-40℃ low-temperature 21700-40L high-rate lithium battery

**-40°C low‑temperature compatibility, 3.6 V nominal voltage, and 9.5 mΩ low internal resistance**, with 8 A charging and 40 A high‑rate discharging, weighing ≤69.0 g. Featuring an NCM/NCA ternary chemistry, Changhong Sanjie’s low‑temperature, high‑rate battery cells are designed for demanding low‑temperature, high‑power applications, delivering safe and reliable performance.

Product Features

High charge–discharge rates: Designed for the most demanding professional power‑tool and other application scenarios, it can deliver ultra‑high discharge rates of up to 10–15C and support charging rates exceeding 2C.

Ultra-wide temperature performance: The battery can discharge at an ultra-low temperature of −40°C and operate at a high temperature of up to 80°C, while also delivering high‑rate discharge capability at low temperatures.

High Consistency: Produced on an intelligent manufacturing line, with end-to-end digitalization and high-precision control across all process steps, ensuring superior consistency and enhanced safety.

High Security: A fully integrated information system (CRM, PLM, SRM, MES, ERP) ensures high security.

产品分类：

Cylindrical lithium battery

21700

Keywords:

Product Inquiry
-40℃ low-temperature 21700-40L high-rate lithium battery
-40℃ low-temperature 21700-40L high-rate lithium battery
-40℃ low-temperature 21700-40L high-rate lithium battery
-40℃ low-temperature 21700-40L high-rate lithium battery

The 21700‑40L is a low‑temperature, high‑rate battery cell based on an NCM/NCA ternary chemistry. Its key selling points are its ability to operate reliably at −40°C and its high‑rate discharge capability of 40 A, coupled with a stable 3.6 V nominal voltage and a low internal resistance of 9.5 mΩ. It also supports efficient 8 A charging. This cell is ideally suited for low‑temperature, high‑power outdoor equipment and cold‑chain energy storage applications. The cell employs a high‑nickel, low‑temperature‑tolerant NCM ternary cathode material, paired with a high‑conductivity, low‑temperature‑stable electrolyte, laying the foundation for exceptional low‑temperature performance and high‑rate capability. Manufacturing utilizes precision electrode coating and laser welding processes, while vacuum filling ensures superior sealing. Each unit undergoes 100% full inspection and passes rigorous low‑temperature and safety tests. Its core advantages lie in balancing outstanding low‑temperature performance with high‑rate discharge: it maintains stable, high‑current output even at −40°C, retains over 80% of its initial capacity after 500 cycles, and weighs no more than 69.0 g, making it compatible with 21700‑size devices. Applications span low‑temperature, high‑power power tools, outdoor energy storage, cold‑chain equipment, and more. Customized PACK solutions are available, supporting entry into overseas high‑end low‑temperature markets.