAh(4 Pack, with Free Plastic Case)

100% Authentic Samsung25R 3.7V Rechargeable 18650 Battery 25R Flat Top, Real 2500mAh(4 Pack, with Free Plastic Case)

4.4/5

Product ID: 499188632

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Details

Brand
SOOCOOL
Battery Cell Composition
Lithium Ion
Unit Count
4.0 Count
Voltage
3.7 Volts
Reusability
Rechargeable

⚡20A continuous discharge

🔄Rechargeable & reusable

🔋2500mAh high capacity

Description

🔋 Power your hustle with Samsung’s authentic 25R – because second best isn’t an option.

SLEEK COMPACT DESIGN - Flat top 18650 form factor fits seamlessly into your gear without bulk.
GENUINE SAMSUNG QUALITY - 100% original, not rewrapped—trust the battery that professionals rely on.
POWER THAT LASTS ALL DAY - Authentic 2500mAh capacity ensures long-lasting energy for your devices.
BONUS ON THE GO PROTECTION - Includes a free plastic case to keep your batteries safe and organized.
UNMATCHED PERFORMANCE UNDER PRESSURE - 20A continuous discharge rate delivers reliable, high-power output when you need it most.

This 4-pack of 100% authentic Samsung 25R 18650 lithium-ion batteries offers a robust 2500mAh capacity and a 20A continuous discharge rate at 3.7V. Designed with a flat top for versatile compatibility, these rechargeable cells come with a free plastic case for safe storage. The latest 2025 version features updated markings but maintains the same trusted performance, making it the go-to choice for professionals demanding reliable, high-quality power.

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TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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E£ 5658

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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100% Authentic Samsung25R 3.7V Rechargeable 18650 Battery 25R Flat Top, Real 2500mAh(4 Pack, with Free Plastic Case)

Details

Description

Specifications

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Common Questions

Reusability	Rechargeable
Amperage	20 Amps
Voltage	3.7 Volts
Item Dimensions	0.71 x 0.71 x 2.56 inches
Battery Cell Type	Lithium Ion