As temperatures plummet, electric vehicle (EV) owners often face a frustrating issue: lithium battery range reduction. Cold weather diminishes battery activity, leading to sudden power cuts and shortened mileage—especially in northern regions. Fortunately, with proper maintenance and a reliable Battery Management System (BMS), these problems can be effectively mitigated. Below are proven tips to protect lithium batteries and maintain performance this winter.
First, adopt slow charging currents. Low temperatures slow down ion movement inside lithium batteries. Using high currents (1C or higher) as in summer results in unabsorbed energy turning into heat, which risks battery swelling and degradation. Experts recommend charging at 0.3C-0.5C in winter—this allows ions to embed gently into electrodes, ensuring full charging and minimizing wear. A quality Battery Management System (BMS) monitors charging current in real-time to prevent overloads.
Third, limit the depth of discharge (DOD) to 80%. Fully discharging lithium batteries in winter (100% DOD) causes irreversible internal damage, leading to "virtual power" issues. Stopping discharge when 20% power remains keeps the battery in a high-activity range, stabilizing mileage. A reliable BMS helps effortlessly control DOD through its discharge protection function.
A high-quality Battery Management System (BMS) is indispensable for winter battery health. Its advanced features, including real-time parameter monitoring and intelligent protection, safeguard batteries from improper charging and discharging. By following these tips and leveraging a reliable BMS, EV owners can keep their lithium batteries performing well throughout the winter.
Post time: Nov-15-2025
