Checking the technical condition of an energy storage device made of lithium-iron-phosphate cells supervised by a passive BMS system

Abstract

Pandemics, wars, restrictions and restrictions can disrupt supply chains and make trade between countries and even continents difficult. This situation caused that energy storage devices which were not prepared for operation to be stored for several years. Even an unused energy storage device loses its capacity. The article presents and discusses the results of testing the 400 Ah energy storage device focusing on checking how the parameters such as voltage, current and temperature affect the capacity of cells after a long period of non-use. This type of tests can provide valuable information on the maintenance and optimal storage of energy storage devices.