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Vassen last won the day on September 28

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  1. I went to the local AC/DC express and they didn’t have in stock but were able to order for me. It should be there today.
  2. Yip. It seems normal. Lights also going off for a while when not in use is also normal. However, when you spend 20k a pop for these things, the slightest of changes makes us want to freak out. I’ve just let mine be for now, it does what it needs to when I need it to so it fine. Having a sunsynk inverter connecting to the bms makes everything simple to configure for me.
  3. I’m not familiar with the Axperts but can you may check what happens when you charge from grid and keep it for a while. Or rather charge each separately from grid till it’s full and then connect together. A difference of 5 weeks cannot result in such serious issues. Perhaps it just needs time to balance itself.
  4. Have you tried fully charging each battery separately before joining them together and are you wiring them with positive on 1 battery and negative on the other. I have read that newest battery should also be the master. How are you charging them? Using CAN or RS485. With my US3000, I notice that it gets stuck on 88% soc for some time and then very quickly goes to 100%.
  5. I’ve seen my evacuated tube system get to 82 degrees over recent days when measuring using the sonoff. The top of the geyser is probably some degrees warmer. I haven’t noticed any overflow. After replacing the element with a 2kw one, I’ve been heating the geyser to 80 degrees but it’s difficult to see how the stratification affects the water within. The element is really tiny and sits on one side of a fairly large tank. In my opinion, vertical mount geysers make more sense in storing hot water with the element being at the bottom.
  6. If you use the solarman smart app, you can see the generation on each mppt by going to device and statistics. Maybe this is available from the inverter display as well. I have the sunsynk and am not familiar with the deye GUI. you should check how each mppt is performing.
  7. As long as both cables are the same lengths and diameter it should be fine to parallel them. If they are not the same, then the resistance of each cable will be different which means the current on each will also differ which creates issues
  8. There are various supporting factors that need to be considered before you can determine any efficiencies. Without really knowing what this system actually does and how they calculate it here are my thoughts 1. It depends on what type of inverter you have. Off-grid that can’t blend vs off grid that can blend / hybrid vs grid tied. 2. Your PV array size and panel orientation 3. your load demand during the hours your PV is generating 4. whether you can feed back into the grid or not and wether it’s just spinning the meter backwards or feeding at a reduced rate. P
  9. No. The max charge and discharge is actually twice that at 74A. The peak charge / discharge is 100A for 15 seconds. They don’t really specify the lowest but I have read other research where some says lower charging is better while others say lower charging has no benefit in extending the life of batteries. Some claim no difference between fast charging and slow charging because of the way the particles actually charge within the battery as long as the temperature is maintained. I would stick to the manufactures recommended charge rate as far as possible as at the end o
  10. Okay cool thanks. There’s a acdc express close to me. Will check if the have stock.
  11. Thanks. R&D are apparently looking at my issue now.
  12. Hi Justin. Are you using that with the sunsynk? That’s a 12V DC coil relay. this is what I’m using.
  13. Oh damn. I was supposed to test it with the boiling water but forgot. Will do when I remove again to change the element. Just wanted to make sure it still works after cutting and joining. Or I could just wait for your confirmation. It looks like the cutoff has its own sensor Inside the terminal block. There’s no other connection to external sensors. It would anyway be a bit stupid for them to do it any other way.
  14. Just an update. Managed to install the sonoff sensor into the geyserwise pocket. I cut the cable, fed through the geyserwise pocket and soldered, and used heat shrink over the join. It seems to be working fine afterwards. Will hopefully swap the element tomorrow and then need to a relay or contactor and a bigger enclosure.
  15. I think the ohm is a rebranded deye inverter which is also similar to the sunsynk. I have a sunsynk and am happy with it.
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