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  1. meetyg

    Has anyone tried to use SRNE (Modbus ?) communication protocol with MakeskyBlue, PowMR or EASUN SCCs ?

    Same here with an SRNE HF2430S60-100 AIO inverter. In iPower you need to enter the password to change settings. I found that 111111 works. For reference, here is my post regarding the issue. My main issue is changing settings via SolarAssistant, but iPower didn't change settings either, untill...
  2. meetyg

    SolarAssistant not changing Growatt SPH configuration

    Just for reference, I'm having a similar problem with an SRNE AIO and SolarAssistant. SA support weren't much of help. https://diysolarforum.com/threads/anyone-having-trouble-changing-srne-inverter-settings-via-solarassistant-needs-password.85362/
  3. meetyg

    Anyone having trouble changing (SRNE) inverter settings via SolarAssistant? Needs password ?

    Hi all. I have been using SolarAssistant successfully with my MUST inverter for about a year now. But recently I got an SRNE HF2430S60-100 24V 3K AIO inverter for my dad. I hooked it up to a new Raspberry Pi4, via USB cable, installed SA and started to see the data. However, most settings...
  4. meetyg

    Beware of Amazon's class t fuses

    Finally, an affordable class T fuse ? I'm used to seeing these at double the price. Of course we don't know much about the quality, but specs seem to good. I just might be tempted to replace my MBRF fuses. Although I like the bolt-on style of the MBRF fuse holders. Keeping the fuse as close as...
  5. meetyg

    Panels in PV produce the same output

    How are you testing the output wattage? Maybe your Y splitter if faulty?
  6. meetyg

    Panels in PV produce the same output

    But either way, total wattage should add up.
  7. meetyg

    Is using a 24v to 13.8v converter to maintaing an agm stop start battery a bad idea?

    If you do this, at least get a constant current 24v to 13.8v DC-DC converter (also called step-down or buck converter). The reason is that when cranking, the alternator will pull alot of amps and some of load may be pulled from the converter, possibly more than it's rated for. If you get a...
  8. meetyg

    Can you plug a power station into a wall to help power your home?

    I really don't understand how Germany allows this. I mean it's a great idea and if every balcony had some solar, that would reduce grid usage and save the planet from lots of pollution. But, it seems that they are counting on these systems to be fairly small, and are relying on the headroom in...
  9. meetyg

    Can you plug a power station into a wall to help power your home?

    The problem with plugging in to a socket and injecting power, is that you are somewhat bypassing over current protection breakers, and risk damage to house wiring should an appliance short-circuit or simply take too much current. I think an example will help explain: Let's say you have a 20 amp...
  10. meetyg

    Can you plug a power station into a wall to help power your home?

    Basically yes, but doing so violates some codes and regulations I suppose. Your really not supposed to inject power through sockets, rather have a proper connection in your mains distribution panel. One thing these kind of microinverters violate is what's called "branch rules". Have a look at...
  11. meetyg

    JK BMS - Discharge Short Circuit Protection

    OK, so I was referring to the MPP/Voltronic style inverters with a small ON/OFF switch, not a breaker. Thanks for the clarification.
  12. meetyg

    JK BMS - Discharge Short Circuit Protection

    No, OFF! The capacitors are usually directly connected to the battery terminals. No high current flows in the On/Off switch. It's just a switch for the controller boards in the unit. Of you leave inverter on, you will charge the capacitors slower, or maybe the inrush will be even bigger...
  13. meetyg

    MPP LV2424 and Pure Sine Wave

    The MPP is an all-in-one, which includes an AC battery charger, MPPT solar charge controller and a pure sine wave inverter. So no, you don't need an additonal inverter.
  14. meetyg

    DC - and Ground

    It really depends on your equipment. Some inverters don't like that, and it could cause problems. To tell the truth, I still don't understand why some ground thier battery (or PV) negative. Seems to cause more problems than good.
  15. meetyg

    Can you plug a power station into a wall to help power your home?

    They call that cord a "suicide cord" for a reason... No, you certainly cannot connect a power station to feed your home along with the grid. The reason it worked for that guy is because he used a microinverter that syncs to the grid. Portable power stations do not sync with the grid. They are...
  16. meetyg

    Please suggest a hybrid inverter that works on PV and grid together

    No, unfortunately no CT coils in the MUST inverter. As I mentioned, the logic is pretty basic: Export up to X watts if battery is above Y volts.
  17. meetyg

    Please suggest a hybrid inverter that works on PV and grid together

    Actually, my MUST PH18-PLUS hybrid can do that, but not perfectly. It has the ability to export to grid, so it's a true hybrid. This also allows it to power loads blended by grid power and PV or battery power. But, this only works if you limit the inverter discharge amperage. So say you allow it...
  18. meetyg

    Y and h hybrid with changer over no voltage

    A picture would help...
  19. meetyg

    Proper cutoff/fuse for Solar Panels to MPPT in a van

    The one on the left should have both short-circuit protection (fast acting) and overcurrent protection (slow acting). This is done by two mechanisms internally: One is a magnetic coil (for the short circuit protection) and the other is thermal (for overcurrent). The one on the right is only...
  20. meetyg

    srne all in one questions

    I know this thread is a bit dated, but I think it's not possible. The strange thing is, that if you power up the inverter when solar is connected (during daylight) and then turn it off, it continues charging via solar. But, then at nighttime, it completely shuts off and then you need to power...
  21. meetyg

    Looking for a 24v all in one inverter

    I forget to mention another valuable feature of the SRNE: It has internal N-G bonding when in battery/solar mode! (edited original post to add that...) This saves alot if hassle if you want to use an RCD on the output, or simply dont want the output to be floating. My MUST doesn't have that...
  22. meetyg

    Looking for a 24v all in one inverter

    Thanks. I'm using 4 AWG Silicone insulated wire (rated to 200° C) all round (including BMS to battery). During that high load test, the battery was pumping out around 100amps. From various sources online, it seems that 4 AWG Silicone insulated wire should be able to handle that and a bit more...
  23. meetyg

    Looking for a 24v all in one inverter

    I recently bought an SRNE HF2430s60-100, very similar to the U models, but in 230v single phase (European). I'm building a semi-portable solar generator for my dad, mainly for backup purposes. I am still doing some testing, but I think it's a nice compact and capable unit. Things I like/dislike...
  24. meetyg

    Going slightly over the max MPPT voltage

    You could put a solar diode in series with your string. Depending on the diode type, there is a 0.2v-0.6v voltage drop. But still you would be on the edge. Personally, I would go for the 150v, since we all have the tendency to want more (expansion) in the future. Depending on the single panel...
  25. meetyg

    Help Us Develop Solar Assistant App for LaMetric Time!

    I see... I currently don't have an MQTT broker setup, so sorry, can't help.
  26. meetyg

    I asked chatgpt to design a battery

    As if no other BMS exists other than the pricey Batrium. What a scam this ChatGPT is! That's why I refuse to use it!
  27. meetyg

    MPP solar not accurately detecting appliance

    Which model do you have and how much solar are you planning? Most MPPT solar charge controllers can be over-paneled, as long as you don't exceed maximum voltage on the PV input. As for current, the SCC will pull whatever it can (up to its maximum current) for the solar panels. So it's safe to...
  28. meetyg

    MPP solar not accurately detecting appliance

    This is a strong indication that the cells are unbalanced. Probably one cell is at a higher SOC and therefore reaching its voltage limit (BMS will block charging at this point), while others are lagging behind. I suggest you charge to 14v, but with very little current/amperage. This should allow...
  29. meetyg

    MPP solar not accurately detecting appliance

    As you mentioned your mini split is 12v, that means its a DC load directly connected to the battery, I assume. If so, the inverter cannot measure that, as it's not an AC load that is provided by the inverter. Your kettle is probably powered by AC coming out of the inverter, so it's able to...
  30. meetyg

    Help Us Develop Solar Assistant App for LaMetric Time!

    So you have an MQTT broker and just want us to publish the data? How can we make sure inverter settings are not changed via MQTT? SolarAssistant allows changing values via MQTT.
  31. meetyg

    GFCI outlet with N/G bonded(just kidding) MPP Solar all-in-one inverter on battery power questions.

    That's how I solved the N-G bonding issue on my AIO: Normally Closed relay/contactor, powered by grid (open). Works fine. I do have some worries about the lifetime of the contactor (coil powered most of the time, except for power outages). But I got some spares, just in case one would fail. It...
  32. meetyg

    Breaker vs Battery disconnect switch

    This specific model has an "economizer", which draws less power after initial contact is made. I don't think it affects the disconnect strength. Also, they claim it protects from back EMF: I think it's a great product, got some myself, but used them sporadically.
  33. meetyg

    JK Inverter BMS "Discharging MOS Not Normal" Huge virtual discharge currents!

    Can you check with a clamp meter, to make sure no current is actually flowing in/out the battery? Can you take a picture of your connections?
  34. meetyg

    Breaker vs Battery disconnect switch

    AFAIK, the contactors in EVs do not normally switch under high load. They switch on when you power the car, and switch off when your parked and turn off the car. The current during these actions isn't supposed to be significant (especially because it's high voltage). Of course they need to...
  35. meetyg

    Breaker vs Battery disconnect switch

    I don't know if it's wise to disconnect using a relay/contactor while under load. If you must do this under load, you should use a proper DC breaker with an arc chute, that will pull the arc away from the contacts while the power is being broken. Higher voltages have a longer arc, so it may be...
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