August 25, 20232 yr Hi all, My Sunsynk shows that the AM-5 constantly draws ~1 A (~50 W) even after it is supposedly fully charged. I'm under the impression that the charge cycle for these LiFePO4 batteries should go from constant current, to constant voltage, and then the current flow should stop until a top up is required. However, it seems that I never reach this last phase... Is this normal behavior or have I perhaps entered the wrong battery charge parameters? I only have one battery and no PV.
August 25, 20232 yr 7 minutes ago, Dazzard said: The electronics on the battery itself also needs power to run. The 50W seems a bit high, mine uses around 20W. The Sunsynk style inverters do lie a bit about the wattages they see on different inputs and outputs, so yes, the 50W sounds in the ballpark. Edited August 25, 20232 yr by HendrikBigChief
August 25, 20232 yr FWIW as a comparison. My batteries (2x 5.1kwh SS) coupled with 8kw SS are currently on 100% (I had disabled timer last night, rainy day forecast in cape town).
August 28, 20232 yr Author Even the flow graph doesn’t seem to make sense. I should be pulling 248 W from the grid? So the consensus is that the inverter does not correctly measure how much power the battery is pulling? Can I trust the load measurements? Edited August 28, 20232 yr by Dazzard
August 28, 20232 yr 1 hour ago, Dazzard said: Even the flow graph doesn’t seem to make sense. I should be pulling 248 W from the grid? So the consensus is that the inverter does not correctly measure how much power the battery is pulling? Can I trust the load measurements? Next to Power Flow at the top, Sunsynk should put in brakets: (LIES) When my inverter says 0 from grid, it is actually pulling 180W, that is how badly it lies.
August 28, 20232 yr 2 hours ago, HendrikBigChief said: When my inverter says 0 from grid, it is actually pulling 180W, that is how badly it lies. How did you measure your 180W?
August 28, 20232 yr 6 minutes ago, P1000 said: How did you measure your 180W? I have an external probe as part of an effergy engage.
August 28, 20232 yr 15 minutes ago, HendrikBigChief said: I have an external probe as part of an effergy engage. Efergy does not measure watts, it measures apparent power. Your inverter may only generate unity power factor when grid connected, so unless you only have resistive loads, the efergy will measure something when the actual power is 0W.
August 28, 20232 yr 1 minute ago, P1000 said: Efergy does not measure watts, it measures apparent power. Your inverter may only generate unity power factor when grid connected, so unless you only have resistive loads, the efergy will measure something when the actual power is 0W. The effergy 100% matches what my prepaid meter also says...
August 28, 20232 yr 2 minutes ago, HendrikBigChief said: The effergy 100% matches what my prepaid meter also says... That is worrying. Your prepaid should be configured to only bill for real power (assuming you are a residential user). But it is definitely capable of measuring apparent power, and most of them can be configured to bill on either. With only a current clamp like the efergy, you cannot measure real power.
August 28, 20232 yr 2 hours ago, P1000 said: That is worrying. Your prepaid should be configured to only bill for real power (assuming you are a residential user). But it is definitely capable of measuring apparent power, and most of them can be configured to bill on either. With only a current clamp like the efergy, you cannot measure real power. But as I said, when the inverter says 0 W from grid, the efergy picks up 180W. The 180W is what the Inverter itself uses. That 180W is not reactive power. There is no motor running, it is plainly the inverter. Everything else is switched off in my house.
August 29, 20232 yr 13 hours ago, HendrikBigChief said: But as I said, when the inverter says 0 W from grid, the efergy picks up 180W. The 180W is what the Inverter itself uses. That 180W is not reactive power. There is no motor running, it is plainly the inverter. Everything else is switched off in my house. That doesn't sound very scientific, the sunsynk itself is also not a resistive load. As much as I like bashing random brands, you are going to need stronger proof of what you are claiming. Edited August 29, 20232 yr by P1000
August 29, 20232 yr 1 hour ago, P1000 said: That doesn't sound very scientific, the sunsynk itself is also not a resistive load. As much as I like bashing random brands, you are going to need stronger proof of what you are claiming. We have raised the point that inverters do have a lot of reactive power due to all the inductors used at convertor stages. I found these using a CT are quite accurate against my munic meter. Also a plus is even with a 20m distance to the CT. Mine is now in use for 5yrs. For VA and PF one needs to calculate it. I also like the 3 digit display for accumulated power used and easy to reset to zero.
August 29, 20232 yr 4 hours ago, P1000 said: That doesn't sound very scientific, the sunsynk itself is also not a resistive load. As much as I like bashing random brands, you are going to need stronger proof of what you are claiming. Do you work for Sunsynk/Deye? Surely, if the Inverter reports 0W from grid, but my meter says 180W, then there is an issue. The inverter should measure actual power. Edited August 29, 20232 yr by HendrikBigChief
August 29, 20232 yr 10 minutes ago, HendrikBigChief said: Do you work for Sunsynk/Deye? Surely, if the Inverter reports 0W from grid, but my meter says 180W, then there is an issue. In my limited working with inverters they tend to measure the load power used which excludes own consumption. This will vary from make to make. I measure own consumption as the difference between input and output. The same for the PV side
August 29, 20232 yr 17 minutes ago, Scorp007 said: In my limited working with inverters they tend to measure the load power used which excludes own consumption. This will vary from make to make. I measure own consumption as the difference between input and output. The same for the PV side On my two 5 KVA 5000 ES Growatt inverters I can see a consumption of +_ 1.8 Amps. So 0.8 Amps per inverter. See attached dashboard. Edited August 29, 20232 yr by Antonio de Sa
August 29, 20232 yr 4 minutes ago, Antonio de Sa said: On my two 5 KVA 5000 ES Growatt inverters I can see a consumption of +_ 1.8 Amps. So -8 Amps per inverter. See attached dashboard. 8A per inverter but 1.8A for both?
August 29, 20232 yr 4 minutes ago, Scorp007 said: 8A per inverter but 1.8A for both? @Scorp007 Apologies 0,8 Amps per inverter, thick fingers. LOL
August 29, 20232 yr 42 minutes ago, HendrikBigChief said: but my meter says 180W, then there is an issue. We have already established that your meter does not measure what you think it measures... And no, I don't even own a Sunsynk.
August 29, 20232 yr 47 minutes ago, Antonio de Sa said: On my two 5 KVA 5000 ES Growatt inverters I can see a consumption of +_ 1.8 Amps. So 0.8 Amps per inverter. See attached dashboard. Sorry could not see the values on a small screen.
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