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Sigenergy SigenStack BC M2-0.5C-BST (11140003) is the battery controller for the SigenStack C&I storage system. It connects SigenStack BAT 12.0 modules to Sigen PV HYA/HYB inverters.
Nominal battery charge/discharge current: 157A | Max. inverter input/output current: 180A
Operating voltage range: 550–1100V | Communication: CAN
Dimensions: 77.0 x 24.8 x 36.3 cm | Weight: 60 kg
BST version — universally applicable, including in PV-connected systems.