The 32140 cylindrical battery cell is a popular model among large-format cylindrical batteries. With its multi-scenario adaptability, it has rapidly gained popularity in energy storage, low-speed power, and other fields. Its model number denotes fixed physical dimensions: 32mm in diameter and 140mm in height. The mainstream variants cover two chemical systems—lithium iron phosphate (LFP) and sodium-ion—with capacities concentrated at 10Ah and 15Ah. Some manufacturers have planned specifications of over 20Ah. Below is a detailed analysis from multiple dimensions.

The model “32650” represents standardized dimensions, with a diameter of approximately 32 millimeters and a height of approximately 65 millimeters. It adopts a high-strength cylindrical steel shell design, balancing structural stability and lightweight requirements.

In today’s era of increasingly diverse new energy application scenarios, the quality and compatibility of lithium batteries directly affect business efficiency and user experience. Enov (Huizhou) New Energy Technology Co., Ltd., as a high-tech enterprise focusing on the lithium-ion battery field, integrates R&D, production, marketing, and after-sales services. With profound technical accumulation and strict quality control, it provides comprehensive solutions for B-end customers. This selection guide will help you quickly match suitable products and avoid common pitfalls based on core needs.

This article explores how the 18650 cylindrical lithium battery – a mature “small battery” with a diameter of 18mm and height of 65mm – can unlock business opportunities in the fast-growing humanoid robot industry, amid challenges like unmass-produced solid-state batteries and high-cost large cylindrical batteries.

The 21700 cylindrical lithium-ion battery cell is a key specification in the lithium-ion battery field. With its balanced performance in capacity, energy density, and power output, it has become a core power supply component for high-energy-consumption equipment and large-scale energy storage scenarios. Its technological iteration and application expansion are driving the upgrading of related industries.

The following will elaborate on it in terms of basic composition, working principle, core performance, application scenarios, and usage precautions.