The SURBC2030 Internal Battery Pack is a set of two pre-wired strings of internal batteries that are designed to be installed within the internal battery compartment of a Tripp Lite SmartOnline 20kVA or 30kVA 3-Phase UPS System or SUBF2030 External Battery Frame. When installed as directed, the two assembled battery strings that make up a SURBC2030 maintain a nominal battery voltage of 240V DC. The SURBC2030 also serves as a replacement for existing battery packs.