Sigenergy SigenStack Battery Controller 0.5C with BOOST
BST stands for ‘boost’. A SigenStack BC with the ‘BST’ suffix can boost the battery voltage to the inverter's start-up voltage. If there is no PV and fewer than 19 batteries in the system, SigenStack BC M2-0.5/1C-BST is essential. For systems with PV, SigenStack BC M2-0.5/1C-BST is always essential.

