greenMeter

This new battery monitor was developed to precisely measure currents. After over two years of development, we are proud to have achieved a measurement error of less than 0.04%.

In off-grid power systems, the challenge often arises that relatively high currents need to be measured, while also dealing with very small standby loads. These loads are present 24/7, and they play a crucial role in accurately measuring the battery charge state. Accurate measurements are also important to detect and prevent "leakage currents".

More accurate sensors often have a higher voltage drop, leading to more losses. The reason for this is that larger voltages across the shunt can be better measured. However, we were able to keep the resistance very small. You can find the data in the table. Therefore, the losses are typically smaller than those caused by a fuse.

GreenMeter can precisely measure battery current in both directions (bidirectional). Additionally, it can measure the battery voltage via two sense wires. With the internal amp-hour counter, the SOC (State of Charge) can be accurately determined. With two relay outputs, the load or charge can be disconnected in case of high current or extreme temperature conditions. GreenMeter can be integrated into most systems in the positive lead. If you want to separately measure charge and load currents, you can also integrate multiple greenSwitch devices into the system. It is also possible to specifically measure individual consumers. Up to 247 devices can be connected via the bus.

The following displays and apps are currently compatible:

• greenView (Color TFT Display with Touch)
• greenViewM (ECS App for Android via Wifi Converter)
• ECS Kommtool (PC / Notebook Software via Wifi, USB)
• greenView Desktop (PC / Notebook Software for connecting to greenView via TCP-IP Network)
• Third-party software thanks to open standard protocol (Modbus RTU)