18650 and 21700 Batteries

18650 and 21700 batteries have become popular due to their versatility, high capacity, durability, and availability. Here are some reasons for the popularity of these batteries:

1. Versatility: These batteries are commonly used in various industries, such as electronics, electric transport, laptops, electronics recycling, portable chargers, and even in energy storage systems.
2. High capacity: 18650 and 21700 have high capacity (from 2000 mAh to 5000 mAh) compared to most other lithium-ion batteries, making them very useful for long-term use in various devices.
3. Durability: These batteries have a relatively high charge/discharge cycle and long service life, ensuring long-term use without significant capacity degradation.
4. Availability: 18650 and 21700 batteries are available on the market in large quantities, thanks to large production volumes, which leads to price reduction and ensures availability for consumers.
5. Standard sizes: These batteries have standard sizes (18650 - 18 mm in diameter and 65 mm in length, 21700 - 21 mm in diameter and 70 mm in length), allowing them to be easily integrated into many devices and systems.
6. Compatibility: 18650 and 21700 are compatible with many chargers and controllers, providing convenience.