André3000

Thank you everyone I guess that I always knew that there are losses in the system, I just did not think that the losses could be that large. I was also surprised to see that the losses are not constant, but that it varies throughout the day. Even though I am not ecstatic about the losses I am happy that it is to be expected and that there is nothing wrong with the system. I am moving in the near future and I'm in the process of shopping around for components for my next system. I will now add the losses on inverters as a criteria when considering the inverters I buy for that system. I'm currently looking at the 8kW Sunsynk/Deye inverters for my next installation. May I be so cheeky to ask the audience on their opinions on the Sunsynk vs the Deye vs similarly priced inverters?

Thank you HendrikBigChief The electricity loss/leak occurs while the batteries are charging in the day. So if you look at the first picture you will see that the panels are generating 7811 Watts while the load is 5236 Watts. That should leave 2575 Watts for charging the batteries. The batteries are however only receiving 1671 Watts, which means that the remaining 904 Watts "disappears". I suppose it could be inverter consumption would go a long way in explaining the difference. At 904 Watts between the 2 Axperts we get pretty close to your 400W per inverter. However, this spread opens pretty wide in the morning, making 1800 Watts disappear into the ether. This is the time during which the inverters and batteries are heating up with the charging cycle, so I suppose that could also play a role. I will keep a closer eye on the relationship between the temperatures on the inverters and batteries and the efficiency of the inverters at channelling that electricity into the batteries and or the load. Thanks again for the insights. I'm just happy to hear that I am not about to burn my house down 😅

Hi everyone. This is my first post, so I hope it is made on the correct section. I was able to install my own solar system by trawling the Power Forum, so I want to start by saying thank you to all the contributors to this forum. I installed my system in August of 2021, so it is almost 2 years old now. It consists of 2 Axpert Kings (5kW each), 5 Pylontech batteries (US3000C) and roughly 12kW of Jinko Solar panels. It is a grid tied system, but without the ability to push electricity back into the grid. The system supplies all our needs and I only need to get electricity from the utility 2% of the time during days of heavy cloud cover and rain. My observation: I have the ICC system installed on a Raspberry Pi and I've recently noticed that my system is "leaking electricity". The "leak starts at roughly 2kW in the morning and reduces to under 1kW later in the day. The figures on the battery charging/discharging are also corroborated by the additional Victron BMS I have installed. My questions: Is this normal or to be expected? If not, where should I start my fault finding process? Thank you, André.