WM4 51.2V 200Ah 10.24kWh Wall-Mounted LiFePO4 Battery

The 1stess WM4 is a 51.2V 200Ah wall-mounted LiFePO4 battery delivering 10.24kWh of rated energy for residential solar energy storage, off-grid solar systems and small-business backup projects. The touchscreen-equipped configuration shown combines a metal enclosure, recessed DC terminals, folding metal handles and accessible communication interfaces.

A built-in BMS provides overcharge, over-discharge and short-circuit protection. CAN, RS485A, RS485B, RS232 and dry contact interfaces support system integration. Confirm the inverter model, communication protocol and firmware compatibility before selecting this solar storage battery for a hybrid inverter or off-grid inverter project.

The output voltage range is 43.2–58.4V, with a charging voltage of 57.6–58.4V. Maximum charging and discharging current are both 100A; the recommended charging current is 50A. The supplied specification lists more than 6,000 cycles at 0.2C, 25°C and 80% depth of discharge.

Up to 16 units can be connected in parallel, subject to system configuration and inverter/BMS compatibility. A 51.2V 100Ah 5.12kWh version is also available. Bluetooth, Wi-Fi and OEM options are configuration-dependent and should be specified at quotation.

For solar battery importers, distributors, EPC contractors and procurement teams, request the WM4 datasheet, approved inverter protocol list, connection requirements and project quotation. Share your target storage capacity, inverter model, installation location and order quantity for technical selection.

• High-capacity storage: 51.2V 200Ah configuration with 10.24kWh rated energy for residential and small-business backup.
• Integrated BMS protection: Overcharge, over-discharge and short-circuit safeguards built in.
• Flexible communication: CAN, RS485A, RS485B, RS232 and dry contact interfaces for inverter and system integration.
• Long cycle life: More than 6,000 cycles at 0.2C, 25°C and 80% DOD under supplied conditions.
• Scalable parallel expansion: Supports up to 16 parallel units, subject to system and inverter/BMS compatibility.
• Wall-mounted metal enclosure: Recessed DC terminals, folding metal handles and touchscreen operation.
• Optional connectivity: Bluetooth, Wi-Fi and OEM configurations available on request.

Specifications reflect the supplied product feature sheet. Confirm final configuration, communication protocol and firmware compatibility with 1stess before ordering.