Onlybatteries.com - 18500 Batteries

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3.2 Volt 18500 1000 mAh LifeP04 Battery (Button Top)

SKU: 25012

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18500 3.2 Volt LiFePO4 Battery (800 mAh)

SKU: 15827

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Sale: $7.69

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18500 3.2 Volt LiFePO4 Flat Top Battery (900 mAh)

SKU: 22484

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Sale: $7.99

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4/3 A 3.7 Volt Lithium Ion 18500 Battery (1600 mAh)

SKU: 23824

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4/3 A 3.7 Volt Lithium Ion 18500 Battery with Tabs (1500 mAh)

SKU: 15038

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Sale: $9.29

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3.6 Volt ER18505 Primary Lithium Battery (3600 mAh)

SKU: 16339

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Sale: $12.99

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Buy 71 - 200 and pay only $7.99 each

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3.2V 800 mAh (18500) LiFeP04 Battery Pack for Gama Sonic Solar Lights

SKU: 22490

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Sale: $23.99

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4-Pack 18500 3.2 Volt 800 mAh LiFePO4 Batteries

SKU: 21932

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Sale: $30.69

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3-Pack 3.6 Volt ER18505 Primary Lithium Batteries (3600 mAh)

SKU: 25989

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6-Pack 4/3 A 3.7 Volt Lithium Ion 18500 Batteries with Tabs (1400 mAh)

SKU: 26008

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8-Pack 18500 3.2 Volt 800 mAh LiFePO4 Batteries

SKU: 21879

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12-Pack 4/3 A 3.7 Volt Lithium Ion 18500 Batteries with Tabs (1400 mAh)

SKU: 26009

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18500 Rechargeable Batteries

The 18500 battery is a high-performance, rechargeable Lithium-Ion (Li-Ion) or Lithium Iron Phosphate (LiFePO4) battery, commonly used in electronic devices requiring robust power output and long runtimes. With dimensions of 18mm in diameter and 50mm in length, the 18500 battery is slightly shorter than the 18650 battery, making it a more compact option for applications with limited space. Featuring a nominal voltage of 3.7 volts and a capacity between 1400 and 2000 mAh, the 18500 battery is ideal for high-drain devices that need dependable, long-lasting power.

Features of 18500 Batteries

The 18500 battery is designed with various features that make it suitable for high-drain and portable applications:

High Energy Density: Known for its high energy density, the 18500 battery can store a significant amount of energy within a compact form, making it perfect for devices where space is limited.
Rechargeable: 18500 batteries can be recharged multiple times, providing a cost-effective and eco-friendly option compared to disposable batteries.
High Discharge Rate: The 18500 battery can deliver a large amount of power quickly, which is essential for high-drain applications.
Compact Size: With its smaller dimensions relative to similar high-drain batteries, the 18500 is ideal for portable devices requiring both power and compactness.
These features make the 18500 battery a popular choice for users seeking reliable, long-lasting power in high-drain devices.

Common Applications for 18500 Batteries

The 18500 battery’s combination of high voltage, capacity, and rechargeability makes it suitable for a variety of demanding applications, including:

Flashlights: Many high-power LED flashlights use 18500 batteries for their compact size and ability to deliver high output, which provides longer-lasting illumination.
Solar Lights: In solar-powered lighting, the 18500 battery stores energy during the day to power the lights at night, making it ideal for outdoor applications where long runtime is essential.
Power Tools: Some compact power tools utilize 18500 batteries, taking advantage of their high energy output and rapid discharge rate to support demanding tasks.
Other High-Drain Devices: Devices such as wireless security cameras, GPS units, and certain electronics also benefit from the 18500’s reliable and high-powered performance.
The high discharge rate and rechargeability of 18500 batteries make them especially valuable in applications that require continuous, dependable power.

Types of 18500 Batteries

The 18500 battery is available in two main chemistries: Lithium-Ion (Li-Ion) and Lithium Iron Phosphate (LiFePO4). Each chemistry has unique advantages and is suited to specific applications:

1. Lithium-Ion (Li-Ion) 18500 Batteries

Voltage: Typically 3.7 volts.
Best For: High-drain devices that require consistent, long-lasting power, such as flashlights and portable tools.
Advantages:
High energy density for extended runtime.
Rechargeable, making them a cost-effective choice for frequent use.
Considerations: Requires specific chargers designed for Li-Ion batteries. It’s essential to avoid overcharging, as this can reduce the battery’s lifespan or potentially pose safety risks.
2. Lithium Iron Phosphate (LiFePO4) 18500 Batteries

Voltage: Typically 3.2 volts (slightly lower than Li-Ion).
Best For: Applications where enhanced stability and safety are priorities, such as solar lights or emergency lighting.
Advantages:
Excellent thermal and chemical stability, reducing the risk of overheating.
Longer cycle life, often withstanding more recharge cycles than Li-Ion batteries.
Considerations: Lower nominal voltage means they may not be compatible with devices designed specifically for 3.7V Li-Ion batteries.

Benefits of 18500 Batteries

18500 batteries provide several advantages, particularly for users seeking a compact, rechargeable power source:

Rechargeable and Cost-Effective: Unlike disposable batteries, 18500 batteries can be recharged multiple times, offering substantial savings over time.
High Voltage Output: With a nominal voltage of 3.7 volts (or 3.2 volts for LiFePO4), the 18500 battery is capable of powering high-drain devices effectively.
Eco-Friendly: Being rechargeable, 18500 batteries reduce waste, making them a more sustainable option than disposable batteries.
Compact Yet Powerful: The smaller size of the 18500 battery compared to other high-drain batteries (like the 18650) makes it an excellent choice for devices where space is limited but power requirements are high.
These benefits make 18500 batteries ideal for applications requiring a balance of performance, rechargeability, and space efficiency.

Key Considerations When Choosing an 18500 Battery

When selecting an 18500 battery, it’s essential to consider factors such as device compatibility, specific chemistry, and charging requirements. Here are some key considerations:

Device Compatibility: Verify that your device is compatible with the 3.7-volt or 3.2-volt output of an 18500 battery. Devices designed for standard AA or lower-voltage batteries may not support the increased voltage.
Battery Chemistry: Choose the appropriate chemistry based on your device’s requirements and safety considerations. Li-Ion 18500 batteries are well-suited for high-drain devices, while LiFePO4 batteries offer enhanced stability and are ideal for applications like solar lighting.
Charging Requirements: 18500 batteries need specific chargers that match their chemistry. For instance, Li-Ion batteries require a charger compatible with their voltage and charging profile. Using the wrong charger can shorten battery life or present safety risks.
Capacity and Runtime: Capacity ranges from 1400 to 2000 mAh, impacting how long the battery lasts on a single charge. For high-drain devices, a higher capacity 18500 battery will offer extended runtime.
Environmental Conditions: If the battery will be used in extreme conditions, consider choosing a LiFePO4 18500 battery, as it offers better stability and safety in challenging environments.

Popular 18500 Battery Brands

Onlybatteries.com offers a selection of trusted 18500 battery brands known for quality, reliability, and safety:

Nitecore: Nitecore’s 18500 batteries are designed for high-drain devices, providing dependable performance and a long lifespan.
Tenergy: Tenergy produces both Li-Ion and LiFePO4 18500 batteries, suitable for a variety of applications, including solar lighting and flashlights.
Efest: Efest is known for high-quality Li-Ion 18500 batteries, offering consistent performance and stable power output.

Choosing the Ideal 18500 Battery

The 18500 battery is a compact, rechargeable power source ideal for high-drain applications requiring consistent, long-lasting energy. Here’s a quick recap of the types and key considerations:

Lithium-Ion (Li-Ion) 18500 Batteries: 3.7 volts, ideal for high-drain devices like flashlights and power tools, known for high energy density.
Lithium Iron Phosphate (LiFePO4) 18500 Batteries: 3.2 volts, offering enhanced safety and stability, ideal for solar lights and emergency lighting.

By selecting the appropriate 18500 battery for your device, you can maximize performance, reduce long-term costs, and enjoy an eco-friendly, rechargeable power source. Whether you need power for high-performance gadgets or sustainable solutions for solar lighting, Onlybatteries.com offers a range of 18500 battery options to meet every need.

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