The Deye SE-G5.1 Pro-B is a 5.12 kWh lithium iron phosphate (LiFePO4) battery designed for 48V (nominal 51.2V) residential and commercial solar energy storage systems. It features a safe, cobalt-free LFP chemistry with an intelligent built-in BMS that monitors voltage, current, and temperature while balancing cells for enhanced safety and longevity.
With a recommended 90% depth of discharge and over 6,000 cycles at 80-90% DoD, it offers excellent lifespan and reliability, supporting a maximum of 64 units in parallel for scalable capacity up to 327 kWh.
The compact, modular unit weighs about 45 kg, measures 440 x 133 x 540 mm, and supports flexible installation via rack, wall, or floor mounting. It provides recommended charge/discharge currents of 50A (max 100A, peak 150A) and operates in a wide temperature range with natural cooling.