jbroo

Thanks @Coulomb I think the resistors you speak of must be intermittent or toast. Pity, the machine is less than a year old. I tried last night/this morning, leaving the batteries to drain: PSDF (ACK PBATH2648 (ACK PBATL2256 (ACK CF11 (ACK PBF2244 (ACK PSAVE Sadly, the result is still way out: QPIGS (225.0 49.9 225.0 49.9 2460 2459 102 423 26.86 000 100 0031 0000 000.0 24.75 00000 10010101 00 03 00000 100

Hello all. At some point my inverter decided to de-calibrate itself, so now it is wildly over-reading the voltage, and consequently not charging the batteries. I've played ad nauseum with the PBATH and PBATL command pair, and have established I can pretty reliably set the battery voltage on the SCC, however this doesn't come into play - I don't have solar and this reading does not seem to influence the inverter's actual perception of the battery SOC. Instead, it uses the "battery voltage" reading, which I cannot for the life of me seem to set in any way. For example, these commands reliably set the SCC voltage (even when using the same voltage reading): PBATH2458 (ACK PBATL2458 (ACK PSAVE (ACK This results in the following: Battery voltage 28,71V Battery voltage SCC 24,58V QPIGS result: (228.0 50.0 228.0 50.0 0374 0338 014 418 28.71 000 100 0027 0000 000.0 24.56 00000 10010000 00 03 00000 000 Note the correct SCC voltage set above, and the wildly incorrect "battery voltage". I've done this over and over in various permutations, with/without PMID, with/without a power off and on, with/without CF11/PBFnnnn, and so on. I've figured out how to set the SCC voltage accurately repeatedly, but the other voltage just does not correlate, ever. It's gone as high as 30+V, and as low as 24, with no relation to the actual battery voltage as measured by a multimeter, nor any relation to the value displayed for SCC voltage. Any ideas here would be greatly appreciated. I'm sitting with flat batteries that won't charge until this stupid thing actually knows they are flat. @Coulomb maybe you have some suggestions?

I paid 15.5k last year to install my solarless backup solution. 3kva inverter with 2 x 200Ah LFPs. Price included all materials, steel battery box and COC. For proper work, this seems to be the going rate.

I just saw version 1.18 was released here. Tested and working well. Pity this is only Windows based.

Zerotier works great for me.

And finally maybe this: https://za.rs-online.com/web/p/power-conditioners/7079851

Also this: https://za.rs-online.com/web/p/power-conditioners/7079839 The current draw/passhrough limitation is likely to be an issue however.

Generally used in audio and music studio contexts, but a power conditioner may do the trick: https://www.furmanpower.com/stable-power-regulation/ https://www.furmanpower.com/220-240-volt-region-pro-av-commercial/

Nice to see some familiar software there I also run Pihole on the same Pi to keep my network clean. Why not add Zerotier, then you can use your Pi as your DNS server wherever you are (and access your LAN remotely)?

Thanks. I had tried the Grafana route but also found it tedious and complicated to get working. I settled on Highcharts since it basically runs itself. The end user needs to do minimal configuration, which was part of my goal.

Version 1.1.0 now available.

So, after various DIY attempts to monitor my Axpert inverter, I settled on using SolPipLog, which is great for monitoring live data via MQTT, using a Raspberry Pi. I use that in conjunction with the HomeHabit app on my Android device. It allows me to monitor various inverter stats in real time, and also to control some functions (such as charge profile, equalization on demand, etc.). However, the one thing that neither SolPipLog or HomeHabit offer is historical data via graphs/charts. Although SolPipLog does export to EMONCMS, this is no longer free and setting up a self-hosted instance is quite painful. I really wanted to have some sort of historical data available, so I could see trends (or check why the fans are running - did we have load shedding or is it just hot? ). This prompted me to write my own software, which logs the MQTT topic data to a SQLite database, and fetches it into a Highcharts graph on demand. I got it working but got a lot more involved than I expected, so the end result is MQTT DB Logger Grapher, which is reasonably customizable, and while it's developed for inverter and power monitoring, it can be configured to log and graph any MQTT data. Feel free to download and use with SolPipLog or any other MQTT device monitoring software. Desktop web view: Mobile web widget in HomeHabit:

Yup. QPIRI also has nothing, nor do other commands. So here I noticed when I bumped up my bulk charge V to 28.8 from 28.4, it cut out at a higher point (27.84 vs 27.5ish). But the drop after is very quick - no lingering at absorb.

@jumper are you running LFP batteries? Edit: stupid question. Of course you are.

Quite correct, yes, thanks. That then begs the question, why are we all so desperate to charge at 14.4V and higher? Image source