We are comfortable and confident that all the vendors’ products we offer are safe, when used with our UPS, installed per the manufacturer’s recommendations, and when their environmental requirements are observed The battery management system (BMS) is one component which ensures the safe operation of the battery, by monitoring temperature, voltage balance, etc., and it has the ability to disconnect the battery string if conditions warrant. The other component is the design of the battery cells and battery modules. All of our vendors comply with UL1642 (Battery cell safety); UL1973 (Battery module/cabinet safety). The BMS complies with UL1973 which pulls in UL991 and UL1998 (Software safety) as appropriate
