Deye SE-G5.1 PRO B

The SE-G5.1 Pro-B is a 5.12 kWh LiFePO4 battery system designed for residential and light commercial energy storage. It features a 100 Ah capacity with a nominal voltage of 51.2 V and operates across -20°C to 55°C with natural cooling and high discharge capability.

The system uses cobalt-free LiFePO4 chemistry with an intelligent Battery Management System (BMS) and IP20 protection for safety and durability. Its modular design allows expansion up to 64 parallel units for a maximum capacity of 327 kWh, supporting both single-unit residential setups and small commercial deployments.

Key features include auto-battery networking, remote monitoring, USB firmware updates, and an ultra-thin modular form factor measuring 440 × 133 × 540 mm with an approximate weight of 45 kg.