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Rechargeable Samsung Li-Ion 18650 3500mAh 3.7V 8A |
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Producer / Offer: Samsung |
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Type of Product: Lithium-Ion Rechargeable Batteries |
Packing [pcs]: bulk |
EAN: 191156170010 |
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Weight: 50.00g |
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5.42EUR |
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FEATURES
DESCRIPTION
ABOUT THE PRODUCER
Voltage: 3.7V
Capacity: 3500mAh
Min. Capacity: 3350mAh
Standard current charge: 1700mAh
Max. continous current discharge: 8000mA
Max. impulse current discharge: 13000mA
Dimensions: 18.4x65.0mm
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Lithium-Ion Batteries – Everything You Need to Know
Lithium-ion (Li-Ion) batteries are among the most commonly used power sources in modern electronics. They stand out for their high energy density, long lifespan, and relatively low memory effect. Their wide range of applications includes consumer electronics, power tools, electric vehicles, and energy storage systems. However, their usage requires knowledge of safety principles, proper handling, and protection against damage.
The Importance of PCM Protection in Lithium-Ion Batteries
One of the key components of a Li-Ion battery is the Protection Circuit Module (PCM). This electronic system monitors the voltage, current, and temperature of the cell. Its role is to protect the battery from:
- Overcharging – an increase in voltage above a safe level can lead to overheating and, in extreme cases, an explosion;
- Over-discharge – excessively low voltage can damage the cell structure, resulting in irreversible capacity loss;
- Short circuit and overload – excessive current flow can cause the cell to overheat and lead to serious failures;
- Overheating – built-in thermal sensors can disconnect the cell in case of excessive temperature.
Thanks to PCM, Li-Ion batteries are much safer and can be used in various applications without the risk of failure.
Precautions When Using Li-Ion Batteries
To avoid potential hazards associated with lithium-ion batteries, it is essential to follow some basic rules:
1. Do not overcharge or deeply discharge – using appropriate chargers with voltage control is crucial for battery safety and longevity.
2. Avoid short-circuiting the terminals – this can damage the cell or even cause a fire.
3. Do not use damaged batteries – cracked casings, electrolyte leaks, or overheating indicate the need for replacement.
4. Do not store batteries in high temperatures – prolonged exposure to temperatures above 45°C can accelerate cell degradation.
5. Transport cells safely – it is best to use special containers or covers for the terminals to prevent accidental short circuits.
Handling for Optimal Lifespan
To maximize the lifespan of Li-Ion batteries, follow these recommendations:
- Charge up to 80–90% instead of a full 100% – this reduces chemical stress on the cell and extends its lifespan.
- Avoid deep discharges below 20% – such cycles can accelerate cell degradation.
- Store in optimal conditions – ideally at a temperature of 15–25°C and a charge level of around 40–60%.
- Use dedicated chargers – using original chargers with voltage and current control is crucial for battery safety and longevity.
Popular Types of Lithium-Ion Batteries and Their Dimensions
Many types of Li-Ion cells are available on the market, but one of the most popular is the 18650 battery. The numbers in the name indicate its dimensions: 18 mm in diameter and 65 mm in length. These cells are widely used in flashlights, laptops, power tools, and even electric vehicles.
Other popular Li-Ion battery types include:
- 21700 – a larger version of 18650 (21 mm x 70 mm), used in electric vehicles and high-performance flashlights;
- 26650 – an even larger option (26 mm x 65 mm), often used in industrial applications;
- 14500 – a battery the size of a standard AA cell (14 mm x 50 mm), used in small flashlights and electronic devices;
- 32650 – mainly used in energy storage systems, measuring 32 mm in diameter and 65 mm in length.
Significance of 18650 Batteries
18650 batteries are among the most versatile Li-Ion cells. Their high capacity (typically from 2000 to 3500 mAh), high current efficiency, and durability make them valuable in many industries. Compared to NiMH or NiCd batteries, they have a significantly higher energy density, allowing devices to operate longer on a single charge.
Due to their ability to be combined into packs, 18650 cells are widely used in laptops, e-bikes, and power tools. They are also used in energy storage systems and high-quality flashlights. Because of their characteristics, these cells require proper PCM protection, especially when operating in multi-cell setups.
Lithium-ion batteries are an irreplaceable power source in modern electronics, but their safe use requires adherence to basic principles. The PCM protection system safeguards them from dangerous situations, and proper handling ensures maximum lifespan. Among the available models, 18650 batteries play a crucial role, being widely used in various devices. By following safety rules and proper usage practices, users can enjoy their high performance for a long time.
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This product was added to our catalog on Thursday 18 November, 2021. |
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