Multiform

I also bought from them in December. They still owed me some paperwork which never arrived despite some promises, and most recently I have been unable to reach them on any communication channel.

I'm very happy with my setup using Solar Assistant for effortless communication with my newly installed Deye 8kw Inverter with my pre-existing Home Assistant Setup. I bought the preinstalled Pi from Solar Assistant with a cable and a DC power supply, and got it running within 10m, with another 30m to get the MQTT integration working following the Solar Assistant guys documentation. It exposes 76 sensors and switches over MQTT which thus far does everything I easy automations. I calibrated the Grid usage kWh meter from Solar Assistant with my Prepaid electricity meter, and I can keep track of my remaining prepaid credit. Various automations set up to switch off high load appliances when the battery power is getting low, and I've integrated the EskomsePush API data feed to automate around loadshedding events. The solar panels are only going up this week - but I look forward to be able automatically minimize my grid electricity purchases by balancing my battery SoC with load shedding schedule and weather forecast stats that would allow me to always have power at the lowest cost.

Hand-me down 600w rebranded Must EP20-0612 PRO (sold locally rebranded as Synapse or RT) connected to a Mecer 12V 200Ah SOL-B-L-M200 purchased from the super-helpful loadshedbuddy.co.za. When the battery is nearing fully charged, the little inverter goes haywire, with the voltage reading fluctuating randomly between 10V and 40V, with the alarm LED blinking until it would eventually stop with alarm code 45 - AVR Fault. After setting the following to the minimum values available in UPS menu options - the voltage reading fluctuates for a while when battery reaches 13.6V - but then it eventually stops charging and UPS shows normal. Bulk current: 5A Absorption Charge: 13.8 V (minimum) Float Charge V: 13.5V (minimum) Shutdown voltage: 10.8V (as per battery sticker) Setting the absorption charge higher invokes the AVR Fault Alarm condition. My guess is that the BMS and UPS charge controller are fighting each other once the BMS starts to limit charging current. I'm remotely supporting the installation with a very non-technical user, and it will be a while before I can confirm readings with a multimeter. I'd very much appreciate any theories on the reason for the fluctuating voltage readings and the AVR Fault alarm condition on the UPS. Buying the battery was a massive investment for the user, and buying a different inverter to use with the battery isn't an option ...