Battery cabinets are enclosed, safer, and easier to place near UPS equipment; battery racks are open, flexible for large systems, and often used in dedicated battery rooms. Space plays a crucial role, especially in environments with limited room. Cooling and ventilation. Battery rack cabinets are secure, organized, and often climate-controlled enclosures designed to safely store, protect, and charge multiple batteries, especially lithium. Concerning maintenance, the. Both have pros and cons. Valve-regulated lead-acid (VRLA) batteries. Open rack batteries expose potentially lethal voltage to any person coming in contact with them. Therefore they must be installed in battery rooms in which room access is restricted to authorized personnel only. Authorized personnel must be trained in battery safety.