UltraFire Rechargeable Battery Collection: AA, 18650, 26650 & Li-Ion Packs with Fast Charging

Explore our premium rechargeable battery collection featuring AA, 18650, 26650 lithium-ion packs, and 3.7V cells. Get extended runtime, 2000+ cycles, and UL-certified safety for home, industrial, and outdoor use.

Batteries

Powering Performance with Reliability

UltraFire batteries are engineered for high-demand applications, from tactical flashlights to industrial devices.

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18650 2600mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire

UltraFire 18650 2600mAh 3.7V Batteries (2/4-Pack)

$39.98

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18650 2600mAh 3.7V Rechargeable Batteries (2-Pack) - With Protection Board - UltraFire

UltraFire 18650 2600mAh 3.7V Batteries (2-Pack) - With Protection Board

$41.98

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18650 3000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 18650 3000mAh 3.7V Batteries (2-Pack)

$45.98

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18650 3000mAh 3.7V Rechargeable Batteries (2-Pack) - With Protection Board - UltraFire

UltraFire 18650 3000mAh 3.7V Batteries (2-Pack) - With Protection Board

$47.98

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18650 3000mAh 3.7V Pro Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 18650 3000mAh 3.7V Pro Batteries (2-Pack)

$51.98

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18650 3400mAh 3.7V Rechargeable Micro-USB Battery (2-Pack) - UltraFire

UltraFire 18650 3400mAh 3.7V Micro-USB Battery (2-Pack)

$67.98

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21700 5000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 21700 5000mAh 3.7V Batteries (2-Pack)

$61.98

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26650 5000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 26650 5000mAh 3.7V Batteries (2-Pack)

$79.98

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10440 500mAh 3.7V Rechargeable Batteries (2/10-Pack) - UltraFire

UltraFire 10440 500mAh 3.7V Batteries (2/10-Pack)

$31.98

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14500 1200mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 14500 1200mAh 3.7V Batteries (2-Pack)

$33.98

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16340 880mAh 3.6V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 16340 880mAh 3.6V Batteries (2-Pack)

$35.98

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17670 1800mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 17670 1800mAh 3.7V Batteries (2-Pack)

$37.98

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18350 1200mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 18350 1200mAh 3.7V Batteries (2-Pack)

$33.98

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18650 1800mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire

UltraFire 18650 1800mAh 3.7V Batteries (2/4-Pack)

$31.98

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18650 2200mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire

UltraFire 18650 2200mAh 3.7V Batteries (2/4-Pack)

$35.98

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AA 2800mAh 1.5V Alkaline Batteries (2-Pack) - With Protection Board - UltraFire

UltraFire AA 2800mAh 1.5V Alkaline Batteries - With Protection Board (10-Pack)

$19.98

UltraFire High-Performance Rechargeable Batteries | Reliable Power for Flashlights, Tools & Critical Devices

Engineered for Demanding Use: Extended Cycle Life, Multi-Device Compatibility & Advanced Safety Systems

A. Battery Engineering

Cell Chemistry: Li-ion optimized for stable discharge curves (flat 3.7V output until 90% depletion)

Model Matrix:
10440    500mAh    Mini flashlights, laser pens
16340    800mAh    Compact EDC lights
18650    1800-3400mAh    High-lumen torches
21700    5000mAh    Long-range search lights
26650    5000mAh    Extended outdoor use

B. Safety & Longevity

Overcharge defense: Precision PCB cuts off at 4.25V±0.05V

Thermal management: Nickel-plated steel casing dissipates heat 30% faster than standard cells

Cycle life optimization: 80% capacity retention after 500 cycles (lab-tested)

Frequently asked questions

Have questions? We’re here to help

Title

Q1: How do I choose between 18650 vs 21700 batteries?

A: Consider runtime needs and device size:
• 18650: Compact (18mm diameter) for 2-4hr high-power use
• 21700: Larger (21mm) for 5-8hr runtime – ideal for all-night operations