UltraFire® Battery

​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.​

Powering Performance with Reliability

UltraFire® batteries are engineered for high-demand applications, from tactical flashlights to industrial devices.
18650 2600mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire
18650 2600mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire

UltraFire 18650 Rechargeable Battery 2600mAh

2600mAh | 3.7V | Unprotected

UltraFire 18650 rechargeable battery delivers high-drain, reliable power for flashlights, headlamps, and electronics in a compact, lightweight design.
$0.00
$23.99
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18650 2600mAh 3.7V Rechargeable Batteries (2-Pack) - With Protection Board - UltraFire
18650 2600mAh 3.7V Rechargeable Batteries (2-Pack) - With Protection Board - UltraFire

UltraFire 18650 Rechargeable Battery 2600mAh

2600mAh | 3.7V 5.2A | Protected

The UltraFire 18650 Battery 2600mAh delivers 3.7V, 4–5A discharge, and built-in protection, providing safe, high-performance, rechargeable power for flashlights and outdoor gear.
$0.00
$20.99
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18650 3000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire
18650 3000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 18650 Rechargeable Battery 3000mAh

3000mAh | 3.7V | Unprotected

The UltraFire 18650 3000mAh rechargeable battery delivers safe, reliable power with consistent output, long-lasting performance, and trusted certifications for everyday use.
$0.00
$22.99
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18650 3000mAh 3.7V Rechargeable Batteries (2-Pack) - With Protection Board - UltraFire
18650 3000mAh 3.7V Rechargeable Batteries (2-Pack) - With Protection Board - UltraFire

UltraFire 18650 Rechargeable Battery 3000mAh

3000mAh | 3.7V | Protected

UltraFire 18650 rechargeable battery delivers safe charging, built-in protection, and reliable long-lasting power for high-drain devices and flashlights.
$31.99
$23.99
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18650 3000mAh 3.7V Pro Rechargeable Batteries (2-Pack) - UltraFire
18650 3000mAh 3.7V Pro Rechargeable Batteries (2-Pack) - UltraFire

UltraFire Pro 18650 Rechargeable Battery 3000mAh

3000mAh | 3.7V 6A | Protected

High-capacity and durable, the UltraFire 18650 Pro Rechargeable Battery 3000mAh delivers 3.7V, 6A max discharge, and built-in protection—rechargeable over 1500 times. Pack of 2, perfect for flashlights, headlamps, and high-drain devices.
$25.99
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18650 3400mAh 3.7V Rechargeable Micro-USB Battery (2-Pack) - UltraFire
18650 3400mAh 3.7V Rechargeable Micro-USB Battery (2-Pack) - UltraFire

UltraFire 18650 Rechargeable Battery | Micro-USB Charger

3400mAh | Micro-USB | Protected

Reliable and convenient, the UltraFire 18650 Battery 3400mAh delivers 3.7V, 6.8A max current, and built-in protection, with USB recharge for flashlights, cameras, and other high-drain devices.
$33.99
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21700 5000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire
21700 5000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 21700 Rechargeable Battery

5000mAh | 3.7V | Protected

The UltraFire 21700 5000mAh rechargeable battery powers with high-drain output, built-in protection, and long-lasting, rechargeable reliability.
$41.99
$30.99
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26650 5000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire
26650 5000mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 26650 Rechargeable Battery

5000mAh | 3.7V 10A | Protected

Powerful and reliable, the UltraFire 26650 rechargeable battery 5000mAh delivers 3.7V, high discharge current, and over 1500 recharge cycles—perfect for flashlights, headlamps, and high-drain devices. Pack of 2, protected and certified for safe use.
$39.99
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10440 500mAh 3.7V Rechargeable Batteries (2/10-Pack) - UltraFire
10440 500mAh 3.7V Rechargeable Batteries (2/10-Pack) - UltraFire

UltraFire 10440 Battery

500mAh | 3.7V | Protected

The UltraFire 10440 500mAh battery delivers compact, protected, and reliable 3.7V power for small flashlights and gadgets.
$19.99
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14500 battery for rechargeable flashlight
14500 battery for rechargeable flashlight

UltraFire 14500 Rechargeable Battery (2-Pack)

500mAh | 3.7V | Protected

The UltraFire 14500 rechargeable battery ensures your flashlights and electronics stay powered safely and reliably, keeping your devices ready when you need them.
$16.99
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16340 880mAh 3.6V Rechargeable Batteries (2-Pack) - UltraFire
16340 880mAh 3.6V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 16340 Rechargeable Battery

880mAh | 3.6V | Protected

The UltraFire 16340 battery provides safe, reliable power for flashlights and gadgets, keeping your devices ready whenever and wherever you need them.
$17.99
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17670 1800mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire
17670 1800mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 17670 Rechargeable Battery

1800mAh | 3.7V | Protected

The UltraFire 17670 rechargeable battery delivers safe charging, built-in protection, and long-lasting reliable power.
$18.99
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18350 1200mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire
18350 1200mAh 3.7V Rechargeable Batteries (2-Pack) - UltraFire

UltraFire 18350 Rechargeable Battery

1200mAh | 3.7V

The UltraFire 18350 1200mAh rechargeable battery powers with compact design, reliable 3.7V output, and long-lasting rechargeable performance.
$16.99
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18650 1800mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire
18650 1800mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire

UltraFire 18650 Rechargeable Battery 1800mAh

1800mAh | 3.7V

The UltraFire 18650 rechargeable battery provides reliable, high-drain power for flashlights and electronics, delivering consistent performance and long-lasting use.
$0.00
$19.99
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18650 2200mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire
18650 2200mAh 3.7V Rechargeable Batteries (2/4-Pack) - UltraFire

UltraFire 18650 Rechargeable Battery 2200mAh

2200mAh | 3.7V

The UltraFire 18650 3.7V rechargeable battery delivers powerful, dependable energy for high-drain devices, ensuring long-lasting performance and consistent reliability.
$0.00
$21.99
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AA 2800mAh 1.5V Alkaline Batteries (2-Pack) - With Protection Board - UltraFire
AA 2800mAh 1.5V Alkaline Batteries (2-Pack) - With Protection Board - UltraFire

UltraFire AA Battery

2800mAh | 1.5V | Protected

UltraFire AA 2800mAh 1.5V batteries deliver long-lasting, high-performance power for toys, remotes, flashlights, and daily devices.
$19.99
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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

Q3: What’s the safe way to store spare batteries?

A: Keep at 40-80% charge in fireproof containers. Our anti-corrosion terminals resist oxidation for 18+ months storage (tested at 77°F/60% humidity).

Q5: How many times can I recharge them?

A: Achieve 1000+ cycles by avoiding full discharges.

Explore by UltraFire® Lighting Product Category

Choose a lighting category to shop our extensive catalog of lighting products and accessories.