When working on the energy storage system, first turn off the charging controller, then the battery, and ensure that they are not turned on again Improper use of the battery energy storage system can lead to death. . Energy storage at high voltage normally requires the use of electrolytic capacitors for which th ESR varies considerably, particularly over temperature. These variables need to be conside. What is high voltage energy storage (hves)? high-voltage-energy storage (HVES) stores the energy ona capacitor. . WARNING: Connecting the NV14 Energy Storage System to the electric utility grid must only be done after receiving prior approval from the utility company and installation completed only by qualified personnel/licensed electrician(s). Please carefully read this manual of LES-HV-4K F1 Installation, preliminary debugging, and maintenance must be carried out by qualified and authorized engineer. In order to provide the best customer experience, contents of the manual may be updated and amended continuously, so it is possible that there may be some errors or slight incon istency with the actual product. This document serves only as a guide, in which only the basic requirements are. .