18650 BATTERY VS. 21700 BATTERY: A COMPREHENSIVE COMPARISON

Lithium-ion batteries are everywhere. From laptops to electric vehicles (EVs), they power our modern lives, and two of the most popular cells for high-energy applications are the 18650 battery and 21700 battery. These cylindrical cells are named after their dimensions, but they differ in capacity, energy density, and use cases. Here’s a deep di