The Firman 15kWh Lithium Battery (Model B / Mega Wall) is a high-capacity 51.2V 280Ah LiFePO4 energy storage system. It features Grade A cells, a 6,000-cycle lifespan, a smart Battery Management System (BMS), and parallel expansion up to 6 sets. It weighs roughly 130kg and delivers reliable residential or commercial solar backup. [1, 2, 3, 4, 5]
Key Features
LiFePO4 Chemistry: Uses safe, stable Lithium Iron Phosphate technology for deep discharge and long-term thermal stability.
Long Cycle Life: Rated for over 6,000 charge and discharge cycles, giving an estimated 10 to 15 years of operational lifespan.
Smart BMS: Built-in protection against overcharging, over-discharging, short circuits, and high temperatures.
Scalable Design: Supports parallel connection for expanded total capacity needs. [1, 2, 3, 4]