4000mAh 21700-40T high-rate power lithium battery
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.
Keywords:
The 21700‑40T is a high‑end, high‑rate battery cell based on an NCM/NCA ternary chemistry. Its key selling points are a large 4,000 mAh capacity and an ultra‑high discharge rate of 50 A, coupled with a stable 3.6 V voltage, a low internal resistance of 9.5 mΩ, and 8 A charging. It is ideally suited for high‑performance power tools, racing drones, and other demanding applications. The cell employs a high‑purity, high‑nickel NCM ternary cathode material, paired with a high‑conductivity electrolyte and premium current collectors, achieving an exceptional balance between energy density and rate capability. Production utilizes advanced precision manufacturing processes, with end‑to‑end digital process control, 100% full inspection, and compliance with multiple rigorous safety tests to ensure reliable operation under extreme conditions. Its core advantages lie in its combination of exceptionally high capacity and ultra‑high rate performance, with a capacity retention of over 80% after 500 cycles. Weighing no more than 69.0 g, it fits the 21700 form factor and is compatible with high‑end devices. Applications span premium power tools, drones, and high‑end energy storage systems, with support for customized solutions to facilitate market penetration in overseas high‑end segments.
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