The Battery Interface Box (BIB) is a device capable to connect and disconnect a battery or a battery bank to a load / charger (DC bus) with the intent to protect the Li-ion battery or battery bank against improper use. The BIB communicates with the battery’s BMS (Battery management system) to request to the batteries if they are operable and used within their limits. The BIB is available in various variants: 12V350A, 24V350A, 48V350A, 12V600A, 24V600A and 48V600A.