SPH 3000-6000TL BL-UP New Generation Hybrid Storage Inverter Product Introduction

Hi Amos,
I recently acquired three growatt sph5000tl bl-up inverters and two sets per inverter of 4.8kWh LiFePo4 batteries. The system was connected but the inverter doesn’t go out of standby mode. We tried to use a set of 4 12V100Ah lead-acid batteries but the inverter indicates bat overload. Any advice will be greatly appreciated on how we can make these inverters work.