18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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What You Need to Know About Lithium Iron Phosphate (LiFePO4) Batteries

release time:2025-08-07 Hits:     Popular:AG11 battery


Lithium iron phosphate (LiFePO4) batteries, a popular lithium-ion chemistry, stand out for their unique combination of safety, durability, and performance, making them suitable for diverse applications. One of their most celebrated features is enhanced safety. Unlike other lithium chemistries (such as lithium cobalt oxide), LiFePO4 batteries are highly resistant to thermal runawaya dangerous reaction that can cause fires or explosions when batteries are overcharged, short-circuited, or exposed to high temperatures. Their stable chemical structure ensures they remain thermally stable even under extreme conditions, making them a preferred choice for applications like electric vehicles, solar energy storage, and medical devices.

LiFePO4 batteries also boast an exceptionally long cycle life. They can endure 2000-5000 charge-discharge cycles (and often more) while retaining over 80% of their original capacity, far exceeding the lifespan of lead-acid batteries and even other lithium-ion types. This longevity makes them cost-effective in the long run, despite their higher initial price, especially for stationary energy storage systems where replacement costs are high. Additionally, they perform well across a wide temperature range, operating efficiently from -20°C to 60°C, which is crucial for outdoor applications like solar power banks or electric scooters used in varying climates.

Another advantage is their low toxicity and environmental friendliness. LiFePO4 batteries contain no heavy metals like lead or cobalt, reducing environmental harm during production, use, and recycling. They also have a lower self-discharge rate (around 2-3% per month) compared to other lithium chemistries, ensuring they retain charge for longer periods when not in use. However, LiFePO4 batteries have a slightly lower energy density than some lithium-ion variants (e.g., NCM batteries), which means they are slightly heavier for the same energy storage. Despite this, their safety and durability make them indispensable in applications prioritizing reliability and longevity.


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