Zhejiang Changyi NaCY50160118-75Ah Sodium-Ion Battery Specs

This document provides the product specification for the cylindrical sodium-ion rechargeable cell model NaCY50160118-75Ah manufactured by Zhejiang Changyi Na Electric Energy Storage Co., Ltd. The battery has a nominal voltage of 3.0V and a nominal capacity of 75Ah at 0.33C discharge. Key specifications include a charge cutoff voltage of 3.9V, maximum continuous charge current of 1C (75A), and maximum continuous discharge current of 3C (225A). The operating temperature range is 0 to 55°C for charging and -40 to 60°C for discharging. The cell weight is ≤1.9kg, and dimensions are 118±0.6mm height, 50.5±0.5mm thickness, and 160.3±0.5mm width. Electrical characteristics include 1.0C discharge capacity ≥95% of standard, cycle life ≥3000 cycles at 100% DOD, and temperature-dependent discharge capacities of 75Ah at 45°C, 75Ah at 25°C, 67Ah at -20°C, and 57Ah at -40°C. High-temperature capacity retention is ≥85% with recovery ≥90%, and room-temperature retention is specified for 28 days.