Marstek Modbus templates

Marstek builds residential plug-and-play battery storage systems for households already running a PV inverter. The templates here cover the Venus A, Venus C, Venus D, Venus E (Gen 2.0 and Gen 3.0) and the Jupiter C Plus product lines, each split into battery and PV register groups where applicable. These units typically sit as a secondary storage layer alongside an existing inverter, soaking up surplus PV and discharging it in the evening, which is exactly the profile the Marstek templates are aligned to.

ModbusCloud reads your Marstek battery over Modbus and surfaces the measurements that matter for a storage-only product: battery state of charge, charge and discharge power, PV power flowing into the unit on the Jupiter C Plus, and system status. Because each Marstek model has its own template with correct register addresses and scaling, installers don't have to guess which Venus generation is on site before commissioning. Alerts trigger on stuck SOC, charge power dropping to zero mid-day, or loss of communication with the Marstek controller.

All 10 Marstek templates are free to browse. Import the one that matches your unit into your ModbusCloud portal and read live data within minutes — no register mapping, no manufacturer PDFs.