Avoid, no proper warranty. No active balancing
Bought a 51.2V 300Ah (15.36 kWh) LiFePO4 battery in April 2024 First problems appeared within months — random SOC drops with no load. Raised a warranty claim in October 2024. Support suggested a firmware update and then went quiet. By May 2026 the battery had properly failed: severe cell imbalance, won’t hold charge, shuts down after a few minutes so the inverter loses it. BMS interface is ugly and there is zero active balancing. Opened the formal case 19 May 2026. Sent over 30 emails. Most replies were late, incomplete, or simply repeated the same requests for data and software screenshots. PC software never connected properly (only Bluetooth worked). Offered TeamViewer. Asked repeatedly for a replacement or return address. Three months later — still nothing. No resolution, no replacement, no clear next step. Two years of ownership, two separate warranty issues, zero proper support. Will never buy from them again and strongly advise others to avoid.