BMU801 is a smart battery management unit for charging and monitoring batteries. By default, it supports one or two 2.6, 7, 21, or 26 (±10 %) Ah 12 V valve‑regulated lead‑acid (VRLA) batteries configured using a rotary switch. There are 2 battery connectors, which enables full battery status identification for both batteries.
BMU801 also has a Modbus communication interface for additional parameter settings. With Modbus interface you can select the battery chemistry and size more accurately and even control other charging parameters.
Together with a commercial AC/DC power supply unit and/or solar panels, BMU801 makes a modular uninterruptible power supply (UPS). In case the input power to the system fails, BMU801 automatically switches to the backup battery and continues feeding power without any interruptions on the output line.