Solark 15k setup question

[Sdot1225]

Good day all, new guy here. I've purchased a Solark 15k and 2 big battery Kong Elite batteries (19kwh each). I do not have solar at the moment... but im looking for setup advice. Im on a time of use plan, and plan on using the Solark to reduce my energy bill by using 30KWH each day to offset my electrical cost. I have questions about the setup... would love anyone with experience to chime in. I also have a whole home generac 22kw generator as well. My current electric plan is .35 per KWH (This number includes all fees...etc) ,from 9am to 9pm and free after that time. My goal is to use the solark to charge my batteries (from the grid) after 9pm to full and at 9am use the batteries down to 20% or 9pm which ever comes first, before pulling from the grid again. I would like this process to occur daily, should i lose power from the grid...use the generator to charge the batteries once at 20% and keep things going until grid power is restored. How easy/difficult is it to program this type of setup...also is there anything that i may be overlooking or not understanding? Thanks for you help in advance.

 

[DThames]

I am at work and can't spend time on details. Sol-Ark has a Youtube channel and has several videos that go into configuration. They do have setups for this type of load planning. It is on the Grid Setup tab in the menu. Look for those videos.

 

[Sdot1225]

I am at work and can't spend time on details. Sol-Ark has a Youtube channel and has several videos that go into configuration. They do have setups for this type of load planning. It is on the Grid Setup tab in the menu. Look for those videos.

Thanks very much for the reply. Do you have a link to any of the videos? I've been to the youtube page and didnt see anything i needed... i could have very easily overlooked it however.

 

[629658]

Limited to home mode. Set your TOU slot 1 00:00 grid charge 100%. Slot 2 0900 no grid charge. Slot 3 1200 no grid charge, Slot 4 1500 no grid charge, Slot 5 1900 no grid charge. Slot 6 2100 grid charge 100%.

 

[629658]

Here is where the magic happens

 

[Sdot1225]

Hey guys, finally have everything setup and it works beautifully. The only issue im running into are the batteries dont discharge equally!? Not sure what i if i need to do anything or overtime will it correct itself?

 

[629658]

Hey guys, finally have everything setup and it works beautifully. The only issue im running into are the batteries dont discharge equally!? Not sure what i if i need to do anything or overtime will it correct itself?

Mine do not always but they are usually close within 10%. Voltages are all the same. Make sure your cables are all equal length. Some to be expected as each battery cable would need to be equal resistance to see absolute equal values which is difficult to achieve. So we just get as close as we can.

 

[Sdot1225]

Mine do not always but they are usually close within 10%. Voltages are all the same. Make sure your cables are all equal length. Some to be expected as each battery cable would need to be equal resistance to see absolute equal values which is difficult to achieve. So we just get as close as we can.

No dice for me... im using the same anderson cables..

I have two identical batteries that was installed at the sametime. One was connected to the busbar and from the busbar to battery terminal one on the inverter (Solark 15k) and the other battery was plugged directly into terminal two on the inverter. I noticed the batteries were both discharging however at different amperages (Example: Load 60 amps, one battery would take 40 amps and the other 20 amps), i was told by the battery manufacture this is not good for the battery and to minimize this, i should connect both batteries to busbar and from the busbar to the inverter.

So i connected both batteries to the busbar and battery terminal one. In theory the inverter should see one large battery (parallel) rather than two smaller batteries. Problem is now only one battery discharges unless i turn off discharging on that battery, which triggers the idle battery to discharge.... however they never discharge at the same time.

I called the battery manufacture again, i was told this is based on load and a larger load would trigger both batteries. So i turned on my central air conditioner and still only one battery discharged.... He also mentioned as one battery voltage dropped the battery with the higher voltage would engage.... didn't happen, i have one battery at 12% and the other 40% (I manually engage/disengage them to try to equal out...without success). Could it be the busbar? Although i know it works because each battery does work, just not at the sametime.

 

[629658]

So i dont know what brand battery you have but it sounds like it may be a BMS issue the way you have it wired. This is what I did and I have had zero issues since September when I installed. You need 2 busbars a positive and a negative. All batteries separately need an equal length positive and negative connected to the busbar. From your inverter you bring out 2 negative and 2 positive equal length cables and attach them one on each end of the positive and negative busbars. I used 4/0 cable on everything with pressed on ends. Dont mind the cable colors I had a piece of red and that wire is like buying gold so I used it.

 

[willshakespeare]

Good day all, new guy here. I've purchased a Solark 15k and 2 big battery Kong Elite batteries (19kwh each). I do not have solar at the moment... but im looking for setup advice. Im on a time of use plan, and plan on using the Solark to reduce my energy bill by using 30KWH each day to offset my electrical cost. I have questions about the setup... would love anyone with experience to chime in. I also have a whole home generac 22kw generator as well. My current electric plan is .35 per KWH (This number includes all fees...etc) ,from 9am to 9pm and free after that time. My goal is to use the solark to charge my batteries (from the grid) after 9pm to full and at 9am use the batteries down to 20% or 9pm which ever comes first, before pulling from the grid again. I would like this process to occur daily, should i lose power from the grid...use the generator to charge the batteries once at 20% and keep things going until grid power is restored. How easy/difficult is it to program this type of setup...also is there anything that i may be overlooking or not understanding? Thanks for you help in advance.

Is your setup still working? Any issues with the electricity providers for using time off use and batteries?
What loads are you using with the Solark 15?

Thanks much for your response