I have very recently upgraded my Off grid solar system battery.
For a year and half I was using Growatt 5000ES with 4 x 200 Ah VRLA batteries (48v) and 4KW of panels. It worked fine but I wanted more capacity.
So, I decided to upgrade the batteries to Felicity 10.KW LPF battery.
After connecting new battery to the inverter I have set in program 5 to "LI" battery type, but BMS communication did not work.
I then remembered that company that sold me the battery said that battery is compatible with Growatt 5000ES and it should use "user defined" option on inverter.
The moment I changed program 5 to "USE" (user defined) it started charging.
After specifying the "user defined" for battery type it started charging the LPF battery from 40% (that is how it was shipped) to 89%. And, then next day the battery did not charge anymore, it started slowly draining. Same thing happens next day. Now, inverter shows that battery voltage is 53.2V and SOC is 100 % yet, felicity solar app shows that battery is at 67%. It has been 3 days and battery is not charging, although when I put the load (boiler, 1200W) inverter directly runs the load off solar energy, it does not pull any energy from the battery to run the boiler and a small draw of some 20 to 40W is constantly there no matter how much extra energy solar panels produce. That is confusing to me as with VRLA batteries this draw did not exist when there is excess solar energy.
I am thinking that since settings in inverter for program 5 battery type "use" (user defined) were specified then correct battery charge voltage and low DC cut-off should be set up in program 19, 20 and 21 of the inverter.
here are the battery settings from solar assistant app:
User
Charger source priority
Solar first
Back to battery voltage
54 V
To grid battery voltage
46 V
Shutdown battery voltage
44 V
Battery float charge voltage
54 V
Battery absorption charge voltage
56.4 V
Max charge current
60 A
Max grid charge current
30 A
Felicity battery manual says that its voltage range is from 44.8V to 57.6V and its nominal voltage is 51.2V.
Any ideas what settings should I change to keep the battery charged?
thanks for any input!
For a year and half I was using Growatt 5000ES with 4 x 200 Ah VRLA batteries (48v) and 4KW of panels. It worked fine but I wanted more capacity.
So, I decided to upgrade the batteries to Felicity 10.KW LPF battery.
After connecting new battery to the inverter I have set in program 5 to "LI" battery type, but BMS communication did not work.
I then remembered that company that sold me the battery said that battery is compatible with Growatt 5000ES and it should use "user defined" option on inverter.
The moment I changed program 5 to "USE" (user defined) it started charging.
After specifying the "user defined" for battery type it started charging the LPF battery from 40% (that is how it was shipped) to 89%. And, then next day the battery did not charge anymore, it started slowly draining. Same thing happens next day. Now, inverter shows that battery voltage is 53.2V and SOC is 100 % yet, felicity solar app shows that battery is at 67%. It has been 3 days and battery is not charging, although when I put the load (boiler, 1200W) inverter directly runs the load off solar energy, it does not pull any energy from the battery to run the boiler and a small draw of some 20 to 40W is constantly there no matter how much extra energy solar panels produce. That is confusing to me as with VRLA batteries this draw did not exist when there is excess solar energy.
I am thinking that since settings in inverter for program 5 battery type "use" (user defined) were specified then correct battery charge voltage and low DC cut-off should be set up in program 19, 20 and 21 of the inverter.
here are the battery settings from solar assistant app:
Battery settings
Battery typeUser
Charger source priority
Solar first
Back to battery voltage
54 V
To grid battery voltage
46 V
Shutdown battery voltage
44 V
Battery float charge voltage
54 V
Battery absorption charge voltage
56.4 V
Max charge current
60 A
Max grid charge current
30 A
Felicity battery manual says that its voltage range is from 44.8V to 57.6V and its nominal voltage is 51.2V.
Any ideas what settings should I change to keep the battery charged?
thanks for any input!
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