SnoopySniper

Hi do you perhaps know which settings were incorrect? ”Turns out a couple of settings I had input were not right.” Greetings Albert

Good Day All Some advice will be appreciated. I am aware the my Axpert King(Basically same as Mecer) inverter does not communicate with the batteries. Thus the SOC shown on the inverter and the actual SOC of the batteries are not the same. I've got 3 Narada batteries and the have 4 SOC light indicators on the light 1 = 0-25% light 2 = 25-50% light 3 =50-75% light 4 = 75-100% we have had non stop cloud for the last 3 day and i've noticed the following. According to the inverter the battery voltage drops to 45V and the system then switches over to ESKOM, although there are still 3 lights illumined on the batteries meaning minimum 50% SOC available on the batteries. So here is the question: Except for getting the official narada comms cable to communicate with the ICC on the Raspberry PI. is there another way to force the inverter to use the use battery power that is still available? Hope this explanation makes sence. Looking forward to the replies. Greetings Albert

Good Day All Some advice will be appreciated. I am aware the my Axpert King inverter does not communicate with the batteries. Thus the SOC shown on the inverter and the actual SOC of the batteries are not the same. I've got 3 Narada batteries and the have 4 SOC light indicators on the light 1 = 0-25% light 2 = 25-50% light 3 =50-75% light 4 = 75-100% we have had non stop cloud for the last 3 day and i've noticed the following. According to the inverter the battery voltage drops to 45V and the system then switches over to ESKOM, although there are still 3 lights illumined on the batteries meaning minimum 50% SOC available on the batteries. So here is the question: Except for getting the official narada comms cable to communicate with the ICC on the Raspberry PI. is there another way to force the inverter to use the use battery power that is still available? Hope this explanation makes sence. Looking forward to the replies. Greetings Albert

Just some feedback. My 3 Huawei’s was replaced by 3 Neradas. I have not had any pv drop or disconnect issue since Neradas were installed. Even at varying load during the day the pv supply stays constant. Couldn't be happier. on a normal day batteries are fully charged by 14:00. Cheers

You are correct with the 50 amp issue. what however happened with me the battery kept on supplying even at 70 amps. it did however cause the pv's to dip and sometimes to freeze. but then again even at 25 amp draw the pv's would freeze. Just dont think those batteries were made for household functions with constant load changes. cheers

Hi Sorry for the delayed reply. I have 15 x 330 watt panels. The are connected via 3 lines to the inverter. 3 in series on their own. The the remaining 12 on two lines with 6 panels per line. In parallel to keep the voltage the same as 3 in series. If that makes sense. I dont think the panels are super efficiently placed due to roof space. 12 north 3 east 3 west. I currently on a good day get max 3100watt from the pannels at about 11-1 o clock. I have a axert King Inverter (pretty much same performance as the one you have) I have 3 x Narada Lithium batteries.48 v 100ah each connected in parallel. Ive got a 400 square meter house. We are five occupants and i run everything of the system except the geyser and the oven. As you'll see in the previous post i only recently got the Narada batteries and the performance changed dramatically. The previous HUAWEI batteries causes constant PV dips And PV freezes. After about two weeks of monitoring it seems that with my setup i can easily get about 24 unit of electricity a day. The panels are more than sufficient to run the house during the day and the batteries easily take the house through the night. I do not have a BMS but looking at the indicators on the battery I’m guessing the batteries run down to about 30-40% capacity left before the charging starts in the morning again. Batteries a fully charged by about two o’clock. Hope the info helps Greetings Albert

Good Morning Just some feedback. After a lengthy struggle, my previous Huawei batteries was replaced by the Installer. They were replaced by Narada 100ah 48v 4.8Kw Lithium Ion. (3 in parallel) I was informed by the supplier and installer that my PV dip and PV freeze will not happen with these batteries. It has only been two days but I can report the following: I have not experienced a single PV dip during the last two days. Even when using the a 2200W Iron the PV supply stays constant. Doesn't matter what load I introduce (3800W max total) the PV supply does not dip and stays constant. This is obviously a massive benefit in terms of PV supply during the day. Efficiency has increased dramatically. It is to early to comment on the PV freeze but will definitely provide feedback. I hope my excitement is not short lived but the initial results are really promising. Greetings Albert Second Post Good Day Well this will be my last input wrt the matter unless something change Its been one week now with thew new Batteries. To date I have not experienced one PV dip or Freeze. This was with various loads being introduced from 200 Watt to 3500 Watt. Because of the constant PV supply all 3 batteries are now fully charged by 2 in the afternoons. It might be premature but the constant PV dips and Freezes has not occurred since the new batteries. All components stayed the same except the batteries. During all discussions the focus wrt PV Freeze and dips has mostly been towards the inverters. I wonder if the focus was wrong or if I was just lucky that this issue seems to be resolved. It should be a relatively easy test and would expect installers to trouble shoot this. Cheers Guys Have a great day

Good Day Well this will be my last input wrt the matter unless something change Its been one week now with thew new Batteries. To date I have not experienced one PV dip or Freeze. This was with various loads being introduced from 200 Watt to 3500 Watt. Because of the constant PV supply all 3 batteries are now fully charged by 2 in the afternoons. It might be premature but the constant PV dips and Freezes has not occurred since the new batteries. All components stayed the same except the batteries. During all discussions the focus wrt PV Freeze and dips has mostly been towards the inverters. I wonder if the focus was wrong or if I was just lucky that this issue seems to be resolved. It should be a relatively easy test and would expect installers to trouble shoot this. Cheers Guys Have a great day

I also found this low but I spoke to the supplier and he explained that they have found these values work the best after extensive use in the field. I had it at 54V as per spec sheet but that did not work the inverter was not able to maintain the float charge, kept on charging at 20amp then sees 100% SOC would switch of and battery would take the load and start the discharge then the charge would kick in again at 20Amps and this would repeat itself in quick succession. The current settings work perfect. as the battery indication reaches full you can see the charge slowly drops of to eventually 1 or 2Amp to maintain the battery full level. Greetings Albert

Hi These were the settings received from the supplier. Basically 51.5 and 51.6. Forget about the SOC on the inverter/watchpower With those settings the physical charge status lights on the batteries shows full After day 3 and still no PV dips. By 1330 my batteries are fully charged ready to work throughout the night. So far very happy.

Good Morning Just some feedback. After a lengthy struggle, my previous Huawei batteries was replaced by the Installer. They were replaced by Narada 100ah 48v 4.8Kw Lithium Ion. (3 in parallel) I was informed by the supplier and installer that my PV dip and PV freeze will not happen with these batteries. It has only been two days but I can report the following: I have not experienced a single PV dip during the last two days. Even when using the a 2200W Iron the PV supply stays constant. Doesn't matter what load I introduce (3800W max total) the PV supply does not dip and stays constant. This is obviously a massive benefit in terms of PV supply during the day. Efficiency has increased dramatically. It is to early to comment on the PV freeze but will definitely provide feedback. I hope my excitement is not short lived but the initial results are really promising. Greetings Albert

Miracles apparently still happen. After leaving the Pi of throughout the night and re-connecting it this morning ICC sees the inverter (axpert King). Everything setup now. must say the software is super compared to watchpower. Cheers

Good Day Guys I managed to connect my Axpert to the laptop running Watchpower using the network port on the inverter and usb on the laptop. This was with a serial converter cable. I bought the ICC software with the Raspberry pi. My previous cable does not seem to work with the pi. The micro usb connector on the inverter to usb on the pi has also been unsuccessful to date. Ive read the micro usb cables can be tricky to find the right one To maybe prevent serious further frustration is there any tips/tricks to connect the Axpert to the Raspberry pi via the micro usb port on the inverter any input will be appreciated Greetings Albert

Good Day Guys I managed to connect my Axpert to the laptop running Watchpower using the network port on the inverter and usb on the laptop. This was with a serial converter cable. I bought the ICC software with the Raspberry pi. My previous cable does not seem to work with the pi. The micro usb connector on the inverter to usb on the pi has also been unsuccessful to date. Ive read the micro usb cables can be tricky to find the right one To maybe prevent serious further frustration is there any tips/tricks to connect the Axpert to the Raspberry pi via the micro usb port on the inverter any input will be appreciated Greetings Albert

Great observation Marc. Curious to see if other members with different batteries experience the same. Greetings