Lithium Battery Options (1): 18650 and 21700 Batteries
In today’s technological era, the importance of lithium batteries as an important energy storage device is self-evident. 18650 and 21700 lithium batteries are common types and sizes of lithium batteries on the market. For consumers, it is especially critical to choose a cost-effective lithium battery, so the priority is to say that these two models to say.
First, the battery introduction
18650 means that the diameter of 18 mm, 65 mm long.
21700 means that the diameter of 21 mm, 70 mm long.
18650 and 21700 batteries are a standard cylindrical lithium batteries, its size specifications unified, with high energy density and stability.
The energy density of branded battery production is roughly 135-270Wh/kg (the energy density of power battery is generally smaller than the energy density of energy storage battery)
18650 battery capacity in 1500mAh-3500mAh (already 4000mAh), the
21700 battery capacity of 4000mAh-5000mAh (6000mAh).
Second, product applications
18650 and 21700 batteries have a wide range of applications.
In the field of consumer electronics, it is a common power source choice for devices such as laptop computers, rechargeable batteries, desktop and handheld fans, Bluetooth speakers, and drones;
In transportation, light electric vehicles such as e-bikes and balance bikes often use this battery to provide power;
In the field of lighting, such as strong flashlights, headlamps, emergency lights, portable desk lamps, etc., 18650 and 21700 batteries can guarantee long-time lighting needs;
In the home field, such as sweeping robots, vacuum cleaners, mite removers and so on;
In the industrial field, many electric tools, such as drills, sanders, etc. rely on 18650 and 21700 batteries to play a role.
In addition, cylindrical batteries are indispensable in new energy storage systems (home energy storage, outdoor power), aerospace and other fields.
Post time: Jul-03-2025
